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19 commits

Author SHA1 Message Date
Qyriad
c6f03c6e59 state commit 2024-06-21 20:25:24 -06:00
Qyriad
cc005058a9 state commit
Change-Id: I43a2bb6f771c67fe819cf38c272bc338fa4cb048
2024-06-21 20:25:03 -06:00
Qyriad
e30b15ca93 progress bar: factor out activity ancestor precedence logic
Change-Id: I2bc736cd176f0147477dfb94dd48a4c8a1f8ec77
2024-06-20 18:18:12 -06:00
Qyriad
5623e759ec doc-comment Fields for Activity and Result types
The ones we were able to figure out, at least.

Change-Id: I697f4f3942e35a7adf1b2a6cc28b3168d1de111c
2024-06-20 18:00:25 -06:00
Qyriad
91d8d0e58e mildly refactor the renderActivity if hell-chain
This is primarily for readability, but iwrc chaining std::string's
operator+ is also pretty scuffed performance-wise, and this was doing a
lot of operator+ chainging.

Change-Id: I9f25235df153eb2bbb491f1ff7ebbeed9a8ec985
2024-06-20 13:56:53 -06:00
Qyriad
57932037a8 if hell chain 2024-06-20 13:44:01 -06:00
Qyriad
9580b6846e mildly refactor the formatting in the renderActivity hell if-chain
Change-Id: I9f25235df153eb2bbb491f1ff7ebbeed9a8ec985
2024-06-19 22:24:12 -06:00
Qyriad
90b377284c drop the state commit 2024-06-19 22:14:58 -06:00
Qyriad
7e6542d511 add a basic libmain test for the progress bar rendering
Hooray for leaky abstraction allowing us to test this particular part of
the render pipeline.

Change-Id: Ie0f251ff874f63324e6a9c6388b84ec6507eeae2
2024-06-19 22:14:51 -06:00
Qyriad
c8fc26990e use a type alias for ProgressBar's chosen time point type
Change-Id: I621a455b1daba806fc498958aee7931fbfc55445
2024-06-19 22:14:51 -06:00
Qyriad
61ac408a70 extract ProgressBar declaration into its header file
Change-Id: Ica9e2ec41d99eaa196a0d535501edf45c589b2b6
2024-06-19 22:14:51 -06:00
Qyriad
3d80ff4711 okay, probably good 2024-06-19 22:14:16 -06:00
Qyriad
252192bb43 add a basic libmain test for the progress bar rendering
Hooray for leaky abstraction allowing us to test this particular part of
the render pipeline.

Change-Id: Ie0f251ff874f63324e6a9c6388b84ec6507eeae2
2024-06-19 22:12:24 -06:00
Qyriad
c93129761d use a type alias for ProgressBar's chosen time point type
Change-Id: I621a455b1daba806fc498958aee7931fbfc55445
2024-06-19 22:11:25 -06:00
Qyriad
51336e3bf4 extract ProgressBar declaration into its header file
Change-Id: Ica9e2ec41d99eaa196a0d535501edf45c589b2b6
2024-06-19 20:56:28 -06:00
Qyriad
6d4e54e07c Revert "state commit"
This reverts commit 619cfa9fec.
2024-06-19 20:42:50 -06:00
Qyriad
6e9508b389 init 2024-06-19 20:42:45 -06:00
Qyriad
619cfa9fec state commit
Change-Id: I5835e6417d425dbda67762040802542169d2ce17
2024-06-19 20:42:43 -06:00
Qyriad
706f482216 slight cleanup to ProgressBar::getStatus()
Binaries were identical before and after this commit on our machine

Change-Id: I6f8bfbe3298d6c5f43d5702c7a1e05cb180226cc
2024-06-19 18:51:23 -06:00
1885 changed files with 1 additions and 160749 deletions

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@ -1,50 +0,0 @@
---
BasedOnStyle: LLVM
AccessModifierOffset: -4
AlignAfterOpenBracket: BlockIndent
AlignEscapedNewlines: Left
AlignOperands: DontAlign
AllowShortBlocksOnASingleLine: Always
AllowShortFunctionsOnASingleLine: Empty
AllowShortIfStatementsOnASingleLine: WithoutElse
AlwaysBreakBeforeMultilineStrings: true
AlwaysBreakTemplateDeclarations: Yes
BinPackArguments: false
BinPackParameters: false
BitFieldColonSpacing: None
BraceWrapping:
AfterCaseLabel: false
AfterClass: true
AfterControlStatement: MultiLine
AfterEnum: false
AfterFunction: true
AfterNamespace: false
AfterObjCDeclaration: false
AfterStruct: true
AfterUnion: true
AfterExternBlock: false
BeforeCatch: false
BeforeElse: false
BeforeLambdaBody: false
BeforeWhile: false
IndentBraces: false
SplitEmptyFunction: true
SplitEmptyRecord: false
SplitEmptyNamespace: true
BreakAfterAttributes: Always
BreakBeforeBinaryOperators: NonAssignment
BreakBeforeBraces: Custom
BreakConstructorInitializers: BeforeComma
ColumnLimit: 100
EmptyLineAfterAccessModifier: Leave
EmptyLineBeforeAccessModifier: Leave
FixNamespaceComments: false
IndentWidth: 4
InsertBraces: true
InsertTrailingCommas: Wrapped
LambdaBodyIndentation: Signature
PackConstructorInitializers: CurrentLine
PointerAlignment: Middle
SortIncludes: Never
SpaceAfterCStyleCast: true
SpaceAfterTemplateKeyword: false

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@ -1,35 +0,0 @@
UseColor: true
Checks:
- -*
- bugprone-*
# too many warnings
- -bugprone-assignment-in-if-condition
# too many warnings
- -bugprone-narrowing-conversions
# kind of nonsense
- -bugprone-easily-swappable-parameters
# too many warnings for now
- -bugprone-implicit-widening-of-multiplication-result
# Lix's exception handling is Questionable
- -bugprone-empty-catch
# many warnings
- -bugprone-unchecked-optional-access
# many warnings, seems like a questionable lint
- -bugprone-branch-clone
# all thrown exceptions must derive from std::exception
- hicpp-exception-baseclass
# capturing async lambdas are dangerous
- cppcoreguidelines-avoid-capturing-lambda-coroutines
# crimes must be appropriately declared as crimes
- cppcoreguidelines-pro-type-cstyle-cast
- lix-*
# This can not yet be applied to Lix itself since we need to do source
# reorganization so that lix/ include paths work.
- -lix-fixincludes
# This lint is included as an example, but the lib function it replaces is
# already gone.
- -lix-hasprefixsuffix
CheckOptions:
bugprone-reserved-identifier.AllowedIdentifiers: '__asan_default_options'

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@ -1,18 +0,0 @@
((c++-mode . (
(c-file-style . "k&r")
(c-basic-offset . 4)
(c-block-comment-prefix . " ")
(indent-tabs-mode . nil)
(tab-width . 4)
(show-trailing-whitespace . t)
(indicate-empty-lines . t)
(eval . (c-set-offset 'innamespace 0))
(eval . (c-set-offset 'defun-open 0))
(eval . (c-set-offset 'inline-open 0))
(eval . (c-set-offset 'arglist-intro '+))
(eval . (c-set-offset 'arglist-cont 0))
(eval . (c-set-offset 'arglist-cont-nonempty '+))
(eval . (c-set-offset 'substatement-open 0))
(eval . (c-set-offset 'access-label '-))
(eval . (c-set-offset 'inlambda 0))
)))

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@ -1,31 +0,0 @@
# EditorConfig configuration for nix
# http://EditorConfig.org
# Top-most EditorConfig file
root = true
# Unix-style newlines with a newline ending every file, utf-8 charset
[*]
end_of_line = lf
insert_final_newline = true
trim_trailing_whitespace = true
charset = utf-8
# Match nix files, set indent to spaces with width of two
[*.nix]
indent_style = space
indent_size = 2
# Match c++/shell/perl, set indent to spaces with width of four
[*.{hpp,cc,hh,sh,pl}]
indent_style = space
indent_size = 4
# Match diffs, avoid to trim trailing whitespace
[*.{diff,patch}]
trim_trailing_whitespace = false
[*.md]
indent_style = space
indent_size = 2
max_line_length = 0

5
.envrc
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@ -1,5 +0,0 @@
# shellcheck shell=bash
source_env_if_exists .envrc.local
# Use native-clangStdenvPackages to get clangd by default.
use flake ".#${LIX_SHELL_VARIANT:-native-clangStdenvPackages}" "${LIX_SHELL_EXTRA_ARGS[@]}"
export GTEST_BRIEF=1

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@ -1,32 +0,0 @@
---
name: Bug report
about: Create a report to help us improve
title: ''
labels: bug
assignees: ''
---
## Describe the bug
A clear and concise description of what the bug is.
If you have a problem with a specific package or NixOS,
you probably want to file an issue at https://github.com/NixOS/nixpkgs/issues.
## Steps To Reproduce
1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error
## Expected behavior
A clear and concise description of what you expected to happen.
## `nix --version` output
## Additional context
Add any other context about the problem here.

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@ -1,24 +0,0 @@
---
name: Feature request
about: Suggest an idea for this project
title: ''
labels: feature
assignees: ''
---
## Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
## Describe the solution you'd like
A clear and concise description of what you want to happen.
## Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
## Additional context
Add any other context or screenshots about the feature request here.

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@ -1,32 +0,0 @@
---
name: Installer issue
about: Report problems with installation
title: ''
labels: installer
assignees: ''
---
## Platform
<!-- select the platform on which you tried to install Lix -->
- [ ] Linux: <!-- state your distribution, e.g. Arch Linux, Ubuntu, ... -->
- [ ] macOS
- [ ] WSL
## Additional information
<!-- state special circumstances on your system or additional steps you have taken prior to installation -->
## Output
<details><summary>Output</summary>
```log
<!-- paste console output here and remove this comment -->
```
</details>

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@ -1,28 +0,0 @@
---
name: Missing or incorrect documentation
about: Help us improve the reference manual
title: ''
labels: documentation
assignees: ''
---
## Problem
<!-- describe your problem -->
## Proposal
<!-- propose a solution -->
## Checklist
<!-- make sure this issue is not redundant or obsolete -->
- [ ] checked [latest Lix manual] \([source]\)
- [ ] checked [documentation issues] and [recent documentation changes] for possible duplicates
[latest Nix manual]: https://docs.lix.systems/manual/lix/nightly
[source]: https://git.lix.systems/lix-project/lix/src/main/doc/manual/src
[documentation issues]: https://git.lix.systems/lix-project/lix/issues?labels=151&state=all
[recent documentation changes]: https://gerrit.lix.systems/q/p:lix+path:%22%5Edoc/manual/.*%22

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@ -1,11 +0,0 @@
# Motivation
<!-- Briefly explain what the change is about and why it is desirable. -->
# Context
<!-- Provide context. Reference open issues if available. -->
<!-- Non-trivial change: Briefly outline the implementation strategy. -->
<!-- Invasive change: Discuss alternative designs or approaches you considered. -->
<!-- Large change: Provide instructions to reviewers how to read the diff. -->

38
.gitignore vendored
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@ -1,38 +0,0 @@
outputs/
# GNU Global
GPATH
GRTAGS
GSYMS
GTAGS
# ccls
/.ccls-cache
# auto-generated compilation database
compile_commands.json
rust-project.json
result
result-*
.vscode/
.direnv/
# clangd and possibly more
.cache/
# Mac OS
.DS_Store
# ClangBuildAnalyzer output, see maintainers/buildtime_report.sh
buildtime.bin
.envrc.local
# We generate this with a Nix shell hook
/.pre-commit-config.yaml
/.nocontribmsg
/release
# Rust build files when using Cargo (not actually supported for building but it spews the files anyway)
/target/

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@ -1 +0,0 @@
This is a file used by the dev shell shellHook in package.nix to check that this is actually a Lix repo before installing git hooks. Its contents have no meaning.

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@ -1,53 +0,0 @@
# Contributing to Lix
Welcome and thank you for considering contributing to Lix! We're currently in a soft release phase, and your support means a lot to us.
To ensure a smooth and effective contribution process, here is a summary of our guidelines:
## Getting help?
If you have any question regarding getting started or reporting bugs, feel free
to reach out to us.
On Matrix, we have a space at `#space:lix.systems`, composed of:
- [`#discuss:lix.systems`](https://matrix.to/#/#discuss:lix.systems) for discussions on Lix.
- [`#dev:lix.systems`](https://matrix.to/#/#dev:lix.systems) for the development channel on Lix.
## Report a bug
- Check if your bug has already been reported in the [issue tracker](https://git.lix.systems/lix-project/lix/issues).
- If you can't find the bug or feature, please open a new issue.
We maintain a copy of the upstream Nix bugs. Their organisation can be read about [here](https://wiki.lix.systems/books/lix-contributors/page/bug-tracker-organisation).
## Report a security vulnerability
For security vulnerabilities, reach out by email at `security at lix dot systems`.
## Making changes to Lix
Before diving into making changes, we want to engage with you and your ideas.
We have a few policies in effect; please take the time to familiarize yourself:
- [Style guide on code](https://wiki.lix.systems/books/lix-contributors/page/code)
- [Freeze policy and recommended contributions](https://wiki.lix.systems/books/lix-contributors/page/freezes-and-recommended-contributions)
To avoid duplication of effort, it may be a good idea to check out the list of
[pending pull requests](https://gerrit.lix.systems/q/status:open+-is:wip) (or "change lists", as Gerrit calls them). Once you have
an idea of what you might want to do, we recommend dropping a message on our
Matrix to ensure your contribution fits with our current schedule and plans
When you're ready and your changes are ready to go:
- Submit your code.
- Submitting a GitHub PR [on our mirror](https://github.com/lix-project/lix) is totally ok if that's easier for you and your change is relatively small (300 lines or so).
We may ask you to resubmit it as a Gerrit CL if it is necessary for the change you're making.
- Our primary code review system is [our Gerrit instance](https://gerrit.lix.systems), where you can open a change list (CL).
If you're new to Gerrit, check out [our wiki page about Gerrit](https://wiki.lix.systems/books/lix-contributors/page/gerrit).
- Make sure to link any related issues.
- If needed, indicate that the change is 'work in progress'.
You can obtain an account on our platforms by clicking "Sign In with GitHub" on the sign-in page.

502
COPYING
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@ -1,502 +0,0 @@
GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
[This is the first released version of the Lesser GPL. It also counts
as the successor of the GNU Library Public License, version 2, hence
the version number 2.1.]
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
Licenses are intended to guarantee your freedom to share and change
free software--to make sure the software is free for all its users.
This license, the Lesser General Public License, applies to some
specially designated software packages--typically libraries--of the
Free Software Foundation and other authors who decide to use it. You
can use it too, but we suggest you first think carefully about whether
this license or the ordinary General Public License is the better
strategy to use in any particular case, based on the explanations below.
When we speak of free software, we are referring to freedom of use,
not price. Our General Public Licenses are designed to make sure that
you have the freedom to distribute copies of free software (and charge
for this service if you wish); that you receive source code or can get
it if you want it; that you can change the software and use pieces of
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To protect your rights, we need to make restrictions that forbid
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For example, if you distribute copies of the library, whether gratis
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NO WARRANTY
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Libraries
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possible use to the public, we recommend making it free software that
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convey the exclusion of warranty; and each file should have at least the
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<one line to give the library's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Also add information on how to contact you by electronic and paper mail.
You should also get your employer (if you work as a programmer) or your
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necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the
library `Frob' (a library for tweaking knobs) written by James Random Hacker.
<signature of Ty Coon>, 1 April 1990
Ty Coon, President of Vice
That's all there is to it!

79
Cargo.lock generated
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@ -1,79 +0,0 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3
[[package]]
name = "countme"
version = "3.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7704b5fdd17b18ae31c4c1da5a2e0305a2bf17b5249300a9ee9ed7b72114c636"
[[package]]
name = "dissimilar"
version = "1.0.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "59f8e79d1fbf76bdfbde321e902714bf6c49df88a7dda6fc682fc2979226962d"
[[package]]
name = "expect-test"
version = "1.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9e0be0a561335815e06dab7c62e50353134c796e7a6155402a64bcff66b6a5e0"
dependencies = [
"dissimilar",
"once_cell",
]
[[package]]
name = "hashbrown"
version = "0.14.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
[[package]]
name = "lix-doc"
version = "0.0.1"
dependencies = [
"expect-test",
"rnix",
"rowan",
]
[[package]]
name = "once_cell"
version = "1.19.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
[[package]]
name = "rnix"
version = "0.11.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bb35cedbeb70e0ccabef2a31bcff0aebd114f19566086300b8f42c725fc2cb5f"
dependencies = [
"rowan",
]
[[package]]
name = "rowan"
version = "0.15.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0a542b0253fa46e632d27a1dc5cf7b930de4df8659dc6e720b647fc72147ae3d"
dependencies = [
"countme",
"hashbrown",
"rustc-hash",
"text-size",
]
[[package]]
name = "rustc-hash"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
[[package]]
name = "text-size"
version = "1.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f18aa187839b2bdb1ad2fa35ead8c4c2976b64e4363c386d45ac0f7ee85c9233"

View file

@ -1,6 +0,0 @@
[workspace]
resolver = "2"
members = ["src/lix-doc"]
[workspace.package]
edition = "2021"

View file

@ -1,29 +0,0 @@
# Lix
**Lix** is an implementation of **Nix**, a powerful package management system for Linux and other Unix systems that makes package management reliable and reproducible.
Read more about us at https://lix.systems.
## Installation
On Linux and macOS the easiest way to install Lix is to run the following shell command
(as a user other than root):
```console
$ curl -sSf -L https://install.lix.systems/lix | sh -s -- install
```
For systems that **already have a Nix implementation installed**, such as NixOS systems, read our [install page](https://lix.systems/install)
## Building And Developing
See our [Hacking guide](https://git.lix.systems/lix-project/lix/src/branch/main/doc/manual/src/contributing/hacking.md) in our manual for instruction on how to to set up a development environment and build Lix from source.
## Additional Resources
- [Our wiki](https://wiki.lix.systems)
- [Matrix - #space:lix.systems](https://matrix.to/#/#space:lix.systems)
## License
Lix is released under [LGPL-2.1-or-later](./COPYING).

3
bench/.gitignore vendored
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@ -1,3 +0,0 @@
bench-*.json
bench-*.md
nixpkgs

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@ -1,91 +0,0 @@
# Benchmarking scripts for Lix
These are very much WIP, and have a few clumsy assumptions that we would
somewhat rather be fixed, but we have committed them to let others be able to
do benchmarking in the mean time.
## Benchmarking procedure
Build some Lixes you want to compare, by whichever means you wish.
Get a computer that is not busy and *strongly preferably* is bare-metal or at
least not a cloud VM (e.g. go make coffee when running benchmarks).
From the root of a Lix checkout, run `./bench/bench.sh resultlink-one
resultlink-two`, where `resultlink-one` and `resultlink-two` are the result
links from the builds you want to test (they can be any directory with bin/nix
in it, however).
To get the summary again, run `./bench/summarize.jq bench/bench-*.json`.
## Example results
(vim tip: `:r !bench/summarize.jq bench/bench-*.json` to dump it directly into
your editor)
```
result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6
c6fe19ccb59cac54b5b3f25e160870 hello
mean: 15.993s ± 0.081s
user: 13.321s | system: 1.865s
median: 15.994s
range: 15.829s ... 16.096s
relative: 1
result/bin/nix --extra-experimental-features 'nix-command flakes' search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6c6fe19cc
b59cac54b5b3f25e160870 hello
mean: 15.897s ± 0.075s
user: 13.248s | system: 1.843s
median: 15.88s
range: 15.807s ... 16.047s
relative: 0.994
---
result/bin/nix --extra-experimental-features 'nix-command flakes' eval -f bench/nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
mean: 0.4s ± 0.024s
user: 0.335s | system: 0.046s
median: 0.386s
range: 0.379s ... 0.43s
relative: 1
result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' eval -f bench/nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
mean: 0.404s ± 0.024s
user: 0.338s | system: 0.046s
median: 0.386s
range: 0.384s ... 0.436s
relative: 1.008
---
result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
mean: 5.838s ± 0.023s
user: 5.083s | system: 0.464s
median: 5.845s
range: 5.799s ... 5.867s
relative: 1
result/bin/nix --extra-experimental-features 'nix-command flakes' eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
mean: 5.788s ± 0.044s
user: 5.056s | system: 0.439s
median: 5.79s
range: 5.715s ... 5.876s
relative: 0.991
---
GC_INITIAL_HEAP_SIZE=10g result-asserts/bin/nix eval --extra-experimental-features 'nix-command flakes' --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
mean: 4.147s ± 0.021s
user: 3.457s | system: 0.487s
median: 4.147s
range: 4.123s ... 4.195s
relative: 1
GC_INITIAL_HEAP_SIZE=10g result/bin/nix eval --extra-experimental-features 'nix-command flakes' --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
mean: 4.149s ± 0.027s
user: 3.483s | system: 0.456s
median: 4.142s
range: 4.126s ... 4.215s
relative: 1
---
```

View file

@ -1,62 +0,0 @@
#!/usr/bin/env bash
set -euo pipefail
shopt -s inherit_errexit
scriptdir=$(cd "$(dirname -- "$0")" ; pwd -P)
cd "$scriptdir/.."
if [[ $# -lt 2 ]]; then
# FIXME(jade): it is a reasonable use case to want to run a benchmark run
# on just one build. However, since we are using hyperfine in comparison
# mode, we would have to combine the JSON ourselves to support that, which
# would probably be better done by writing a benchmarking script in
# not-bash.
echo "Fewer than two result dirs given, nothing to compare!" >&2
echo "Pass some directories (with names indicating which alternative they are) with bin/nix in them" >&2
echo "Usage: ./bench/bench.sh result-1 result-2 [result-3...]" >&2
exit 1
fi
_exit=""
trap "$_exit" EXIT
# XXX: yes this is very silly. flakes~!!
nix build --impure --expr '(builtins.getFlake "git+file:.").inputs.nixpkgs.outPath' -o bench/nixpkgs
export NIX_REMOTE="$(mktemp -d)"
_exit='rm -rfv "$NIX_REMOTE"; $_exit'
export NIX_PATH="nixpkgs=bench/nixpkgs:nixos-config=bench/configuration.nix"
builds=("$@")
flake_args="--extra-experimental-features 'nix-command flakes'"
hyperfineArgs=(
--parameter-list BUILD "$(IFS=,; echo "${builds[*]}")"
--warmup 2 --runs 10
)
declare -A cases
cases=(
[search]="{BUILD}/bin/nix $flake_args search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870 hello"
[rebuild]="{BUILD}/bin/nix $flake_args eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'"
[rebuild-lh]="GC_INITIAL_HEAP_SIZE=10g {BUILD}/bin/nix eval $flake_args --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'"
[parse]="{BUILD}/bin/nix $flake_args eval -f bench/nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix"
)
benches=(
rebuild
rebuild-lh
search
parse
)
for k in "${benches[@]}"; do
taskset -c 2,3 \
chrt -f 50 \
hyperfine "${hyperfineArgs[@]}" --export-json="bench/bench-${k}.json" --export-markdown="bench/bench-${k}.md" "${cases[$k]}"
done
echo "Benchmarks summary (from ./bench/summarize.jq bench/bench-*.json)"
bench/summarize.jq bench/*.json

View file

@ -1,325 +0,0 @@
{
config,
pkgs,
lib,
...
}:
{
boot = {
initrd = {
availableKernelModules = [
"xhci_pci"
"ahci"
];
kernelModules = [ "dm-snapshot" ];
luks.devices = {
croot = {
device = "/dev/sdb";
allowDiscards = true;
};
};
};
kernelModules = [ "kvm-intel" ];
kernelPackages = pkgs.linuxPackages_latest;
loader = {
systemd-boot.enable = true;
efi.canTouchEfiVariables = true;
};
};
hardware = {
enableRedistributableFirmware = true;
cpu.intel.updateMicrocode = true;
opengl.driSupport32Bit = true;
opengl.extraPackages = with pkgs; [
vaapiIntel
intel-media-driver
intel-compute-runtime
];
};
fileSystems = {
"/" = {
device = "/dev/sda2";
fsType = "xfs";
options = [ "noatime" ];
};
"/boot" = {
device = "/dev/sda1";
fsType = "vfat";
};
"/nas" = {
device = "nas:/";
fsType = "nfs4";
options = [
"ro"
"x-systemd.automount"
];
};
};
swapDevices = [ { device = "/dev/swap"; } ];
networking = {
useDHCP = false;
hostName = "host";
wireless = {
enable = true;
interfaces = [ "eth1" ];
};
interfaces = {
eth0.useDHCP = true;
eth1.useDHCP = true;
};
wg-quick.interfaces = {
wg0 = {
address = [ "2001:db8::1" ];
privateKeyFile = "/etc/secrets/wg0.key";
peers = [
{
publicKey = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
endpoint = "[2001:db8::2]:61021";
allowedIPs = [ "2001::db8:1::/64" ];
}
];
};
};
firewall.allowedUDPPorts = [ 4567 ];
};
i18n = {
defaultLocale = "en_US.UTF-8";
inputMethod.enabled = "ibus";
};
services = {
xserver = {
enable = true;
layout = "us";
xkbVariant = "altgr-intl";
xkbOptions = "ctrl:nocaps";
libinput.enable = true;
wacom.enable = true;
videoDrivers = [ "modesetting" ];
modules = [ pkgs.xf86_input_wacom ];
displayManager.sx.enable = true;
windowManager.i3.enable = true;
};
udev.extraHwdb = ''
# not like this mattered at all
# we're not running udev from here
'';
udev.extraRules = ''
# ACTION=="add", SUBSYSTEM=="input", ...
'';
};
sound.enable = true;
hardware.pulseaudio = {
enable = true;
package = pkgs.pulseaudioFull;
daemon.config = {
lock-memory = "yes";
realtime-scheduling = "yes";
rlimit-rtprio = "-1";
};
};
programs = {
light.enable = true;
wireshark = {
enable = true;
package = pkgs.wireshark-qt;
};
gnupg.agent = {
enable = true;
};
};
fonts.packages = with pkgs; [
font-awesome
noto-fonts
noto-fonts-cjk
noto-fonts-emoji
noto-fonts-extra
dejavu_fonts
powerline-fonts
source-code-pro
cantarell-fonts
];
users = {
mutableUsers = false;
users = {
user = {
isNormalUser = true;
group = "user";
extraGroups = [
"wheel"
"video"
"audio"
"dialout"
"users"
"kvm"
"wireshark"
];
password = "unimportant";
};
};
groups = {
user = { };
};
};
security = {
pam.loginLimits = [
{
domain = "@audio";
item = "memlock";
type = "-";
value = "unlimited";
}
{
domain = "@audio";
item = "rtprio";
type = "-";
value = "99";
}
{
domain = "@audio";
item = "nofile";
type = "soft";
value = "99999";
}
{
domain = "@audio";
item = "nofile";
type = "hard";
value = "99999";
}
];
sudo.extraRules = [
{
users = [ "user" ];
commands = [
{
command = "${pkgs.linuxPackages.cpupower}/bin/cpupower";
options = [ "NOPASSWD" ];
}
];
}
];
};
environment.systemPackages = with pkgs; [
a2jmidid
age
ardour
bemenu
blender
breeze-icons
breeze-qt5
bubblewrap
calf
claws-mail
darktable
duperemove
emacs
feh
file
firefox
fluidsynth
gnome3.adwaita-icon-theme
gnuplot
graphviz
helm
i3status-rust
inkscape
jack2
jq
krita
ldns
libqalculate
libreoffice
man-pages
nheko
nix-diff
nix-index
nix-output-monitor
open-music-kontrollers.patchmatrix
pamixer
pavucontrol
pciutils
picom
pwgen
redshift
ripgrep
rlwrap
silver-searcher
soundfont-fluid
whois
wol
xclip
xdot
xdotool
xorg.xkbcomp
yt-dlp
zathura
borgbackup
linuxPackages.cpupower
mtr
kitty
xf86_input_wacom
];
environment.pathsToLink = [ "/share/soundfonts" ];
systemd.user.services.run-python = {
after = [ "network-online.target" ];
script = ''
exec ${pkgs.python3}/bin/python
'';
serviceConfig = {
CapabilityBoundingSet = [ "" ];
KeyringMode = "private";
LockPersonality = true;
MemoryDenyWriteExecute = true;
NoNewPrivileges = true;
PrivateDevices = true;
PrivateTmp = true;
PrivateUsers = true;
ProcSubset = "pid";
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
ProtectProc = "invisible";
ProtectSystem = "strict";
RestrictAddressFamilies = "AF_INET AF_INET6";
RestrictNamespaces = true;
RestrictRealtime = true;
RestrictSUIDSGID = true;
SystemCallArchitectures = "native";
SystemCallFilter = [
"@system-service"
"~ @resources @privileged"
];
UMask = "077";
};
};
system.stateVersion = "23.11";
}

View file

@ -1,22 +0,0 @@
#!/usr/bin/env -S jq -Mrf
def round3:
. * 1000 | round | . / 1000
;
def stats($first):
[
" mean: \(.mean | round3)s ± \(.stddev | round3)s",
" user: \(.user | round3)s | system: \(.system | round3)s",
" median: \(.median | round3)s",
" range: \(.min | round3)s ... \(.max | round3)s",
" relative: \(.mean / $first.mean | round3)"
]
| join("\n")
;
def fmt($first):
"\(.command)\n" + (. | stats($first))
;
[.results | .[0] as $first | .[] | fmt($first)] | join("\n\n") | (. + "\n\n---\n")

View file

@ -1,38 +0,0 @@
#!/usr/bin/env nix-shell
#!nix-shell -i python3 -p python3 --pure
# To be used with `--trace-function-calls` and `flamegraph.pl`.
#
# For example:
#
# nix-instantiate --trace-function-calls '<nixpkgs>' -A hello 2> nix-function-calls.trace
# ./contrib/stack-collapse.py nix-function-calls.trace > nix-function-calls.folded
# nix-shell -p flamegraph --run "flamegraph.pl nix-function-calls.folded > nix-function-calls.svg"
import sys
from pprint import pprint
import fileinput
stack = []
timestack = []
for line in fileinput.input():
components = line.strip().split(" ", 2)
if components[0] != "function-trace":
continue
direction = components[1]
components = components[2].rsplit(" ", 2)
loc = components[0]
_at = components[1]
time = int(components[2])
if direction == "entered":
stack.append(loc)
timestack.append(time)
elif direction == "exited":
dur = time - timestack.pop()
vst = ";".join(stack)
print(f"{vst} {dur}")
stack.pop()

View file

@ -1,9 +0,0 @@
(import (
let
lock = builtins.fromJSON (builtins.readFile ./flake.lock);
in
fetchTarball {
url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
sha256 = lock.nodes.flake-compat.locked.narHash;
}
) { src = ./.; }).defaultNix

View file

@ -1,3 +0,0 @@
/doxygen.cfg
/html
/latex

View file

@ -1,99 +0,0 @@
# Doxyfile 1.9.5
# The PROJECT_NAME tag is a single word (or a sequence of words surrounded by
# double-quotes, unless you are using Doxywizard) that should identify the
# project for which the documentation is generated. This name is used in the
# title of most generated pages and in a few other places.
# The default value is: My Project.
PROJECT_NAME = "Nix"
# The PROJECT_NUMBER tag can be used to enter a project or revision number. This
# could be handy for archiving the generated documentation or if some version
# control system is used.
PROJECT_NUMBER = @PACKAGE_VERSION@
OUTPUT_DIRECTORY = @docdir@
# Using the PROJECT_BRIEF tag one can provide an optional one line description
# for a project that appears at the top of each page and should give viewer a
# quick idea about the purpose of the project. Keep the description short.
PROJECT_BRIEF = "Lix: A modern, delicious implementation of the Nix package manager; unstable internal interfaces"
# If the GENERATE_LATEX tag is set to YES, doxygen will generate LaTeX output.
# The default value is: YES.
GENERATE_LATEX = NO
# The INPUT tag is used to specify the files and/or directories that contain
# documented source files. You may enter file names like myfile.cpp or
# directories like /usr/src/myproject. Separate the files or directories with
# spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
# Note: If this tag is empty the current directory is searched.
# FIXME Make this list more maintainable somehow. We could maybe generate this
# in the Makefile, but we would need to change how `.in` files are preprocessed
# so they can expand variables despite configure variables.
INPUT = \
src/libcmd \
src/libexpr \
src/libexpr/flake \
tests/unit/libexpr \
tests/unit/libexpr/value \
tests/unit/libexpr/test \
tests/unit/libexpr/test/value \
src/libexpr/value \
src/libfetchers \
src/libmain \
src/libstore \
src/libstore/build \
src/libstore/builtins \
tests/unit/libstore \
tests/unit/libstore/test \
src/libutil \
tests/unit/libutil \
tests/unit/libutil/test \
src/nix \
src/nix-env \
src/nix-store
# If the MACRO_EXPANSION tag is set to YES, doxygen will expand all macro names
# in the source code. If set to NO, only conditional compilation will be
# performed. Macro expansion can be done in a controlled way by setting
# EXPAND_ONLY_PREDEF to YES.
# The default value is: NO.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
MACRO_EXPANSION = YES
# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES then
# the macro expansion is limited to the macros specified with the PREDEFINED and
# EXPAND_AS_DEFINED tags.
# The default value is: NO.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
EXPAND_ONLY_PREDEF = YES
# The INCLUDE_PATH tag can be used to specify one or more directories that
# contain include files that are not input files but should be processed by the
# preprocessor. Note that the INCLUDE_PATH is not recursive, so the setting of
# RECURSIVE has no effect here.
# This tag requires that the tag SEARCH_INCLUDES is set to YES.
INCLUDE_PATH = @RAPIDCHECK_HEADERS@
# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
# tag can be used to specify a list of macro names that should be expanded. The
# macro definition that is found in the sources will be used. Use the PREDEFINED
# tag if you want to use a different macro definition that overrules the
# definition found in the source code.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
EXPAND_AS_DEFINED = \
DECLARE_COMMON_SERIALISER \
DECLARE_WORKER_SERIALISER \
DECLARE_SERVE_SERIALISER \
LENGTH_PREFIXED_PROTO_HELPER

View file

@ -1,34 +0,0 @@
doxygen_cfg = configure_file(
input : 'doxygen.cfg.in',
output : 'doxygen.cfg',
configuration : {
'PACKAGE_VERSION': meson.project_version(),
'RAPIDCHECK_HEADERS': rapidcheck_meson.get_variable('includedir'),
'docdir' : meson.current_build_dir(),
},
)
internal_api_docs = custom_target(
'internal-api-docs',
command : [
bash,
# Meson can you please just give us a `workdir` argument to custom targets...
'-c',
# We have to prefix the doxygen_cfg path with the project build root
# because of the cd in front.
'cd @0@ && @1@ @2@/@INPUT0@'.format(
meson.project_source_root(),
doxygen.full_path(),
meson.project_build_root(),
),
],
input : [
doxygen_cfg,
],
output : 'html',
install : true,
install_dir : datadir / 'doc/nix/internal-api',
build_always_stale : true,
)
alias_target('internal-api-html', internal_api_docs)

View file

@ -1,31 +0,0 @@
"\\[\\]\\{#(?<anchor>[^\\}]+?)\\}" as $empty_anchor_regex |
"\\[(?<text>[^\\]]+?)\\]\\{#(?<anchor>[^\\}]+?)\\}" as $anchor_regex |
def transform_anchors_html:
. | gsub($empty_anchor_regex; "<a name=\"" + .anchor + "\"></a>")
| gsub($anchor_regex; "<a href=\"#" + .anchor + "\" id=\"" + .anchor + "\">" + .text + "</a>");
def transform_anchors_strip:
. | gsub($empty_anchor_regex; "")
| gsub($anchor_regex; .text);
def map_contents_recursively(transformer):
. + {
Chapter: (.Chapter + {
content: .Chapter.content | transformer,
sub_items: .Chapter.sub_items | map(map_contents_recursively(transformer)),
}),
};
def process_command:
.[0] as $context |
.[1] as $body |
$body + {
sections: $body.sections | map(map_contents_recursively(if $context.renderer == "html" then transform_anchors_html else transform_anchors_strip end)),
};
process_command

View file

@ -1,42 +0,0 @@
[book]
title = "Lix Reference Manual"
[build]
create-missing = false
[output.html]
additional-css = ["custom.css"]
additional-js = ["redirects.js"]
# Using our GitHub mirror enables easier typo fixes since there is no easy way
# to just submit a Gerrit CL by the web for trivial stuff.
edit-url-template = "https://github.com/lix-project/lix/tree/main/doc/manual/{path}"
git-repository-url = "https://git.lix.systems/lix-project/lix"
# Folding by default would prevent things like "Ctrl+F for nix-env" from working
# trivially, but the user should be able to fold if they want to.
fold.enable = true
fold.level = 30
# Handles replacing @docroot@ with a path to ./src relative to that markdown file,
# {{#include handlebars}}, and the @generated@ syntax used within these. it mostly
# but not entirely replaces the links preprocessor (which we cannot simply use due
# to @generated@ files living in a different directory to make meson happy). we do
# not want to disable the links preprocessor entirely though because that requires
# disabling *all* built-in preprocessors and selectively reenabling those we want.
[preprocessor.substitute]
command = "python3 doc/manual/substitute.py"
before = ["anchors", "links"]
[preprocessor.anchors]
renderers = ["html"]
command = "jq --from-file doc/manual/anchors.jq"
[output.markdown]
[output.linkcheck]
# no Internet during the build (in the sandbox)
follow-web-links = false
# mdbook-linkcheck does not understand [foo]{#bar} style links, resulting in
# excessive "Potential incomplete link" warnings. No other kind of warning was
# produced at the time of writing.
warning-policy = "ignore"

View file

@ -1,149 +0,0 @@
# This file is a mapping of metadata for change authors, sort of like
# maintainer-list.nix in nixpkgs.
#
# It's used for crediting people accurately in release notes. The release notes
# script will link to forgejo, then to GitHub if forgejo is not present.
#
# When adding someone from outside the Lix project, you generally want to simply link their GitHub profile without adding a display name unless they are well-known in the community by that display name.
#
# See doc/manual/src/contributing/hacking.md for more documentation on this file's format and typical usage.
9999years:
display_name: wiggles
forgejo: rbt
github: 9999years
Artturin:
github: Artturin
DavHau:
github: DavHau
Kha:
github: Kha
Lunaphied:
forgejo: Lunaphied
github: Lunaphied
Qyriad:
forgejo: Qyriad
github: Qyriad
SharzyL:
github: SharzyL
alois31:
forgejo: alois31
github: alois31
artemist:
display_name: Artemis Tosini
forgejo: artemist
cole-h:
display_name: Cole Helbling
github: cole-h
delan:
display_name: delan
forgejo: delan
github: delan
edolstra:
display_name: Eelco Dolstra
github: edolstra
ericson:
display_name: John Ericson
github: ericson2314
goldstein:
display_name: goldstein
forgejo: goldstein
github: GoldsteinE
horrors:
display_name: eldritch horrors
forgejo: pennae
github: pennae
iFreilicht:
github: iFreilicht
isabelroses:
forgejo: isabelroses
github: isabelroses
jade:
forgejo: jade
github: lf-
kjeremy:
github: kjeremy
kloenk:
forgejo: kloenk
github: kloenk
lovesegfault:
github: lovesegfault
ma27:
forgejo: ma27
github: ma27
matthewbauer:
github: matthewbauer
midnightveil:
display_name: julia
forgejo: midnightveil
github: midnightveil
ncfavier:
github: ncfavier
piegames:
display_name: piegames
forgejo: piegames
github: piegamesde
puck:
display_name: puck
forgejo: puck
github: puckipedia
quantumjump:
display_name: Quantum Jump
github: QuantumBJump
r-vdp:
github: r-vdp
raito:
display_name: Raito Bezarius
forgejo: raito
github: RaitoBezarius
roberth:
display_name: Robert Hensing
github: roberth
thufschmitt:
display_name: Théophane Hufschmitt
github: thufschmitt
tomberek:
display_name: Tom Bereknyei
github: tomberek
valentin:
display_name: Valentin Gagarin
github: fricklerhandwerk
winter:
forgejo: winter
github: winterqt
yshui:
github: yshui

View file

@ -1,11 +0,0 @@
h1:not(:first-of-type) {
margin-top: 1.3em;
}
h2 {
margin-top: 1em;
}
.hljs-meta {
user-select: none;
}

View file

@ -1,37 +0,0 @@
let
inherit (builtins) concatStringsSep attrValues mapAttrs;
inherit (import ./utils.nix) optionalString squash;
in
builtinsInfo:
let
showBuiltin =
name:
{
doc,
type,
impure-only,
}:
let
type' = optionalString (type != null) " (${type})";
impureNotice = optionalString impure-only ''
> **Note**
>
> Not available in [pure evaluation mode](@docroot@/command-ref/conf-file.md#conf-pure-eval).
'';
in
squash ''
<dt id="builtins-${name}">
<a href="#builtins-${name}"><code>${name}</code></a>${type'}
</dt>
<dd>
${doc}
${impureNotice}
</dd>
'';
in
concatStringsSep "\n" (attrValues (mapAttrs showBuiltin builtinsInfo))

View file

@ -1,35 +0,0 @@
let
inherit (builtins) concatStringsSep attrValues mapAttrs;
inherit (import ./utils.nix) optionalString squash;
in
builtinsInfo:
let
showBuiltin =
name:
{
doc,
args,
arity,
experimental-feature,
}:
let
experimentalNotice = optionalString (experimental-feature != null) ''
This function is only available if the [${experimental-feature}](@docroot@/contributing/experimental-features.md#xp-feature-${experimental-feature}) experimental feature is enabled.
'';
in
squash ''
<dt id="builtins-${name}">
<a href="#builtins-${name}"><code>${name} ${listArgs args}</code></a>
</dt>
<dd>
${doc}
${experimentalNotice}
</dd>
'';
listArgs = args: concatStringsSep " " (map (s: "<var>${s}</var>") args);
in
concatStringsSep "\n" (attrValues (mapAttrs showBuiltin builtinsInfo))

View file

@ -1,22 +0,0 @@
#!/usr/bin/env python3
import glob
import sys
# meson expects makefile-style dependency declarations, i.e.
#
# target: dependency...
#
# meson seems to pass depfiles straight on to ninja even though
# it also parses the file itself (or at least has code to do so
# in its tree), so we must live by ninja's rules: only slashes,
# spaces and octothorpes can be escaped, anything else is taken
# literally. since the rules for these aren't even the same for
# all three we will just fail when we encounter any of them (if
# asserts are off for some reason the depfile will likely point
# to nonexistant paths, making everything phony and thus fine.)
for path in glob.glob(sys.argv[1] + '/**', recursive=True):
assert '\\' not in path
assert ' ' not in path
assert '#' not in path
print("ignored:", path)

View file

@ -1,14 +0,0 @@
# Usually "experimental" or "deprecated"
kind:
# "xp" or "dp"
kindShort:
with builtins;
with import ./utils.nix;
let
showExperimentalFeature = name: doc: ''
- [`${name}`](@docroot@/contributing/${kind}-features.md#${kindShort}-feature-${name})
'';
in
xps: indent " " (concatStrings (attrValues (mapAttrs showExperimentalFeature xps)))

View file

@ -1,18 +0,0 @@
# Usually "experimental" or "deprecated"
_kind:
# "xp" or "dp"
kindShort:
with builtins;
with import ./utils.nix;
let
showFeature =
name: doc:
squash ''
## [`${name}`]{#${kindShort}-feature-${name}}
${doc}
'';
in
xps: (concatStringsSep "\n" (attrValues (mapAttrs showFeature xps)))

View file

@ -1,224 +0,0 @@
let
inherit (builtins)
attrNames
attrValues
fromJSON
listToAttrs
mapAttrs
concatStringsSep
concatMap
length
lessThan
replaceStrings
sort
;
inherit (import ./utils.nix)
concatStrings
optionalString
filterAttrs
trim
squash
unique
showSettings
;
in
inlineHTML: commandDump:
let
commandInfo = fromJSON commandDump;
showCommand =
{
command,
details,
filename,
toplevel,
}:
let
result = ''
> **Warning** \
> This program is
> [**experimental**](@docroot@/contributing/experimental-features.md#xp-feature-nix-command)
> and its interface is subject to change.
# Name
`${command}` - ${details.description}
# Synopsis
${showSynopsis command details.args}
${maybeSubcommands}
${maybeStoreDocs}
${maybeOptions}
'';
showSynopsis =
command: args:
let
showArgument = arg: "*${arg.label}*" + optionalString (!arg ? arity) "...";
arguments = concatStringsSep " " (map showArgument args);
in
''
`${command}` [*option*...] ${arguments}
'';
maybeSubcommands = optionalString (details ? commands && details.commands != { }) ''
where *subcommand* is one of the following:
${subcommands}
'';
subcommands = if length categories > 1 then listCategories else listSubcommands details.commands;
categories = sort (x: y: x.id < y.id) (
unique (map (cmd: cmd.category) (attrValues details.commands))
);
listCategories = concatStrings (map showCategory categories);
showCategory = cat: ''
**${toString cat.description}:**
${listSubcommands (filterAttrs (n: v: v.category == cat) details.commands)}
'';
listSubcommands = cmds: concatStrings (attrValues (mapAttrs showSubcommand cmds));
showSubcommand = name: subcmd: ''
* [`${command} ${name}`](./${appendName filename name}.md) - ${subcmd.description}
'';
# TODO: move this confusing special case out of here when implementing #8496
maybeStoreDocs = optionalString (details ? doc) (
replaceStrings [ "@stores@" ] [ storeDocs ] details.doc
);
maybeOptions = optionalString (details.flags != { }) ''
# Options
${showOptions details.flags toplevel.flags}
> **Note**
>
> See [`man nix.conf`](@docroot@/command-ref/conf-file.md#command-line-flags) for overriding configuration settings with command line flags.
'';
showOptions =
options: commonOptions:
let
allOptions = options // commonOptions;
showCategory = cat: ''
${optionalString (cat != "") "**${cat}:**"}
${listOptions (filterAttrs (n: v: v.category == cat) allOptions)}
'';
listOptions = opts: concatStringsSep "\n" (attrValues (mapAttrs showOption opts));
showOption =
name: option:
let
result = trim ''
- ${item}
${option.description}
'';
item =
if inlineHTML then
''<span id="opt-${name}">[`--${name}`](#opt-${name})</span> ${shortName} ${labels}''
else
"`--${name}` ${shortName} ${labels}";
shortName = optionalString (option ? shortName) ("/ `-${option.shortName}`");
labels = optionalString (option ? labels) (concatStringsSep " " (map (s: "*${s}*") option.labels));
in
result;
categories = sort lessThan (unique (map (cmd: cmd.category) (attrValues allOptions)));
in
concatStrings (map showCategory categories);
in
squash result;
appendName = filename: name: (if filename == "nix" then "nix3" else filename) + "-" + name;
processCommand =
{
command,
details,
filename,
toplevel,
}:
let
cmd = {
inherit command;
name = filename + ".md";
value = showCommand {
inherit
command
details
filename
toplevel
;
};
};
subcommand =
subCmd:
processCommand {
command = command + " " + subCmd;
details = details.commands.${subCmd};
filename = appendName filename subCmd;
inherit toplevel;
};
in
[ cmd ] ++ concatMap subcommand (attrNames details.commands or { });
manpages = processCommand {
command = "nix";
details = commandInfo.args;
filename = "nix";
toplevel = commandInfo.args;
};
storeDocs =
let
showStore =
name:
{
settings,
doc,
experimentalFeature,
}:
let
experimentalFeatureNote = optionalString (experimentalFeature != null) ''
> **Warning**
> This store is part of an
> [experimental feature](@docroot@/contributing/experimental-features.md).
To use this store, you need to make sure the corresponding experimental feature,
[`${experimentalFeature}`](@docroot@/contributing/experimental-features.md#xp-feature-${experimentalFeature}),
is enabled.
For example, include the following in [`nix.conf`](@docroot@/command-ref/conf-file.md):
```
extra-experimental-features = ${experimentalFeature}
```
'';
in
''
## ${name}
${doc}
${experimentalFeatureNote}
**Settings**:
${showSettings { inherit inlineHTML; } settings}
'';
in
concatStrings (attrValues (mapAttrs showStore commandInfo.stores));
in
listToAttrs manpages

View file

@ -1,61 +0,0 @@
#!/usr/bin/env python3
"""
This script is a helper for this project's Meson buildsystem, to replace its
usage of `nix eval --write-to`. Writing a JSON object as a nested directory
tree is more generic, easier to maintain, and far, far less cursed. Nix
has 'good' support for JSON output. Let's just use it.
"""
import argparse
from pathlib import Path
import json
import sys
name = 'json-to-tree.py'
def log(*args, **kwargs):
kwargs['file'] = sys.stderr
return print(f'{name}:', *args, **kwargs)
def write_dict_to_directory(current_directory: Path, data: dict, files_written=0):
current_directory.mkdir(parents=True, exist_ok=True)
for key, value in data.items():
nested_path = current_directory / key
match value:
case dict(nested_data):
files_written += write_dict_to_directory(nested_path, nested_data)
case str(content):
nested_path.write_text(content)
files_written += 1
case rest:
assert False, \
f'should have been called on a dict or string, not {type(rest)=}\n\t{rest=}'
return files_written
def main():
parser = argparse.ArgumentParser(name)
parser.add_argument('-i', '--input', type=argparse.FileType('r'), default='-',
help='The JSON input to operate on and output as a directory tree',
)
parser.add_argument('-o', '--output', type=Path, required=True,
help='The place to put the directory tree',
)
args = parser.parse_args()
json_string = args.input.read()
try:
data = json.loads(json_string)
except json.JSONDecodeError:
log(f'could not decode JSON from input: {json_string}')
raise
files_written = write_dict_to_directory(args.output, data)
log(f'wrote {files_written} files')
sys.exit(main())

View file

@ -1,363 +0,0 @@
nix_env_for_docs = {
'HOME': '/dummy',
'NIX_CONF_DIR': '/dummy',
'NIX_SSL_CERT_FILE': '/dummy/no-ca-bundle.crt',
'NIX_STATE_DIR': '/dummy',
'NIX_CONFIG': 'cores = 0',
}
nix_for_docs = [ nix, '--experimental-features', 'nix-command' ]
nix_eval_for_docs_common = nix_for_docs + [
'eval',
'-I', 'nix/corepkgs=corepkgs',
'--store', 'dummy://',
'--impure',
]
nix_eval_for_docs = nix_eval_for_docs_common + '--raw'
conf_file_json = custom_target(
command : nix_for_docs + [ 'show-config', '--json' ],
capture : true,
output : 'conf-file.json',
env : nix_env_for_docs,
# FIXME: put the actual lib targets in here? meson have introspection challenge 2024 though.
build_always_stale : true,
)
nix_conf_file_md_body = custom_target(
command : nix_eval_for_docs + [
'--expr',
'(import @INPUT0@).showSettings { inlineHTML = true; } (builtins.fromJSON (builtins.readFile @INPUT1@))',
],
capture : true,
input : [
'utils.nix',
conf_file_json,
],
output : 'conf-file.md.body',
env : nix_env_for_docs,
)
nix_conf_file_md = custom_target(
command : [ 'cat', '@INPUT@' ],
capture : true,
input : [
'src/command-ref/conf-file.md',
nix_conf_file_md_body,
],
output : 'conf-file.md',
)
nix_exp_features_json = custom_target(
command : [ nix, '__dump-xp-features' ],
capture : true,
output : 'xp-features.json',
# FIXME: put the actual lib targets in here? meson have introspection challenge 2024 though.
build_always_stale : true,
)
language_json = custom_target(
command: [nix, '__dump-language'],
output : 'language.json',
capture : true,
env : nix_env_for_docs,
# FIXME: put the actual lib targets in here? meson have introspection challenge 2024 though.
build_always_stale : true,
)
nix3_cli_json = custom_target(
command : [ nix, '__dump-cli' ],
capture : true,
output : 'nix.json',
env : nix_env_for_docs,
# FIXME: put the actual lib targets in here? meson have introspection challenge 2024 though.
build_always_stale : true,
)
generate_manual_deps = files(
'generate-deps.py',
)
# Generates builtins.md and builtin-constants.md.
subdir('src/language')
# Generates new-cli pages, {experimental,deprecated}-features-shortlist.md, and conf-file.md.
subdir('src/command-ref')
# Generates {experimental,deprecated}-feature-descriptions.md.
subdir('src/contributing')
# Generates rl-next-generated.md.
subdir('src/release-notes')
manual = custom_target(
'manual',
command : [
bash,
'-euo', 'pipefail',
'-c',
'''
@0@ @INPUT0@ @CURRENT_SOURCE_DIR@ > @DEPFILE@
cd @SOURCE_ROOT@
@1@ build doc/manual -d @2@ | { grep -Fv "because fragment resolution isn't implemented" || :; }
rm -rf @2@/manual
mv @2@/html @2@/manual
find @2@/manual -iname meson.build -delete
'''.format(
python.full_path(),
mdbook.full_path(),
meson.current_build_dir(),
),
],
input : [
generate_manual_deps,
'book.toml',
'anchors.jq',
'custom.css',
nix3_cli_files,
experimental_features_shortlist_md,
experimental_feature_descriptions_md,
deprecated_features_shortlist_md,
deprecated_feature_descriptions_md,
conf_file_md,
builtins_md,
builtin_constants_md,
rl_next_generated,
nix,
],
output : [
'manual',
'markdown',
],
depfile : 'manual.d',
env : {
'RUST_LOG': 'info',
'MDBOOK_SUBSTITUTE_SEARCH': meson.current_build_dir() / 'src',
},
)
manual_html = manual[0]
manual_md = manual[1]
install_subdir(
manual_html.full_path(),
install_dir : datadir / 'doc/nix',
)
nix_nested_manpages = [
[ 'nix-env',
[
'delete-generations',
'install',
'list-generations',
'query',
'rollback',
'set-flag',
'set',
'switch-generation',
'switch-profile',
'uninstall',
'upgrade',
],
],
[ 'nix-store',
[
'add-fixed',
'add',
'delete',
'dump-db',
'dump',
'export',
'gc',
'generate-binary-cache-key',
'import',
'load-db',
'optimise',
'print-env',
'query',
'read-log',
'realise',
'repair-path',
'restore',
'serve',
'verify',
'verify-path',
],
],
]
foreach command : nix_nested_manpages
foreach page : command[1]
title = command[0] + ' --' + page
section = '1'
custom_target(
command : [
'./render-manpage.sh',
'--out-no-smarty',
title,
section,
'@INPUT0@/command-ref' / command[0] / (page + '.md'),
'@OUTPUT0@',
],
input : [
manual_md,
nix,
],
output : command[0] + '-' + page + '.1',
install : true,
install_dir : mandir / 'man1',
)
endforeach
endforeach
nix3_manpages = [
'nix3-build',
'nix3-bundle',
'nix3-config',
'nix3-config-show',
'nix3-copy',
'nix3-daemon',
'nix3-derivation-add',
'nix3-derivation',
'nix3-derivation-show',
'nix3-develop',
'nix3-doctor',
'nix3-edit',
'nix3-eval',
'nix3-flake-archive',
'nix3-flake-check',
'nix3-flake-clone',
'nix3-flake-info',
'nix3-flake-init',
'nix3-flake-lock',
'nix3-flake',
'nix3-flake-metadata',
'nix3-flake-new',
'nix3-flake-prefetch',
'nix3-flake-show',
'nix3-flake-update',
'nix3-fmt',
'nix3-hash-file',
'nix3-hash',
'nix3-hash-path',
'nix3-hash-to-base16',
'nix3-hash-to-base32',
'nix3-hash-to-base64',
'nix3-hash-to-sri',
'nix3-help',
'nix3-help-stores',
'nix3-key-convert-secret-to-public',
'nix3-key-generate-secret',
'nix3-key',
'nix3-log',
'nix3-nar-cat',
'nix3-nar-dump-path',
'nix3-nar-ls',
'nix3-nar',
'nix3-path-info',
'nix3-print-dev-env',
'nix3-profile-diff-closures',
'nix3-profile-history',
'nix3-profile-install',
'nix3-profile-list',
'nix3-profile',
'nix3-profile-remove',
'nix3-profile-rollback',
'nix3-profile-upgrade',
'nix3-profile-wipe-history',
'nix3-realisation-info',
'nix3-realisation',
'nix3-registry-add',
'nix3-registry-list',
'nix3-registry',
'nix3-registry-pin',
'nix3-registry-remove',
'nix3-repl',
'nix3-run',
'nix3-search',
'nix3-shell',
'nix3-store-add-file',
'nix3-store-add-path',
'nix3-store-cat',
'nix3-store-copy-log',
'nix3-store-copy-sigs',
'nix3-store-delete',
'nix3-store-diff-closures',
'nix3-store-dump-path',
'nix3-store-gc',
'nix3-store-ls',
'nix3-store-make-content-addressed',
'nix3-store',
'nix3-store-optimise',
'nix3-store-path-from-hash-part',
'nix3-store-ping',
'nix3-store-prefetch-file',
'nix3-store-repair',
'nix3-store-sign',
'nix3-store-verify',
'nix3-upgrade-nix',
'nix3-why-depends',
'nix',
]
foreach page : nix3_manpages
section = '1'
custom_target(
command : [
bash,
'@INPUT0@',
page,
section,
'@INPUT1@/command-ref/new-cli/@0@.md'.format(page),
'@OUTPUT@',
],
input : [
'render-manpage.sh',
manual_md,
nix,
],
output : page + '.1',
install : true,
install_dir : mandir / 'man1',
)
endforeach
nix_manpages = [
[ 'nix-env', 1 ],
[ 'nix-store', 1 ],
[ 'nix-build', 1 ],
[ 'nix-shell', 1 ],
[ 'nix-instantiate', 1 ],
[ 'nix-collect-garbage', 1 ],
[ 'nix-prefetch-url', 1 ],
[ 'nix-channel', 1 ],
[ 'nix-hash', 1 ],
[ 'nix-copy-closure', 1 ],
[ 'nix.conf', 5, 'conf-file.md' ],
[ 'nix-daemon', 8 ],
[ 'nix-profiles', 5, 'files/profiles.md' ],
]
foreach entry : nix_manpages
title = entry[0]
# nix.conf.5 and nix-profiles.5 are based off of conf-file.md and files/profiles.md,
# rather than a stem identical to its mdbook source.
# Therefore we use an optional third element of this array to override the name pattern
md_file = entry.get(2, title + '.md')
section = entry[1].to_string()
custom_target(
command : [
bash,
'@INPUT0@',
title,
section,
'@INPUT1@/command-ref/@0@'.format(md_file),
'@OUTPUT@',
],
input : [
'render-manpage.sh',
manual_md,
entry.get(3, []),
nix,
],
output : '@0@.@1@'.format(entry[0], entry[1]),
install : true,
install_dir : mandir / 'man@0@'.format(entry[1]),
)
endforeach

View file

@ -1,32 +0,0 @@
#!/usr/bin/env bash
set -euo pipefail
infile="$1"
outfile="$2"
shift 2
# set a search path for includes. the old makefile-based system splorked
# everything into the source tree and was thus able to not have a search
# path, but the meson system generates intermediate files into dedicated
# directories separate from the source. we still retain the implicit old
# behavior for now as the base search path, once meson is the default we
# can revisit this and remove the implicit search path entry. it's fine.
set -- "$(dirname "$infile")" "$@"
# re-implement mdBook's include directive to make it usable for terminal output and for proper @docroot@ substitution
(grep '{{#include' "$infile" || true) | while read -r line; do
found=false
include="$(printf "$line" | sed 's/{{#include \(.*\)}}/\1/')"
for path in "$@"; do
filename="$path/$include"
if [ -e "$filename" ]; then
found=true
matchline="$(printf "$line" | sed 's|/|\\/|g')"
sed -i "/$matchline/r $filename" "$outfile"
sed -i "s/$matchline//" "$outfile"
break
fi
done
$found || ( echo "#include-d file '$filename' does not exist." >&2; exit 1; )
done

View file

@ -1,40 +0,0 @@
<?xml version="1.0"?>
<xsl:stylesheet
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:str="http://exslt.org/strings"
extension-element-prefixes="str">
<xsl:output method="xml"/>
<xsl:template match="function|command|literal|varname|filename|option|quote">`<xsl:apply-templates/>'</xsl:template>
<xsl:template match="token"><xsl:text> </xsl:text><xsl:apply-templates /><xsl:text>
</xsl:text></xsl:template>
<xsl:template match="screen|programlisting">
<screen><xsl:apply-templates select="str:split(., '&#xA;')" /></screen>
</xsl:template>
<xsl:template match="section[following::section]">
<section>
<xsl:apply-templates />
<screen><xsl:text>
</xsl:text></screen>
</section>
</xsl:template>
<xsl:template match="*">
<xsl:element name="{name(.)}" namespace="{namespace-uri(.)}">
<xsl:copy-of select="namespace::*" />
<xsl:for-each select="@*">
<xsl:attribute name="{name(.)}" namespace="{namespace-uri(.)}">
<xsl:value-of select="."/>
</xsl:attribute>
</xsl:for-each>
<xsl:apply-templates/>
</xsl:element>
</xsl:template>
</xsl:stylesheet>

View file

@ -1,8 +0,0 @@
[lix-docs]
type = s3
provider = Other
env_auth = true
endpoint = https://s3.lix.systems
location_constraint = garage
region = garage
acl = private

View file

@ -1,440 +0,0 @@
// redirect rules for URL fragments (client-side) to prevent link rot.
// this must be done on the client side, as web servers do not see the fragment part of the URL.
// it will only work with JavaScript enabled in the browser, but this is the best we can do here.
// see ./_redirects for path redirects (client-side)
// redirects are declared as follows:
// each entry has as its key a path matching the requested URL path, relative to the mdBook document root.
//
// IMPORTANT: it must specify the full path with file name and suffix
//
// each entry is itself a set of key-value pairs, where
// - keys are anchors on the matched path.
// - values are redirection targets relative to the current path.
const redirects = {
"index.html": {
"part-advanced-topics": "advanced-topics/advanced-topics.html",
"chap-tuning-cores-and-jobs": "advanced-topics/cores-vs-jobs.html",
"chap-diff-hook": "advanced-topics/diff-hook.html",
"check-dirs-are-unregistered": "advanced-topics/diff-hook.html#check-dirs-are-unregistered",
"chap-distributed-builds": "advanced-topics/distributed-builds.html",
"chap-post-build-hook": "advanced-topics/post-build-hook.html",
"chap-post-build-hook-caveats": "advanced-topics/post-build-hook.html#implementation-caveats",
"chap-writing-nix-expressions": "language/index.html",
"part-command-ref": "command-ref/command-ref.html",
"conf-allow-import-from-derivation": "command-ref/conf-file.html#conf-allow-import-from-derivation",
"conf-allowed-uris": "command-ref/conf-file.html#conf-allowed-uris",
"conf-allowed-users": "command-ref/conf-file.html#conf-allowed-users",
"conf-auto-optimise-store": "command-ref/conf-file.html#conf-auto-optimise-store",
"conf-binary-cache-public-keys": "command-ref/conf-file.html#conf-binary-cache-public-keys",
"conf-binary-caches": "command-ref/conf-file.html#conf-binary-caches",
"conf-build-compress-log": "command-ref/conf-file.html#conf-build-compress-log",
"conf-build-cores": "command-ref/conf-file.html#conf-build-cores",
"conf-build-extra-chroot-dirs": "command-ref/conf-file.html#conf-build-extra-chroot-dirs",
"conf-build-extra-sandbox-paths": "command-ref/conf-file.html#conf-build-extra-sandbox-paths",
"conf-build-fallback": "command-ref/conf-file.html#conf-build-fallback",
"conf-build-max-jobs": "command-ref/conf-file.html#conf-build-max-jobs",
"conf-build-max-log-size": "command-ref/conf-file.html#conf-build-max-log-size",
"conf-build-max-silent-time": "command-ref/conf-file.html#conf-build-max-silent-time",
"conf-build-timeout": "command-ref/conf-file.html#conf-build-timeout",
"conf-build-use-chroot": "command-ref/conf-file.html#conf-build-use-chroot",
"conf-build-use-sandbox": "command-ref/conf-file.html#conf-build-use-sandbox",
"conf-build-use-substitutes": "command-ref/conf-file.html#conf-build-use-substitutes",
"conf-build-users-group": "command-ref/conf-file.html#conf-build-users-group",
"conf-builders": "command-ref/conf-file.html#conf-builders",
"conf-builders-use-substitutes": "command-ref/conf-file.html#conf-builders-use-substitutes",
"conf-compress-build-log": "command-ref/conf-file.html#conf-compress-build-log",
"conf-connect-timeout": "command-ref/conf-file.html#conf-connect-timeout",
"conf-cores": "command-ref/conf-file.html#conf-cores",
"conf-diff-hook": "command-ref/conf-file.html#conf-diff-hook",
"conf-env-keep-derivations": "command-ref/conf-file.html#conf-env-keep-derivations",
"conf-extra-binary-caches": "command-ref/conf-file.html#conf-extra-binary-caches",
"conf-extra-platforms": "command-ref/conf-file.html#conf-extra-platforms",
"conf-extra-sandbox-paths": "command-ref/conf-file.html#conf-extra-sandbox-paths",
"conf-extra-substituters": "command-ref/conf-file.html#conf-extra-substituters",
"conf-fallback": "command-ref/conf-file.html#conf-fallback",
"conf-fsync-metadata": "command-ref/conf-file.html#conf-fsync-metadata",
"conf-gc-keep-derivations": "command-ref/conf-file.html#conf-gc-keep-derivations",
"conf-gc-keep-outputs": "command-ref/conf-file.html#conf-gc-keep-outputs",
"conf-hashed-mirrors": "command-ref/conf-file.html#conf-hashed-mirrors",
"conf-http-connections": "command-ref/conf-file.html#conf-http-connections",
"conf-keep-build-log": "command-ref/conf-file.html#conf-keep-build-log",
"conf-keep-derivations": "command-ref/conf-file.html#conf-keep-derivations",
"conf-keep-env-derivations": "command-ref/conf-file.html#conf-keep-env-derivations",
"conf-keep-outputs": "command-ref/conf-file.html#conf-keep-outputs",
"conf-max-build-log-size": "command-ref/conf-file.html#conf-max-build-log-size",
"conf-max-free": "command-ref/conf-file.html#conf-max-free",
"conf-max-jobs": "command-ref/conf-file.html#conf-max-jobs",
"conf-max-silent-time": "command-ref/conf-file.html#conf-max-silent-time",
"conf-min-free": "command-ref/conf-file.html#conf-min-free",
"conf-narinfo-cache-negative-ttl": "command-ref/conf-file.html#conf-narinfo-cache-negative-ttl",
"conf-narinfo-cache-positive-ttl": "command-ref/conf-file.html#conf-narinfo-cache-positive-ttl",
"conf-netrc-file": "command-ref/conf-file.html#conf-netrc-file",
"conf-plugin-files": "command-ref/conf-file.html#conf-plugin-files",
"conf-post-build-hook": "command-ref/conf-file.html#conf-post-build-hook",
"conf-pre-build-hook": "command-ref/conf-file.html#conf-pre-build-hook",
"conf-require-sigs": "command-ref/conf-file.html#conf-require-sigs",
"conf-restrict-eval": "command-ref/conf-file.html#conf-restrict-eval",
"conf-run-diff-hook": "command-ref/conf-file.html#conf-run-diff-hook",
"conf-sandbox": "command-ref/conf-file.html#conf-sandbox",
"conf-sandbox-dev-shm-size": "command-ref/conf-file.html#conf-sandbox-dev-shm-size",
"conf-sandbox-paths": "command-ref/conf-file.html#conf-sandbox-paths",
"conf-secret-key-files": "command-ref/conf-file.html#conf-secret-key-files",
"conf-show-trace": "command-ref/conf-file.html#conf-show-trace",
"conf-stalled-download-timeout": "command-ref/conf-file.html#conf-stalled-download-timeout",
"conf-substitute": "command-ref/conf-file.html#conf-substitute",
"conf-substituters": "command-ref/conf-file.html#conf-substituters",
"conf-system": "command-ref/conf-file.html#conf-system",
"conf-system-features": "command-ref/conf-file.html#conf-system-features",
"conf-tarball-ttl": "command-ref/conf-file.html#conf-tarball-ttl",
"conf-timeout": "command-ref/conf-file.html#conf-timeout",
"conf-trace-function-calls": "command-ref/conf-file.html#conf-trace-function-calls",
"conf-trusted-binary-caches": "command-ref/conf-file.html#conf-trusted-binary-caches",
"conf-trusted-public-keys": "command-ref/conf-file.html#conf-trusted-public-keys",
"conf-trusted-substituters": "command-ref/conf-file.html#conf-trusted-substituters",
"conf-trusted-users": "command-ref/conf-file.html#conf-trusted-users",
"extra-sandbox-paths": "command-ref/conf-file.html#extra-sandbox-paths",
"sec-conf-file": "command-ref/conf-file.html",
"env-NIX_PATH": "command-ref/env-common.html#env-NIX_PATH",
"env-common": "command-ref/env-common.html",
"envar-remote": "command-ref/env-common.html#env-NIX_REMOTE",
"sec-common-env": "command-ref/env-common.html",
"ch-files": "command-ref/files.html",
"ch-main-commands": "command-ref/main-commands.html",
"opt-out-link": "command-ref/nix-build.html#opt-out-link",
"sec-nix-build": "command-ref/nix-build.html",
"sec-nix-channel": "command-ref/nix-channel.html",
"sec-nix-collect-garbage": "command-ref/nix-collect-garbage.html",
"sec-nix-copy-closure": "command-ref/nix-copy-closure.html",
"sec-nix-daemon": "command-ref/nix-daemon.html",
"refsec-nix-env-install-examples": "command-ref/nix-env.html#examples",
"rsec-nix-env-install": "command-ref/nix-env.html#operation---install",
"rsec-nix-env-set": "command-ref/nix-env.html#operation---set",
"rsec-nix-env-set-flag": "command-ref/nix-env.html#operation---set-flag",
"rsec-nix-env-upgrade": "command-ref/nix-env.html#operation---upgrade",
"sec-nix-env": "command-ref/nix-env.html",
"ssec-version-comparisons": "command-ref/nix-env.html#versions",
"sec-nix-hash": "command-ref/nix-hash.html",
"sec-nix-instantiate": "command-ref/nix-instantiate.html",
"sec-nix-prefetch-url": "command-ref/nix-prefetch-url.html",
"sec-nix-shell": "command-ref/nix-shell.html",
"ssec-nix-shell-shebang": "command-ref/nix-shell.html#use-as-a--interpreter",
"nixref-queries": "command-ref/nix-store.html#queries",
"opt-add-root": "command-ref/nix-store.html#opt-add-root",
"refsec-nix-store-dump": "command-ref/nix-store.html#operation---dump",
"refsec-nix-store-export": "command-ref/nix-store.html#operation---export",
"refsec-nix-store-import": "command-ref/nix-store.html#operation---import",
"refsec-nix-store-query": "command-ref/nix-store.html#operation---query",
"refsec-nix-store-verify": "command-ref/nix-store.html#operation---verify",
"rsec-nix-store-gc": "command-ref/nix-store.html#operation---gc",
"rsec-nix-store-generate-binary-cache-key": "command-ref/nix-store.html#operation---generate-binary-cache-key",
"rsec-nix-store-realise": "command-ref/nix-store.html#operation---realise",
"rsec-nix-store-serve": "command-ref/nix-store.html#operation---serve",
"sec-nix-store": "command-ref/nix-store.html",
"opt-I": "command-ref/opt-common.html#opt-I",
"opt-attr": "command-ref/opt-common.html#opt-attr",
"opt-common": "command-ref/opt-common.html",
"opt-cores": "command-ref/opt-common.html#opt-cores",
"opt-log-format": "command-ref/opt-common.html#opt-log-format",
"opt-max-jobs": "command-ref/opt-common.html#opt-max-jobs",
"opt-max-silent-time": "command-ref/opt-common.html#opt-max-silent-time",
"opt-timeout": "command-ref/opt-common.html#opt-timeout",
"sec-common-options": "command-ref/opt-common.html",
"ch-utilities": "command-ref/utilities.html",
"chap-hacking": "contributing/hacking.html",
"adv-attr-allowSubstitutes": "language/advanced-attributes.html#adv-attr-allowSubstitutes",
"adv-attr-allowedReferences": "language/advanced-attributes.html#adv-attr-allowedReferences",
"adv-attr-allowedRequisites": "language/advanced-attributes.html#adv-attr-allowedRequisites",
"adv-attr-disallowedReferences": "language/advanced-attributes.html#adv-attr-disallowedReferences",
"adv-attr-disallowedRequisites": "language/advanced-attributes.html#adv-attr-disallowedRequisites",
"adv-attr-exportReferencesGraph": "language/advanced-attributes.html#adv-attr-exportReferencesGraph",
"adv-attr-impureEnvVars": "language/advanced-attributes.html#adv-attr-impureEnvVars",
"adv-attr-outputHash": "language/advanced-attributes.html#adv-attr-outputHash",
"adv-attr-outputHashAlgo": "language/advanced-attributes.html#adv-attr-outputHashAlgo",
"adv-attr-outputHashMode": "language/advanced-attributes.html#adv-attr-outputHashMode",
"adv-attr-passAsFile": "language/advanced-attributes.html#adv-attr-passAsFile",
"adv-attr-preferLocalBuild": "language/advanced-attributes.html#adv-attr-preferLocalBuild",
"fixed-output-drvs": "language/advanced-attributes.html#adv-attr-outputHash",
"sec-advanced-attributes": "language/advanced-attributes.html",
"builtin-abort": "language/builtins.html#builtins-abort",
"builtin-add": "language/builtins.html#builtins-add",
"builtin-all": "language/builtins.html#builtins-all",
"builtin-any": "language/builtins.html#builtins-any",
"builtin-attrNames": "language/builtins.html#builtins-attrNames",
"builtin-attrValues": "language/builtins.html#builtins-attrValues",
"builtin-baseNameOf": "language/builtins.html#builtins-baseNameOf",
"builtin-bitAnd": "language/builtins.html#builtins-bitAnd",
"builtin-bitOr": "language/builtins.html#builtins-bitOr",
"builtin-bitXor": "language/builtins.html#builtins-bitXor",
"builtin-builtins": "language/builtins.html#builtins-builtins",
"builtin-compareVersions": "language/builtins.html#builtins-compareVersions",
"builtin-concatLists": "language/builtins.html#builtins-concatLists",
"builtin-concatStringsSep": "language/builtins.html#builtins-concatStringsSep",
"builtin-currentSystem": "language/builtins.html#builtins-currentSystem",
"builtin-deepSeq": "language/builtins.html#builtins-deepSeq",
"builtin-derivation": "language/builtins.html#builtins-derivation",
"builtin-dirOf": "language/builtins.html#builtins-dirOf",
"builtin-div": "language/builtins.html#builtins-div",
"builtin-elem": "language/builtins.html#builtins-elem",
"builtin-elemAt": "language/builtins.html#builtins-elemAt",
"builtin-fetchGit": "language/builtins.html#builtins-fetchGit",
"builtin-fetchTarball": "language/builtins.html#builtins-fetchTarball",
"builtin-fetchurl": "language/builtins.html#builtins-fetchurl",
"builtin-filterSource": "language/builtins.html#builtins-filterSource",
"builtin-foldl-prime": "language/builtins.html#builtins-foldl-prime",
"builtin-fromJSON": "language/builtins.html#builtins-fromJSON",
"builtin-functionArgs": "language/builtins.html#builtins-functionArgs",
"builtin-genList": "language/builtins.html#builtins-genList",
"builtin-getAttr": "language/builtins.html#builtins-getAttr",
"builtin-getEnv": "language/builtins.html#builtins-getEnv",
"builtin-hasAttr": "language/builtins.html#builtins-hasAttr",
"builtin-hashFile": "language/builtins.html#builtins-hashFile",
"builtin-hashString": "language/builtins.html#builtins-hashString",
"builtin-head": "language/builtins.html#builtins-head",
"builtin-import": "language/builtins.html#builtins-import",
"builtin-intersectAttrs": "language/builtins.html#builtins-intersectAttrs",
"builtin-isAttrs": "language/builtins.html#builtins-isAttrs",
"builtin-isBool": "language/builtins.html#builtins-isBool",
"builtin-isFloat": "language/builtins.html#builtins-isFloat",
"builtin-isFunction": "language/builtins.html#builtins-isFunction",
"builtin-isInt": "language/builtins.html#builtins-isInt",
"builtin-isList": "language/builtins.html#builtins-isList",
"builtin-isNull": "language/builtins.html#builtins-isNull",
"builtin-isString": "language/builtins.html#builtins-isString",
"builtin-length": "language/builtins.html#builtins-length",
"builtin-lessThan": "language/builtins.html#builtins-lessThan",
"builtin-listToAttrs": "language/builtins.html#builtins-listToAttrs",
"builtin-map": "language/builtins.html#builtins-map",
"builtin-match": "language/builtins.html#builtins-match",
"builtin-mul": "language/builtins.html#builtins-mul",
"builtin-parseDrvName": "language/builtins.html#builtins-parseDrvName",
"builtin-path": "language/builtins.html#builtins-path",
"builtin-pathExists": "language/builtins.html#builtins-pathExists",
"builtin-placeholder": "language/builtins.html#builtins-placeholder",
"builtin-readDir": "language/builtins.html#builtins-readDir",
"builtin-readFile": "language/builtins.html#builtins-readFile",
"builtin-removeAttrs": "language/builtins.html#builtins-removeAttrs",
"builtin-replaceStrings": "language/builtins.html#builtins-replaceStrings",
"builtin-seq": "language/builtins.html#builtins-seq",
"builtin-sort": "language/builtins.html#builtins-sort",
"builtin-split": "language/builtins.html#builtins-split",
"builtin-splitVersion": "language/builtins.html#builtins-splitVersion",
"builtin-stringLength": "language/builtins.html#builtins-stringLength",
"builtin-sub": "language/builtins.html#builtins-sub",
"builtin-substring": "language/builtins.html#builtins-substring",
"builtin-tail": "language/builtins.html#builtins-tail",
"builtin-throw": "language/builtins.html#builtins-throw",
"builtin-toFile": "language/builtins.html#builtins-toFile",
"builtin-toJSON": "language/builtins.html#builtins-toJSON",
"builtin-toPath": "language/builtins.html#builtins-toPath",
"builtin-toString": "language/builtins.html#builtins-toString",
"builtin-toXML": "language/builtins.html#builtins-toXML",
"builtin-trace": "language/builtins.html#builtins-trace",
"builtin-tryEval": "language/builtins.html#builtins-tryEval",
"builtin-typeOf": "language/builtins.html#builtins-typeOf",
"ssec-builtins": "language/builtins.html",
"attr-system": "language/derivations.html#attr-system",
"ssec-derivation": "language/derivations.html",
"ch-expression-language": "language/index.html",
"sec-constructs": "language/constructs.html",
"sect-let-language": "language/constructs.html#let-language",
"ss-functions": "language/constructs.html#functions",
"sec-language-operators": "language/operators.html",
"table-operators": "language/operators.html",
"ssec-values": "language/values.html",
"gloss-closure": "glossary.html#gloss-closure",
"gloss-derivation": "glossary.html#gloss-derivation",
"gloss-deriver": "glossary.html#gloss-deriver",
"gloss-nar": "glossary.html#gloss-nar",
"gloss-output-path": "glossary.html#gloss-output-path",
"gloss-profile": "glossary.html#gloss-profile",
"gloss-reachable": "glossary.html#gloss-reachable",
"gloss-reference": "glossary.html#gloss-reference",
"gloss-substitute": "glossary.html#gloss-substitute",
"gloss-user-env": "glossary.html#gloss-user-env",
"gloss-validity": "glossary.html#gloss-validity",
"part-glossary": "glossary.html",
"sec-building-source": "installation/building-source.html",
"ch-env-variables": "installation/env-variables.html",
"sec-installer-proxy-settings": "installation/env-variables.html#proxy-environment-variables",
"sec-nix-ssl-cert-file": "installation/env-variables.html#nix_ssl_cert_file",
"sec-nix-ssl-cert-file-with-nix-daemon-and-macos": "installation/env-variables.html#nix_ssl_cert_file-with-macos-and-the-nix-daemon",
"chap-installation": "installation/installation.html",
"ch-installing-binary": "installation/installing-binary.html",
"sect-macos-installation": "installation/installing-binary.html#macos-installation",
"sect-macos-installation-change-store-prefix": "installation/installing-binary.html#macos-installation",
"sect-macos-installation-encrypted-volume": "installation/installing-binary.html#macos-installation",
"sect-macos-installation-recommended-notes": "installation/installing-binary.html#macos-installation",
"sect-macos-installation-symlink": "installation/installing-binary.html#macos-installation",
"sect-multi-user-installation": "installation/installing-binary.html#multi-user-installation",
"sect-nix-install-binary-tarball": "installation/installing-binary.html#installing-from-a-binary-tarball",
"sect-nix-install-pinned-version-url": "installation/installing-binary.html#installing-a-pinned-nix-version-from-a-url",
"sect-single-user-installation": "installation/installing-binary.html#single-user-installation",
"ch-installing-source": "installation/installing-source.html",
"ssec-multi-user": "installation/multi-user.html",
"ch-nix-security": "installation/nix-security.html",
"sec-obtaining-source": "installation/obtaining-source.html",
"sec-prerequisites-source": "installation/prerequisites-source.html",
"sec-single-user": "installation/single-user.html",
"ch-supported-platforms": "installation/supported-platforms.html",
"ch-upgrading-nix": "installation/upgrading.html",
"ch-about-nix": "introduction.html",
"chap-introduction": "introduction.html",
"ch-basic-package-mgmt": "package-management/basic-package-mgmt.html",
"ssec-binary-cache-substituter": "package-management/binary-cache-substituter.html",
"sec-channels": "command-ref/nix-channel.html",
"ssec-copy-closure": "package-management/copy-closure.html",
"sec-garbage-collection": "package-management/garbage-collection.html",
"ssec-gc-roots": "package-management/garbage-collector-roots.html",
"chap-package-management": "package-management/package-management.html",
"sec-profiles": "package-management/profiles.html",
"ssec-s3-substituter": "package-management/s3-substituter.html",
"ssec-s3-substituter-anonymous-reads": "package-management/s3-substituter.html#anonymous-reads-to-your-s3-compatible-binary-cache",
"ssec-s3-substituter-authenticated-reads": "package-management/s3-substituter.html#authenticated-reads-to-your-s3-binary-cache",
"ssec-s3-substituter-authenticated-writes": "package-management/s3-substituter.html#authenticated-writes-to-your-s3-compatible-binary-cache",
"sec-sharing-packages": "package-management/sharing-packages.html",
"ssec-ssh-substituter": "package-management/ssh-substituter.html",
"chap-quick-start": "quick-start.html",
"sec-relnotes": "release-notes/release-notes.html",
"ch-relnotes-0.10.1": "release-notes/rl-0.10.1.html",
"ch-relnotes-0.10": "release-notes/rl-0.10.html",
"ssec-relnotes-0.11": "release-notes/rl-0.11.html",
"ssec-relnotes-0.12": "release-notes/rl-0.12.html",
"ssec-relnotes-0.13": "release-notes/rl-0.13.html",
"ssec-relnotes-0.14": "release-notes/rl-0.14.html",
"ssec-relnotes-0.15": "release-notes/rl-0.15.html",
"ssec-relnotes-0.16": "release-notes/rl-0.16.html",
"ch-relnotes-0.5": "release-notes/rl-0.5.html",
"ch-relnotes-0.6": "release-notes/rl-0.6.html",
"ch-relnotes-0.7": "release-notes/rl-0.7.html",
"ch-relnotes-0.8.1": "release-notes/rl-0.8.1.html",
"ch-relnotes-0.8": "release-notes/rl-0.8.html",
"ch-relnotes-0.9.1": "release-notes/rl-0.9.1.html",
"ch-relnotes-0.9.2": "release-notes/rl-0.9.2.html",
"ch-relnotes-0.9": "release-notes/rl-0.9.html",
"ssec-relnotes-1.0": "release-notes/rl-1.0.html",
"ssec-relnotes-1.1": "release-notes/rl-1.1.html",
"ssec-relnotes-1.10": "release-notes/rl-1.10.html",
"ssec-relnotes-1.11.10": "release-notes/rl-1.11.10.html",
"ssec-relnotes-1.11": "release-notes/rl-1.11.html",
"ssec-relnotes-1.2": "release-notes/rl-1.2.html",
"ssec-relnotes-1.3": "release-notes/rl-1.3.html",
"ssec-relnotes-1.4": "release-notes/rl-1.4.html",
"ssec-relnotes-1.5.1": "release-notes/rl-1.5.1.html",
"ssec-relnotes-1.5.2": "release-notes/rl-1.5.2.html",
"ssec-relnotes-1.5": "release-notes/rl-1.5.html",
"ssec-relnotes-1.6.1": "release-notes/rl-1.6.1.html",
"ssec-relnotes-1.6.0": "release-notes/rl-1.6.html",
"ssec-relnotes-1.7": "release-notes/rl-1.7.html",
"ssec-relnotes-1.8": "release-notes/rl-1.8.html",
"ssec-relnotes-1.9": "release-notes/rl-1.9.html",
"ssec-relnotes-2.0": "release-notes/rl-2.0.html",
"ssec-relnotes-2.1": "release-notes/rl-2.1.html",
"ssec-relnotes-2.2": "release-notes/rl-2.2.html",
"ssec-relnotes-2.3": "release-notes/rl-2.3.html",
},
"language/values.html": {
"simple-values": "#primitives",
"lists": "#list",
"strings": "#string",
"lists": "#list",
"attribute-sets": "#attribute-set",
},
"installation/installing-binary.html": {
"linux": "uninstall.html#linux",
"macos": "uninstall.html#macos",
"uninstalling": "uninstall.html",
},
"contributing/hacking.html": {
"nix-with-flakes": "#building-nix-with-flakes",
"classic-nix": "#building-nix",
"running-tests": "testing.html#running-tests",
"unit-tests": "testing.html#unit-tests",
"functional-tests": "testing.html#functional-tests",
"debugging-failing-functional-tests": "testing.html#debugging-failing-functional-tests",
"integration-tests": "testing.html#integration-tests",
"installer-tests": "testing.html#installer-tests",
"one-time-setup": "testing.html#one-time-setup",
"using-the-ci-generated-installer-for-manual-testing": "testing.html#using-the-ci-generated-installer-for-manual-testing",
}
};
// the following code matches the current page's URL against the set of redirects.
//
// it is written to minimize the latency between page load and redirect.
// therefore we avoid function calls, copying data, and unnecessary loops.
// IMPORTANT: we use stateful array operations and their order matters!
//
// matching URLs is more involved than it should be:
//
// 1. `document.location.pathname` can have an arbitrary prefix.
//
// 2. `path_to_root` is set by mdBook. it consists only of `../`s and
// determines the depth of `<path>` relative to the prefix:
//
// `document.location.pathname`
// |------------------------------|
// /<prefix>/<path>/[<file>[.html]][#<anchor>]
// |----|
// `path_to_root` has same number of path segments
//
// source: https://phaiax.github.io/mdBook/format/theme/index-hbs.html#data
//
// 3. the following paths are equivalent:
//
// /foo/bar/
// /foo/bar/index.html
// /foo/bar/index
//
// 4. the following paths are also equivalent:
//
// /foo/bar/baz
// /foo/bar/baz.html
//
let segments = document.location.pathname.split('/');
let file = segments.pop();
// normalize file name
if (file === '') { file = "index.html"; }
else if (!file.endsWith('.html')) { file = file + '.html'; }
segments.push(file);
// use `path_to_root` to discern prefix from path.
const depth = path_to_root.split('/').length;
// remove segments containing prefix. the following works because
// 1. the original `document.location.pathname` is absolute,
// hence first element of `segments` is always empty.
// 2. last element of splitting `path_to_root` is also always empty.
// 3. last element of `segments` is the file name.
//
// visual example:
//
// '/foo/bar/baz.html'.split('/') -> [ '', 'foo', 'bar', 'baz.html' ]
// '../'.split('/') -> [ '..', '' ]
//
// the following operations will then result in
//
// path = 'bar/baz.html'
//
segments.splice(0, segments.length - depth);
const path = segments.join('/');
// anchor starts with the hash character (`#`),
// but our redirect declarations don't, so we strip it.
// example:
// document.location.hash -> '#foo'
// document.location.hash.substring(1) -> 'foo'
const anchor = document.location.hash.substring(1);
const redirect = redirects[path];
if (redirect) {
const target = redirect[anchor];
if (target) {
document.location.href = target;
}
}

View file

@ -1,25 +0,0 @@
#!/usr/bin/env bash
set -euo pipefail
lowdown_args=
if [ "$1" = --out-no-smarty ]; then
lowdown_args=--out-no-smarty
shift
fi
[ "$#" = 4 ] || {
echo "wrong number of args passed" >&2
exit 1
}
title="$1"
section="$2"
infile="$3"
outfile="$4"
(
printf "Title: %s\n\n" "$title"
cat "$infile"
) | lowdown -sT man --nroff-nolinks $lowdown_args -M section="$section" -o "$outfile"

View file

@ -1,21 +0,0 @@
---
synopsis: "Build failures caused by `allowSubstitutes = false` while being the wrong system now produce a decent error"
issues: [fj#484]
cls: [1841]
category: Fixes
credits: jade
---
Nix allows derivations to set `allowSubstitutes = false` in order to force them to be built locally without querying substituters for them.
This is useful for derivations that are very fast to build (especially if they produce large output).
However, this can shoot you in the foot if the derivation *has* to be substituted such as if the derivation is for another architecture, which is what `--always-allow-substitutes` is for.
Perhaps such derivations that are known to be impossible to build locally should ignore `allowSubstitutes` (irrespective of remote builders) in the future, but this at least reports the failure and solution directly.
```
$ nix build -f fail.nix
error: a 'unicornsandrainbows-linux' with features {} is required to build '/nix/store/...-meow.drv', but I am a 'x86_64-linux' with features {...}
Hint: the failing derivation has allowSubstitutes set to false, forcing it to be built rather than substituted.
Passing --always-allow-substitutes to force substitution may resolve this failure if the path is available in a substituter.
```

View file

@ -1,10 +0,0 @@
---
synopsis: "`Alt+Left` and `Alt+Right` go back/forwards by words in `nix repl`"
issues: [fj#501]
cls: [1883]
category: Fixes
credits: 9999years
---
`nix repl` now recognizes `Alt+Left` and `Alt+Right` for navigating by words
when entering input in `nix repl` on more terminals/platforms.

View file

@ -1,17 +0,0 @@
---
synopsis: Deprecated language features
issues: [fj#437]
cls: [1785, 1736, 1735, 1744]
category: Breaking Changes
credits: [piegames, horrors]
---
A system for deprecation (and then the planned removal) of undesired language features has been put into place.
It is controlled via feature flags much like experimental features, except that the deprecations are enabled default,
and can be disabled via the flags for backwards compatibility (opt-out with `--extra-deprecated-features` or the Nix configuration file).
- `url-literals`: **URL literals** have long been obsolete and discouraged of use, and now they are officially deprecated.
This means that all URLs must be properly put within quotes like all other strings.
- `rec-set-overrides`: **__overrides** is an old arcane syntax which has not been in use for more than a decade.
It is soft-deprecated with a warning only, with the plan to turn that into an error in a future release.
- `ancient-let`: **The old `let` syntax** (`let { body = …; … }`) is soft-deprecated with a warning as well. Use the regular `let … in` instead.

View file

@ -1,10 +0,0 @@
---
synopsis: HTTP proxy environment variables are now respected for S3 binary cache stores
issues: [fj#433]
cls: [1788]
category: Fixes
credits: jade
---
Due to "legacy reasons" (according to the AWS C++ SDK docs), the AWS SDK ignores system proxy configuration by default.
We turned it back on.

View file

@ -1,30 +0,0 @@
---
synopsis: Relative and tilde paths in configuration
issues: [fj#482]
cls: [1851, 1863, 1864]
category: Features
credits: [9999years]
---
[Configuration settings](@docroot@/command-ref/conf-file.md) can now refer to
files with paths relative to the file they're written in or relative to your
home directory (with `~/`).
This makes settings like
[`repl-overlays`](@docroot@/command-ref/conf-file.md#conf-repl-overlays) and
[`secret-key-files`](@docroot@/command-ref/conf-file.md#conf-repl-overlays)
much easier to set, especially if you'd like to refer to files in an existing
dotfiles repo cloned into your home directory.
If you put `repl-overlays = repl.nix` in your `~/.config/nix/nix.conf`, it'll
load `~/.config/nix/repl.nix`. Similarly, you can set `repl-overlays =
~/.dotfiles/repl.nix` to load a file relative to your home directory.
Configuration files can also
[`include`](@docroot@/command-ref/conf-file.md#file-format) paths relative to
your home directory.
Only user configuration files (like `$XDG_CONFIG_HOME/nix/nix.conf` or the
files listed in `$NIX_USER_CONF_FILES`) can use tilde paths relative to your
home directory. Configuration listed in the `$NIX_CONFIG` environment variable
may not use relative paths.

View file

@ -1,252 +0,0 @@
# Table of Contents
- [Introduction](introduction.md)
- [Quick Start](quick-start.md)
- [Installation](installation/installation.md)
- [Supported Platforms](installation/supported-platforms.md)
- [Installing a Binary Distribution](installation/installing-binary.md)
- [Installing Lix from Source](installation/installing-source.md)
- [Prerequisites](installation/prerequisites-source.md)
- [Obtaining a Source Distribution](installation/obtaining-source.md)
- [Building Lix from Source](installation/building-source.md)
- [Using Lix within Docker](installation/installing-docker.md)
- [Security](installation/nix-security.md)
- [Single-User Mode](installation/single-user.md)
- [Multi-User Mode](installation/multi-user.md)
- [Environment Variables](installation/env-variables.md)
- [Upgrading Lix](installation/upgrading.md)
- [Uninstalling Lix](installation/uninstall.md)
- [Package Management](package-management/package-management.md)
- [Basic Package Management](package-management/basic-package-mgmt.md)
- [Profiles](package-management/profiles.md)
- [Garbage Collection](package-management/garbage-collection.md)
- [Garbage Collector Roots](package-management/garbage-collector-roots.md)
- [Sharing Packages Between Machines](package-management/sharing-packages.md)
- [Serving a Nix store via HTTP](package-management/binary-cache-substituter.md)
- [Copying Closures via SSH](package-management/copy-closure.md)
- [Serving a Nix store via SSH](package-management/ssh-substituter.md)
- [Serving a Nix store via S3](package-management/s3-substituter.md)
- [Nix Language](language/index.md)
- [Data Types](language/values.md)
- [Language Constructs](language/constructs.md)
- [String interpolation](language/string-interpolation.md)
- [Operators](language/operators.md)
- [Derivations](language/derivations.md)
- [Advanced Attributes](language/advanced-attributes.md)
- [Built-in Constants](language/builtin-constants.md)
- [Built-in Functions](language/builtins.md)
- [Advanced Topics](advanced-topics/advanced-topics.md)
- [Remote Builds](advanced-topics/distributed-builds.md)
- [Tuning Cores and Jobs](advanced-topics/cores-vs-jobs.md)
- [Verifying Build Reproducibility](advanced-topics/diff-hook.md)
- [Using the `post-build-hook`](advanced-topics/post-build-hook.md)
- [Command Reference](command-ref/command-ref.md)
- [Common Options](command-ref/opt-common.md)
- [Common Environment Variables](command-ref/env-common.md)
- [Main Commands](command-ref/main-commands.md)
- [nix-build](command-ref/nix-build.md)
- [nix-shell](command-ref/nix-shell.md)
- [nix-store](command-ref/nix-store.md)
- [nix-store --add-fixed](command-ref/nix-store/add-fixed.md)
- [nix-store --add](command-ref/nix-store/add.md)
- [nix-store --delete](command-ref/nix-store/delete.md)
- [nix-store --dump-db](command-ref/nix-store/dump-db.md)
- [nix-store --dump](command-ref/nix-store/dump.md)
- [nix-store --export](command-ref/nix-store/export.md)
- [nix-store --gc](command-ref/nix-store/gc.md)
- [nix-store --generate-binary-cache-key](command-ref/nix-store/generate-binary-cache-key.md)
- [nix-store --import](command-ref/nix-store/import.md)
- [nix-store --load-db](command-ref/nix-store/load-db.md)
- [nix-store --optimise](command-ref/nix-store/optimise.md)
- [nix-store --print-env](command-ref/nix-store/print-env.md)
- [nix-store --query](command-ref/nix-store/query.md)
- [nix-store --read-log](command-ref/nix-store/read-log.md)
- [nix-store --realise](command-ref/nix-store/realise.md)
- [nix-store --repair-path](command-ref/nix-store/repair-path.md)
- [nix-store --restore](command-ref/nix-store/restore.md)
- [nix-store --serve](command-ref/nix-store/serve.md)
- [nix-store --verify-path](command-ref/nix-store/verify-path.md)
- [nix-store --verify](command-ref/nix-store/verify.md)
- [nix-env](command-ref/nix-env.md)
- [nix-env --delete-generations](command-ref/nix-env/delete-generations.md)
- [nix-env --install](command-ref/nix-env/install.md)
- [nix-env --list-generations](command-ref/nix-env/list-generations.md)
- [nix-env --query](command-ref/nix-env/query.md)
- [nix-env --rollback](command-ref/nix-env/rollback.md)
- [nix-env --set-flag](command-ref/nix-env/set-flag.md)
- [nix-env --set](command-ref/nix-env/set.md)
- [nix-env --switch-generation](command-ref/nix-env/switch-generation.md)
- [nix-env --switch-profile](command-ref/nix-env/switch-profile.md)
- [nix-env --uninstall](command-ref/nix-env/uninstall.md)
- [nix-env --upgrade](command-ref/nix-env/upgrade.md)
- [Utilities](command-ref/utilities.md)
- [nix-channel](command-ref/nix-channel.md)
- [nix-collect-garbage](command-ref/nix-collect-garbage.md)
- [nix-copy-closure](command-ref/nix-copy-closure.md)
- [nix-daemon](command-ref/nix-daemon.md)
- [nix-hash](command-ref/nix-hash.md)
- [nix-instantiate](command-ref/nix-instantiate.md)
- [nix-prefetch-url](command-ref/nix-prefetch-url.md)
- [Experimental Commands](command-ref/experimental-commands.md)
- [nix](command-ref/new-cli/nix.md)
- [nix build](command-ref/new-cli/nix3-build.md)
- [nix bundle](command-ref/new-cli/nix3-bundle.md)
- [nix config](command-ref/new-cli/nix3-config.md)
- [nix config show](command-ref/new-cli/nix3-config-show.md)
- [nix copy](command-ref/new-cli/nix3-copy.md)
- [nix daemon](command-ref/new-cli/nix3-daemon.md)
- [nix derivation](command-ref/new-cli/nix3-derivation.md)
- [nix derivation add](command-ref/new-cli/nix3-derivation-add.md)
- [nix derivation show](command-ref/new-cli/nix3-derivation-show.md)
- [nix develop](command-ref/new-cli/nix3-develop.md)
- [nix doctor](command-ref/new-cli/nix3-doctor.md)
- [nix edit](command-ref/new-cli/nix3-edit.md)
- [nix eval](command-ref/new-cli/nix3-eval.md)
- [nix flake](command-ref/new-cli/nix3-flake.md)
- [nix flake archive](command-ref/new-cli/nix3-flake-archive.md)
- [nix flake check](command-ref/new-cli/nix3-flake-check.md)
- [nix flake clone](command-ref/new-cli/nix3-flake-clone.md)
- [nix flake info](command-ref/new-cli/nix3-flake-info.md)
- [nix flake init](command-ref/new-cli/nix3-flake-init.md)
- [nix flake lock](command-ref/new-cli/nix3-flake-lock.md)
- [nix flake metadata](command-ref/new-cli/nix3-flake-metadata.md)
- [nix flake new](command-ref/new-cli/nix3-flake-new.md)
- [nix flake prefetch](command-ref/new-cli/nix3-flake-prefetch.md)
- [nix flake show](command-ref/new-cli/nix3-flake-show.md)
- [nix flake update](command-ref/new-cli/nix3-flake-update.md)
- [nix fmt](command-ref/new-cli/nix3-fmt.md)
- [nix hash](command-ref/new-cli/nix3-hash.md)
- [nix hash file](command-ref/new-cli/nix3-hash-file.md)
- [nix hash path](command-ref/new-cli/nix3-hash-path.md)
- [nix hash to-base16](command-ref/new-cli/nix3-hash-to-base16.md)
- [nix hash to-base32](command-ref/new-cli/nix3-hash-to-base32.md)
- [nix hash to-base64](command-ref/new-cli/nix3-hash-to-base64.md)
- [nix hash to-sri](command-ref/new-cli/nix3-hash-to-sri.md)
- [nix help](command-ref/new-cli/nix3-help.md)
- [nix help-stores](command-ref/new-cli/nix3-help-stores.md)
- [nix key](command-ref/new-cli/nix3-key.md)
- [nix key convert-secret-to-public](command-ref/new-cli/nix3-key-convert-secret-to-public.md)
- [nix key generate-secret](command-ref/new-cli/nix3-key-generate-secret.md)
- [nix log](command-ref/new-cli/nix3-log.md)
- [nix nar](command-ref/new-cli/nix3-nar.md)
- [nix nar cat](command-ref/new-cli/nix3-nar-cat.md)
- [nix nar dump-path](command-ref/new-cli/nix3-nar-dump-path.md)
- [nix nar ls](command-ref/new-cli/nix3-nar-ls.md)
- [nix path-info](command-ref/new-cli/nix3-path-info.md)
- [nix print-dev-env](command-ref/new-cli/nix3-print-dev-env.md)
- [nix profile](command-ref/new-cli/nix3-profile.md)
- [nix profile diff-closures](command-ref/new-cli/nix3-profile-diff-closures.md)
- [nix profile history](command-ref/new-cli/nix3-profile-history.md)
- [nix profile install](command-ref/new-cli/nix3-profile-install.md)
- [nix profile list](command-ref/new-cli/nix3-profile-list.md)
- [nix profile remove](command-ref/new-cli/nix3-profile-remove.md)
- [nix profile rollback](command-ref/new-cli/nix3-profile-rollback.md)
- [nix profile upgrade](command-ref/new-cli/nix3-profile-upgrade.md)
- [nix profile wipe-history](command-ref/new-cli/nix3-profile-wipe-history.md)
- [nix realisation](command-ref/new-cli/nix3-realisation.md)
- [nix realisation info](command-ref/new-cli/nix3-realisation-info.md)
- [nix registry](command-ref/new-cli/nix3-registry.md)
- [nix registry add](command-ref/new-cli/nix3-registry-add.md)
- [nix registry list](command-ref/new-cli/nix3-registry-list.md)
- [nix registry pin](command-ref/new-cli/nix3-registry-pin.md)
- [nix registry remove](command-ref/new-cli/nix3-registry-remove.md)
- [nix repl](command-ref/new-cli/nix3-repl.md)
- [nix run](command-ref/new-cli/nix3-run.md)
- [nix search](command-ref/new-cli/nix3-search.md)
- [nix shell](command-ref/new-cli/nix3-shell.md)
- [nix store](command-ref/new-cli/nix3-store.md)
- [nix store add-file](command-ref/new-cli/nix3-store-add-file.md)
- [nix store add-path](command-ref/new-cli/nix3-store-add-path.md)
- [nix store cat](command-ref/new-cli/nix3-store-cat.md)
- [nix store copy-log](command-ref/new-cli/nix3-store-copy-log.md)
- [nix store copy-sigs](command-ref/new-cli/nix3-store-copy-sigs.md)
- [nix store delete](command-ref/new-cli/nix3-store-delete.md)
- [nix store diff-closures](command-ref/new-cli/nix3-store-diff-closures.md)
- [nix store dump-path](command-ref/new-cli/nix3-store-dump-path.md)
- [nix store gc](command-ref/new-cli/nix3-store-gc.md)
- [nix store ls](command-ref/new-cli/nix3-store-ls.md)
- [nix store make-content-addressed](command-ref/new-cli/nix3-store-make-content-addressed.md)
- [nix store optimise](command-ref/new-cli/nix3-store-optimise.md)
- [nix store path-from-hash-part](command-ref/new-cli/nix3-store-path-from-hash-part.md)
- [nix store ping](command-ref/new-cli/nix3-store-ping.md)
- [nix store prefetch-file](command-ref/new-cli/nix3-store-prefetch-file.md)
- [nix store repair](command-ref/new-cli/nix3-store-repair.md)
- [nix store sign](command-ref/new-cli/nix3-store-sign.md)
- [nix store verify](command-ref/new-cli/nix3-store-verify.md)
- [nix upgrade-nix](command-ref/new-cli/nix3-upgrade-nix.md)
- [nix why-depends](command-ref/new-cli/nix3-why-depends.md)
- [Files](command-ref/files.md)
- [nix.conf](command-ref/conf-file.md)
- [Profiles](command-ref/files/profiles.md)
- [manifest.nix](command-ref/files/manifest.nix.md)
- [manifest.json](command-ref/files/manifest.json.md)
- [Channels](command-ref/files/channels.md)
- [Default Nix expression](command-ref/files/default-nix-expression.md)
- [Architecture and Design](architecture/architecture.md)
- [File System Object](architecture/file-system-object.md)
- [Protocols](protocols/protocols.md)
- [Serving Tarball Flakes](protocols/tarball-fetcher.md)
- [Derivation "ATerm" file format](protocols/derivation-aterm.md)
- [Glossary](glossary.md)
- [Contributing](contributing/contributing.md)
- [Hacking](contributing/hacking.md)
- [Testing](contributing/testing.md)
- [Experimental Features](contributing/experimental-features.md)
- [Deprecated Features](contributing/deprecated-features.md)
- [CLI guideline](contributing/cli-guideline.md)
- [C++ style guide](contributing/cxx.md)
- [Release Notes](release-notes/release-notes.md)
- [Upcoming release](release-notes/rl-next.md)
<!-- RELENG-AUTO-INSERTION-MARKER (see releng/release_notes.py) -->
- [Lix 2.91 (2024-08-12)](release-notes/rl-2.91.md)
- [Lix 2.90 (2024-07-10)](release-notes/rl-2.90.md)
- [Nix 2.18 (2023-09-20)](release-notes/rl-2.18.md)
- [Nix 2.17 (2023-07-24)](release-notes/rl-2.17.md)
- [Nix 2.16 (2023-05-31)](release-notes/rl-2.16.md)
- [Nix 2.15 (2023-04-11)](release-notes/rl-2.15.md)
- [Nix 2.14 (2023-02-28)](release-notes/rl-2.14.md)
- [Nix 2.13 (2023-01-17)](release-notes/rl-2.13.md)
- [Nix 2.12 (2022-12-06)](release-notes/rl-2.12.md)
- [Nix 2.11 (2022-08-25)](release-notes/rl-2.11.md)
- [Nix 2.10 (2022-07-11)](release-notes/rl-2.10.md)
- [Nix 2.9 (2022-05-30)](release-notes/rl-2.9.md)
- [Nix 2.8 (2022-04-19)](release-notes/rl-2.8.md)
- [Nix 2.7 (2022-03-07)](release-notes/rl-2.7.md)
- [Nix 2.6 (2022-01-24)](release-notes/rl-2.6.md)
- [Nix 2.5 (2021-12-13)](release-notes/rl-2.5.md)
- [Nix 2.4 (2021-11-01)](release-notes/rl-2.4.md)
- [Nix 2.3 (2019-09-04)](release-notes/rl-2.3.md)
- [Nix 2.2 (2019-01-11)](release-notes/rl-2.2.md)
- [Nix 2.1 (2018-09-02)](release-notes/rl-2.1.md)
- [Nix 2.0 (2018-02-22)](release-notes/rl-2.0.md)
- [Nix 1.11.10 (2017-06-12)](release-notes/rl-1.11.10.md)
- [Nix 1.11 (2016-01-19)](release-notes/rl-1.11.md)
- [Nix 1.10 (2015-09-03)](release-notes/rl-1.10.md)
- [Nix 1.9 (2015-06-12)](release-notes/rl-1.9.md)
- [Nix 1.8 (2014-12-14)](release-notes/rl-1.8.md)
- [Nix 1.7 (2014-04-11)](release-notes/rl-1.7.md)
- [Nix 1.6.1 (2013-10-28)](release-notes/rl-1.6.1.md)
- [Nix 1.6 (2013-09-10)](release-notes/rl-1.6.md)
- [Nix 1.5.2 (2013-05-13)](release-notes/rl-1.5.2.md)
- [Nix 1.5 (2013-02-27)](release-notes/rl-1.5.md)
- [Nix 1.4 (2013-02-26)](release-notes/rl-1.4.md)
- [Nix 1.3 (2013-01-04)](release-notes/rl-1.3.md)
- [Nix 1.2 (2012-12-06)](release-notes/rl-1.2.md)
- [Nix 1.1 (2012-07-18)](release-notes/rl-1.1.md)
- [Nix 1.0 (2012-05-11)](release-notes/rl-1.0.md)
- [Nix 0.16 (2010-08-17)](release-notes/rl-0.16.md)
- [Nix 0.15 (2010-03-17)](release-notes/rl-0.15.md)
- [Nix 0.14 (2010-02-04)](release-notes/rl-0.14.md)
- [Nix 0.13 (2009-11-05)](release-notes/rl-0.13.md)
- [Nix 0.12 (2008-11-20)](release-notes/rl-0.12.md)
- [Nix 0.11 (2007-12-31)](release-notes/rl-0.11.md)
- [Nix 0.10.1 (2006-10-11)](release-notes/rl-0.10.1.md)
- [Nix 0.10 (2006-10-06)](release-notes/rl-0.10.md)
- [Nix 0.9.2 (2005-09-21)](release-notes/rl-0.9.2.md)
- [Nix 0.9.1 (2005-09-20)](release-notes/rl-0.9.1.md)
- [Nix 0.9 (2005-09-16)](release-notes/rl-0.9.md)
- [Nix 0.8.1 (2005-04-13)](release-notes/rl-0.8.1.md)
- [Nix 0.8 (2005-04-11)](release-notes/rl-0.8.md)
- [Nix 0.7 (2005-01-12)](release-notes/rl-0.7.md)
- [Nix 0.6 (2004-11-14)](release-notes/rl-0.6.md)
- [Nix 0.5 and earlier](release-notes/rl-0.5.md)

View file

@ -1,29 +0,0 @@
# redirect rules for paths (server-side) to prevent link rot.
# see ./redirects.js for redirects based on URL fragments (client-side)
#
# concrete user story this supports:
# - user finds URL to the manual for Nix x.y
# - Nix x.z (z > y) is the most recent release
# - updating the version in the URL will show the right thing
#
# format documentation:
# - https://docs.netlify.com/routing/redirects/#syntax-for-the-redirects-file
# - https://docs.netlify.com/routing/redirects/redirect-options/
#
# conventions:
# - always force (<CODE>!) since this allows re-using file names
# - group related paths to ease readability
# - always append new redirects to the end of the file
# - redirects that should have been there but are missing can be inserted where they belong
/expressions/expression-language /language/ 301!
/expressions/language-values /language/values 301!
/expressions/language-constructs /language/constructs 301!
/expressions/language-operators /language/operators 301!
/expressions/* /language/:splat 301!
/package-management/basic-package-mgmt /command-ref/nix-env 301!
/package-management/channels* /command-ref/nix-channel 301!
/package-management/s3-substituter* /command-ref/new-cli/nix3-help-stores#s3-binary-cache-store 301!

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@ -1 +0,0 @@
This section lists advanced topics related to builds and builds performance

View file

@ -1,39 +0,0 @@
# Tuning Cores and Jobs
Lix has two relevant settings with regards to how your CPU cores will
be utilized: `cores` and `max-jobs`. This chapter will talk about what
they are, how they interact, and their configuration trade-offs.
- `max-jobs`\
Dictates how many separate derivations will be built at the same
time. If you set this to zero, the local machine will do no
builds. Lix will still substitute from binary caches, and build
remotely if remote builders are configured.
- `cores`\
Suggests how many cores each derivation should use. Similar to
`make -j`.
The `cores` setting determines the value of
`NIX_BUILD_CORES`. `NIX_BUILD_CORES` is equal to `cores`, unless
`cores` equals `0`, in which case `NIX_BUILD_CORES` will be the total
number of cores in the system.
The maximum number of consumed cores is a simple multiplication,
`max-jobs` \* `NIX_BUILD_CORES`.
The balance on how to set these two independent variables depends upon
each builder's workload and hardware. Here are a few example scenarios
on a machine with 24 cores:
| `max-jobs` | `cores` | `NIX_BUILD_CORES` | Maximum Processes | Result |
| --------------------- | ------------------ | ----------------- | ----------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 1 | 24 | 24 | 24 | One derivation will be built at a time, each one can use 24 cores. Undersold if a job cant use 24 cores. |
| 4 | 6 | 6 | 24 | Four derivations will be built at once, each given access to six cores. |
| 12 | 6 | 6 | 72 | 12 derivations will be built at once, each given access to six cores. This configuration is over-sold. If all 12 derivations being built simultaneously try to use all six cores, the machine's performance will be degraded due to extensive context switching between the 12 builds. |
| 24 | 1 | 1 | 24 | 24 derivations can build at the same time, each using a single core. Never oversold, but derivations which require many cores will be very slow to compile. |
| 24 | 0 | 24 | 576 | 24 derivations can build at the same time, each using all the available cores of the machine. Very likely to be oversold, and very likely to suffer context switches. |
It is up to the derivations' build script to respect host's requested
cores-per-build by following the value of the `NIX_BUILD_CORES`
environment variable.

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@ -1,123 +0,0 @@
# Verifying Build Reproducibility
You can use Lix's `diff-hook` setting to compare build results. Note
that this hook is only executed if the results differ; it is not used
for determining if the results are the same.
For purposes of demonstration, we'll use the following Nix file,
`deterministic.nix` for testing:
```nix
let
inherit (import <nixpkgs> {}) runCommand;
in {
stable = runCommand "stable" {} ''
touch $out
'';
unstable = runCommand "unstable" {} ''
echo $RANDOM > $out
'';
}
```
Additionally, `nix.conf` contains:
diff-hook = /etc/nix/my-diff-hook
run-diff-hook = true
where `/etc/nix/my-diff-hook` is an executable file containing:
```bash
#!/bin/sh
exec >&2
echo "For derivation $3:"
/run/current-system/sw/bin/diff -r "$1" "$2"
```
The diff hook is executed by the same user and group who ran the build.
However, the diff hook does not have write access to the store path just
built.
# Spot-Checking Build Determinism
Verify a path which already exists in the Nix store by passing `--check`
to the build command.
If the build passes and is deterministic, Lix will exit with a status
code of 0:
```console
$ nix-build ./deterministic.nix --attr stable
this derivation will be built:
/nix/store/z98fasz2jqy9gs0xbvdj939p27jwda38-stable.drv
building '/nix/store/z98fasz2jqy9gs0xbvdj939p27jwda38-stable.drv'...
/nix/store/yyxlzw3vqaas7wfp04g0b1xg51f2czgq-stable
$ nix-build ./deterministic.nix --attr stable --check
checking outputs of '/nix/store/z98fasz2jqy9gs0xbvdj939p27jwda38-stable.drv'...
/nix/store/yyxlzw3vqaas7wfp04g0b1xg51f2czgq-stable
```
If the build is not deterministic, Lix will exit with a status code of
1:
```console
$ nix-build ./deterministic.nix --attr unstable
this derivation will be built:
/nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv
building '/nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv'...
/nix/store/krpqk0l9ib0ibi1d2w52z293zw455cap-unstable
$ nix-build ./deterministic.nix --attr unstable --check
checking outputs of '/nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv'...
error: derivation '/nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv' may
not be deterministic: output '/nix/store/krpqk0l9ib0ibi1d2w52z293zw455cap-unstable' differs
```
In the Lix daemon's log, we will now see:
```
For derivation /nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv:
1c1
< 8108
---
> 30204
```
Using `--check` with `--keep-failed` will cause Lix to keep the second
build's output in a special, `.check` path:
```console
$ nix-build ./deterministic.nix --attr unstable --check --keep-failed
checking outputs of '/nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv'...
note: keeping build directory '/tmp/nix-build-unstable.drv-0'
error: derivation '/nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv' may
not be deterministic: output '/nix/store/krpqk0l9ib0ibi1d2w52z293zw455cap-unstable' differs
from '/nix/store/krpqk0l9ib0ibi1d2w52z293zw455cap-unstable.check'
```
In particular, notice the
`/nix/store/krpqk0l9ib0ibi1d2w52z293zw455cap-unstable.check` output. Lix
has copied the build results to that directory where you can examine it.
> []{#check-dirs-are-unregistered} **Note**
>
> Check paths are not protected against garbage collection, and this
> path will be deleted on the next garbage collection.
>
> The path is guaranteed to be alive for the duration of
> the `diff-hook`'s execution, but may be deleted any time after.
>
> If the comparison is performed as part of automated tooling, please
> use the diff-hook or author your tooling to handle the case where the
> build was not deterministic and also a check path does not exist.
`--check` is only usable if the derivation has been built on the system
already. If the derivation has not been built Lix will fail with the
error:
error: some outputs of '/nix/store/hzi1h60z2qf0nb85iwnpvrai3j2w7rr6-unstable.drv'
are not valid, so checking is not possible
Run the build without `--check`, and then try with `--check` again.

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@ -1,159 +0,0 @@
# Remote Builds
Lix supports remote builds, where a local Lix installation can forward
Nix builds to other machines. This allows multiple builds to be
performed in parallel and allows Lix to perform multi-platform builds in
a semi-transparent way. For instance, if you perform a build for a
`x86_64-darwin` on an `i686-linux` machine, Lix can automatically
forward the build to a `x86_64-darwin` machine, if available.
To forward a build to a remote machine, its required that the remote
machine is accessible via SSH and that it has Nix installed. You can
test whether connecting to the remote Nix instance works, e.g.
```console
$ nix store ping --store ssh://mac
```
will try to connect to the machine named `mac`. It is possible to
specify an SSH identity file as part of the remote store URI, e.g.
```console
$ nix store ping --store ssh://mac?ssh-key=/home/alice/my-key
```
Since builds should be non-interactive, the key should not have a
passphrase. Alternatively, you can load identities ahead of time into
`ssh-agent` or `gpg-agent`.
If you get the error
```console
bash: nix-store: command not found
error: cannot connect to 'mac'
```
then you need to ensure that the `PATH` of non-interactive login shells
contains Nix.
> **Warning**
>
> If you are building via the Lix daemon (default on Linux and macOS), it is the Lix daemon user account (that is, `root`) that should have SSH access to a user (not necessarily `root`) on the remote machine.
>
> Furthermore, `root` needs to have the public host keys for the remote system in its `.ssh/known_hosts`.
> To add them to `known_hosts` for root, do `ssh-keyscan USER@HOST | sudo tee -a ~root/.ssh/known_hosts`.
>
> If you cant or dont want to configure `root` to be able to access the remote machine, you can use a private Nix store instead by passing e.g. `--store ~/my-nix` when running a Nix command from the local machine.
The list of remote machines can be specified on the command line or in
the Lix configuration file. The former is convenient for testing. For
example, the following command allows you to build a derivation for
`x86_64-darwin` on a Linux machine:
```console
$ uname
Linux
$ nix build --impure \
--expr '(with import <nixpkgs> { system = "x86_64-darwin"; }; runCommand "foo" {} "uname > $out")' \
--builders 'ssh://mac x86_64-darwin'
[1/0/1 built, 0.0 MiB DL] building foo on ssh://mac
$ cat ./result
Darwin
```
It is possible to specify multiple builders separated by a semicolon or
a newline, e.g.
```console
--builders 'ssh://mac x86_64-darwin ; ssh://beastie x86_64-freebsd'
```
Each machine specification consists of the following elements, separated
by spaces. Only the first element is required. To leave a field at its
default, set it to `-`.
1. The URI of the remote store in the format
`ssh://[username@]hostname`, e.g. `ssh://nix@mac` or `ssh://mac`.
For backward compatibility, `ssh://` may be omitted. The hostname
may be an alias defined in your `~/.ssh/config`.
2. A comma-separated list of Nix platform type identifiers, such as
`x86_64-darwin`. It is possible for a machine to support multiple
platform types, e.g., `i686-linux,x86_64-linux`. If omitted, this
defaults to the local platform type.
3. The SSH identity file to be used to log in to the remote machine. If
omitted, SSH will use its regular identities.
4. The maximum number of builds that Lix will execute in parallel on
the machine. Typically this should be equal to the number of CPU
cores. For instance, the machine `itchy` in the example will execute
up to 8 builds in parallel.
5. The “speed factor”, indicating the relative speed of the machine. If
there are multiple machines of the right type, Lix will prefer the
fastest, taking load into account.
6. A comma-separated list of *supported features*. If a derivation has
the `requiredSystemFeatures` attribute, then Lix will only perform
the derivation on a machine that has the specified features. For
instance, the attribute
```nix
requiredSystemFeatures = [ "kvm" ];
```
will cause the build to be performed on a machine that has the `kvm`
feature.
7. A comma-separated list of *mandatory features*. A machine will only
be used to build a derivation if all of the machines mandatory
features appear in the derivations `requiredSystemFeatures`
attribute.
8. The (base64-encoded) public host key of the remote machine. If omitted, SSH
will use its regular known-hosts file. Specifically, the field is calculated
via `base64 -w0 /etc/ssh/ssh_host_ed25519_key.pub`.
For example, the machine specification
nix@scratchy.labs.cs.uu.nl i686-linux /home/nix/.ssh/id_scratchy_auto 8 1 kvm
nix@itchy.labs.cs.uu.nl i686-linux /home/nix/.ssh/id_scratchy_auto 8 2
nix@poochie.labs.cs.uu.nl i686-linux /home/nix/.ssh/id_scratchy_auto 1 2 kvm benchmark
specifies several machines that can perform `i686-linux` builds.
However, `poochie` will only do builds that have the attribute
```nix
requiredSystemFeatures = [ "benchmark" ];
```
or
```nix
requiredSystemFeatures = [ "benchmark" "kvm" ];
```
`itchy` cannot do builds that require `kvm`, but `scratchy` does support
such builds. For regular builds, `itchy` will be preferred over
`scratchy` because it has a higher speed factor.
Remote builders can also be configured in `nix.conf`, e.g.
builders = ssh://mac x86_64-darwin ; ssh://beastie x86_64-freebsd
Finally, remote builders can be configured in a separate configuration
file included in `builders` via the syntax `@file`. For example,
builders = @/etc/nix/machines
causes the list of machines in `/etc/nix/machines` to be included. (This
is the default.)
If you want the builders to use caches, you likely want to set the
option `builders-use-substitutes` in your local `nix.conf`.
To build only on remote builders and disable building on the local
machine, you can use the option `--max-jobs 0`.

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@ -1,126 +0,0 @@
# Using the `post-build-hook`
# Implementation Caveats
Here we use the post-build hook to upload to a binary cache. This is a
simple and working example, but it is not suitable for all use cases.
The post build hook program runs after each executed build, and blocks
the build loop. The build loop exits if the hook program fails.
Concretely, this implementation will make Lix slow or unusable when the
internet is slow or unreliable.
A more advanced implementation might pass the store paths to a
user-supplied daemon or queue for processing the store paths outside of
the build loop.
# Prerequisites
This tutorial assumes you have [configured an S3-compatible binary
cache](../package-management/s3-substituter.md), and that the `root`
user's default AWS profile can upload to the bucket.
# Set up a Signing Key
Use `nix-store --generate-binary-cache-key` to create our public and
private signing keys. We will sign paths with the private key, and
distribute the public key for verifying the authenticity of the paths.
```console
# nix-store --generate-binary-cache-key example-nix-cache-1 /etc/nix/key.private /etc/nix/key.public
# cat /etc/nix/key.public
example-nix-cache-1:1/cKDz3QCCOmwcztD2eV6Coggp6rqc9DGjWv7C0G+rM=
```
Then update [`nix.conf`](../command-ref/conf-file.md) on any machine that will access the cache.
Add the cache URL to [`substituters`](../command-ref/conf-file.md#conf-substituters) and the public key to [`trusted-public-keys`](../command-ref/conf-file.md#conf-trusted-public-keys):
substituters = https://cache.nixos.org/ s3://example-nix-cache
trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= example-nix-cache-1:1/cKDz3QCCOmwcztD2eV6Coggp6rqc9DGjWv7C0G+rM=
Machines that build for the cache must sign derivations using the private key.
On those machines, add the path to the key file to the [`secret-key-files`](../command-ref/conf-file.md#conf-secret-key-files) field in their [`nix.conf`](../command-ref/conf-file.md):
secret-key-files = /etc/nix/key.private
We will restart the Nix daemon in a later step.
# Implementing the build hook
Write the following script to `/etc/nix/upload-to-cache.sh`:
```bash
#!/bin/sh
set -eu
set -f # disable globbing
export IFS=' '
echo "Uploading paths" $OUT_PATHS
exec nix copy --to "s3://example-nix-cache" $OUT_PATHS
```
> **Note**
>
> The `$OUT_PATHS` variable is a space-separated list of Nix store
> paths. In this case, we expect and want the shell to perform word
> splitting to make each output path its own argument to `nix
> store sign`. Nix guarantees the paths will not contain any spaces,
> however a store path might contain glob characters. The `set -f`
> disables globbing in the shell.
Then make sure the hook program is executable by the `root` user:
```console
# chmod +x /etc/nix/upload-to-cache.sh
```
# Updating Lix Configuration
Edit `/etc/nix/nix.conf` to run our hook, by adding the following
configuration snippet at the end:
post-build-hook = /etc/nix/upload-to-cache.sh
Then, restart the `nix-daemon`.
# Testing
Build any derivation, for example:
```console
$ nix-build --expr '(import <nixpkgs> {}).writeText "example" (builtins.toString builtins.currentTime)'
this derivation will be built:
/nix/store/s4pnfbkalzy5qz57qs6yybna8wylkig6-example.drv
building '/nix/store/s4pnfbkalzy5qz57qs6yybna8wylkig6-example.drv'...
running post-build-hook '/home/grahamc/projects/github.com/NixOS/nix/post-hook.sh'...
post-build-hook: Signing paths /nix/store/ibcyipq5gf91838ldx40mjsp0b8w9n18-example
post-build-hook: Uploading paths /nix/store/ibcyipq5gf91838ldx40mjsp0b8w9n18-example
/nix/store/ibcyipq5gf91838ldx40mjsp0b8w9n18-example
```
Then delete the path from the store, and try substituting it from the
binary cache:
```console
$ rm ./result
$ nix-store --delete /nix/store/ibcyipq5gf91838ldx40mjsp0b8w9n18-example
```
Now, copy the path back from the cache:
```console
$ nix-store --realise /nix/store/ibcyipq5gf91838ldx40mjsp0b8w9n18-example
copying path '/nix/store/m8bmqwrch6l3h8s0k3d673xpmipcdpsa-example from 's3://example-nix-cache'...
warning: you did not specify '--add-root'; the result might be removed by the garbage collector
/nix/store/m8bmqwrch6l3h8s0k3d673xpmipcdpsa-example
```
# Conclusion
We now have a Lix installation configured to automatically sign and
upload every local build to a remote binary cache.
Before deploying this to production, be sure to consider the
[implementation caveats](#implementation-caveats).

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@ -1,114 +0,0 @@
# Architecture
This chapter describes how Nix works.
It should help users understand why Lix behaves as it does, and it should help developers understand how to modify Lix and how to write similar tools.
## Overview
Nix consists of [hierarchical layers].
[hierarchical layers]: https://en.wikipedia.org/wiki/Multitier_architecture#Layers
The following [concept map] shows its main components (rectangles), the objects they operate on (rounded rectangles), and their interactions (connecting phrases):
[concept map]: https://en.wikipedia.org/wiki/Concept_map
```
.----------------.
| Nix expression |----------.
'----------------' |
| passed to
| |
+----------|-------------------|--------------------------------+
| Nix impl.| V |
| (Lix) | +-------------------------+ |
| | | commmand line interface |------. |
| | +-------------------------+ | |
| | | | |
| evaluated by calls manages |
| | | | |
| | V | |
| | +--------------------+ | |
| '-------->| language evaluator | | |
| +--------------------+ | |
| | | |
| produces | |
| | V |
| +----------------------------|------------------------------+ |
| | store | | |
| | referenced by V builds | |
| | .-------------. .------------. .--------------. | |
| | | build input |----->| build plan |----->| build result | | |
| | '-------------' '------------' '--------------' | |
| +-------------------------------------------------|---------+ |
+---------------------------------------------------|-----------+
|
represented as
|
V
.---------------.
| file |
'---------------'
```
At the top is the [command line interface](../command-ref/command-ref.md) that drives the underlying layers.
The [Nix language](../language/index.md) evaluator transforms Nix expressions into self-contained *build plans*, which are used to derive *build results* from referenced *build inputs*.
The command line interface and Nix expressions are what users deal with most.
> **Note**
> The Nix language itself does not have a notion of *packages* or *configurations*.
> As far as we are concerned here, the inputs and results of a build plan are just data.
Underlying the command line interface and the Nix language evaluator is the [Nix store](../glossary.md#gloss-store), a mechanism to keep track of build plans, data, and references between them.
It can also execute build plans to produce new data, which are made available to the operating system as files.
A build plan itself is a series of *build tasks*, together with their build inputs.
> **Important**
> A build task in Nix is called [derivation](../glossary.md#gloss-derivation).
Each build task has a special build input executed as *build instructions* in order to perform the build.
The result of a build task can be input to another build task.
The following [data flow diagram] shows a build plan for illustration.
Build inputs used as instructions to a build task are marked accordingly:
[data flow diagram]: https://en.wikipedia.org/wiki/Data-flow_diagram
```
+--------------------------------------------------------------------+
| build plan |
| |
| .-------------. |
| | build input |---------. |
| '-------------' | |
| instructions |
| | |
| v |
| .-------------. .----------. |
| | build input |-->( build task )-------. |
| '-------------' '----------' | |
| instructions |
| | |
| v |
| .-------------. .----------. .--------------. |
| | build input |---------. ( build task )--->| build result | |
| '-------------' | '----------' '--------------' |
| instructions ^ |
| | | |
| v | |
| .-------------. .----------. | |
| | build input |-->( build task )-------' |
| '-------------' '----------' |
| ^ |
| | |
| | |
| .-------------. | |
| | build input |---------' |
| '-------------' |
| |
+--------------------------------------------------------------------+
```

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@ -1,64 +0,0 @@
# File System Object
Nix implementations use a simplified model of the file system, which consists of file system objects.
Every file system object is one of the following:
- File
- A possibly empty sequence of bytes for contents
- A single boolean representing the [executable](https://en.m.wikipedia.org/wiki/File-system_permissions#Permissions) permission
- Directory
Mapping of names to child file system objects
- [Symbolic link](https://en.m.wikipedia.org/wiki/Symbolic_link)
An arbitrary string.
Nix implementations do not assign any semantics to symbolic links.
File system objects and their children form a tree.
A bare file or symlink can be a root file system object.
Nix does not encode any other file system notions such as [hard links](https://en.m.wikipedia.org/wiki/Hard_link), [permissions](https://en.m.wikipedia.org/wiki/File-system_permissions), timestamps, or other metadata.
## Examples of file system objects
A plain file:
```
50 B, executable: false
```
An executable file:
```
122 KB, executable: true
```
A symlink:
```
-> /usr/bin/sh
```
A directory with contents:
```
├── bin
│   └── hello: 35 KB, executable: true
└── share
├── info
│   └── hello.info: 36 KB, executable: false
└── man
└── man1
└── hello.1.gz: 790 B, executable: false
```
A directory that contains a symlink and other directories:
```
├── bin -> share/go/bin
├── nix-support/
└── share/
```

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@ -1,2 +0,0 @@
This section lists commands and options that you can use when you work
with Lix.

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@ -1,71 +0,0 @@
# Name
`nix.conf` - Lix configuration file
# Description
Lix supports a variety of configuration settings, which are read from configuration files or taken as command line flags.
## Configuration file
By default Lix reads settings from the following places, in that order:
1. The system-wide configuration file `sysconfdir/nix/nix.conf` (i.e. `/etc/nix/nix.conf` on most systems), or `$NIX_CONF_DIR/nix.conf` if [`NIX_CONF_DIR`](./env-common.md#env-NIX_CONF_DIR) is set.
Values loaded in this file are not forwarded to the Nix daemon.
The client assumes that the daemon has already loaded them.
1. If [`NIX_USER_CONF_FILES`](./env-common.md#env-NIX_USER_CONF_FILES) is set, then each path separated by `:` will be loaded in reverse order.
Otherwise it will look for `nix/nix.conf` files in `XDG_CONFIG_DIRS` and `XDG_CONFIG_HOME`.
If unset, `XDG_CONFIG_DIRS` defaults to `/etc/xdg`, and `XDG_CONFIG_HOME` defaults to `$HOME/.config` as per [XDG Base Directory Specification](https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html).
1. If [`NIX_CONFIG`](./env-common.md#env-NIX_CONFIG) is set, its contents are treated as the contents of a configuration file.
### File format
Configuration files consist of `name = value` pairs, one per line.
Comments start with a `#` character.
Example:
```
keep-outputs = true # Nice for developers
keep-derivations = true # Idem
```
Other files can be included with a line like `include <path>`, where `<path>` is interpreted relative to the current configuration file.
A missing file is an error unless `!include` is used instead.
A configuration setting usually overrides any previous value.
However, for settings that take a list of items, you can prefix the name of the setting by `extra-` to *append* to the previous value.
For instance,
```
substituters = a b
extra-substituters = c d
```
defines the `substituters` setting to be `a b c d`.
Unknown option names are not an error, and are simply ignored with a warning.
## Command line flags
Configuration options can be set on the command line, overriding the values set in the [configuration file](#configuration-file):
- Every configuration setting has corresponding command line flag (e.g. `--max-jobs 16`).
Boolean settings do not need an argument, and can be explicitly disabled with the `no-` prefix (e.g. `--keep-failed` and `--no-keep-failed`).
Unknown option names are invalid flags (unless there is already a flag with that name), and are rejected with an error.
- The flag `--option <name> <value>` is interpreted exactly like a `<name> = <value>` in a setting file.
Unknown option names are ignored with a warning.
The `extra-` prefix is supported for settings that take a list of items (e.g. `--extra-trusted users alice` or `--option extra-trusted-users alice`).
# Available settings
{{#include @generated@/command-ref/conf-file.md}}

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@ -1,124 +0,0 @@
# Common Environment Variables
Most commands in Lix interpret the following environment variables:
- <span id="env-IN_NIX_SHELL">[`IN_NIX_SHELL`](#env-IN_NIX_SHELL)</span>\
Indicator that tells if the current environment was set up by
`nix-shell`. It can have the values `pure` or `impure`.
- <span id="env-NIX_PATH">[`NIX_PATH`](#env-NIX_PATH)</span>\
A colon-separated list of directories used to look up the location of Nix
expressions using [paths](@docroot@/language/values.md#type-path)
enclosed in angle brackets (i.e., `<path>`),
e.g. `/home/eelco/Dev:/etc/nixos`. It can be extended using the
[`-I` option](@docroot@/command-ref/opt-common.md#opt-I).
If `NIX_PATH` is not set at all, Lix will fall back to the following list in [impure](@docroot@/command-ref/conf-file.md#conf-pure-eval) and [unrestricted](@docroot@/command-ref/conf-file.md#conf-restrict-eval) evaluation mode:
1. `$HOME/.nix-defexpr/channels`
2. `nixpkgs=/nix/var/nix/profiles/per-user/root/channels/nixpkgs`
3. `/nix/var/nix/profiles/per-user/root/channels`
If `NIX_PATH` is set to an empty string, resolving search paths will always fail.
For example, attempting to use `<nixpkgs>` will produce:
error: file 'nixpkgs' was not found in the Nix search path
- <span id="env-NIX_IGNORE_SYMLINK_STORE">[`NIX_IGNORE_SYMLINK_STORE`](#env-NIX_IGNORE_SYMLINK_STORE)</span>\
Normally, the Nix store directory (typically `/nix/store`) is not
allowed to contain any symlink components. This is to prevent
“impure” builds. Builders sometimes “canonicalise” paths by
resolving all symlink components. Thus, builds on different machines
(with `/nix/store` resolving to different locations) could yield
different results. This is generally not a problem, except when
builds are deployed to machines where `/nix/store` resolves
differently. If you are sure that youre not going to do that, you
can set `NIX_IGNORE_SYMLINK_STORE` to `1`.
Note that if youre symlinking the Nix store so that you can put it
on another file system than the root file system, on Linux youre
better off using `bind` mount points, e.g.,
```console
$ mkdir /nix
$ mount -o bind /mnt/otherdisk/nix /nix
```
Consult the mount 8 manual page for details.
- <span id="env-NIX_STORE_DIR">[`NIX_STORE_DIR`](#env-NIX_STORE_DIR)</span>\
Overrides the location of the Nix store (default `prefix/store`).
- <span id="env-NIX_DATA_DIR">[`NIX_DATA_DIR`](#env-NIX_DATA_DIR)</span>\
Overrides the location of the Lix static data directory (default
`prefix/share`).
- <span id="env-NIX_LOG_DIR">[`NIX_LOG_DIR`](#env-NIX_LOG_DIR)</span>\
Overrides the location of the Lix log directory (default
`prefix/var/log/nix`).
- <span id="env-NIX_STATE_DIR">[`NIX_STATE_DIR`](#env-NIX_STATE_DIR)</span>\
Overrides the location of the Lix state directory (default
`prefix/var/nix`).
- <span id="env-NIX_CONF_DIR">[`NIX_CONF_DIR`](#env-NIX_CONF_DIR)</span>\
Overrides the location of the system Lix configuration directory
(default `prefix/etc/nix`).
- <span id="env-NIX_CONFIG">[`NIX_CONFIG`](#env-NIX_CONFIG)</span>\
Applies settings from Lix configuration from the environment.
The content is treated as if it was read from a Lix configuration file.
Settings are separated by the newline character.
- <span id="env-NIX_USER_CONF_FILES">[`NIX_USER_CONF_FILES`](#env-NIX_USER_CONF_FILES)</span>\
Overrides the location of the Lix user configuration files to load from.
The default are the locations according to the [XDG Base Directory Specification].
See the [XDG Base Directories](#xdg-base-directories) sub-section for details.
The variable is treated as a list separated by the `:` token.
- <span id="env-TMPDIR">[`TMPDIR`](#env-TMPDIR)</span>\
Use the specified directory to store temporary files. In particular,
this includes temporary build directories; these can take up
substantial amounts of disk space. The default is `/tmp`.
- <span id="env-NIX_REMOTE">[`NIX_REMOTE`](#env-NIX_REMOTE)</span>\
This variable should be set to `daemon` if you want to use the Lix
daemon to execute Nix operations. This is necessary in [multi-user
Nix installations](@docroot@/installation/multi-user.md). If the Lix
daemon's Unix socket is at some non-standard path, this variable
should be set to `unix://path/to/socket`. Otherwise, it should be
left unset.
- <span id="env-NIX_SHOW_STATS">[`NIX_SHOW_STATS`](#env-NIX_SHOW_STATS)</span>\
If set to `1`, Lix will print some evaluation statistics, such as
the number of values allocated.
- <span id="env-NIX_COUNT_CALLS">[`NIX_COUNT_CALLS`](#env-NIX_COUNT_CALLS)</span>\
If set to `1`, Lix will print how often functions were called during
Nix expression evaluation. This is useful for profiling your Nix
expressions.
- <span id="env-GC_INITIAL_HEAP_SIZE">[`GC_INITIAL_HEAP_SIZE`](#env-GC_INITIAL_HEAP_SIZE)</span>\
If Nix has been configured to use the Boehm garbage collector, this
variable sets the initial size of the heap in bytes. It defaults to
384 MiB. Setting it to a low value reduces memory consumption, but
will increase runtime due to the overhead of garbage collection.
## XDG Base Directories
Lix follows the [XDG Base Directory Specification].
For backwards compatibility, commands in Lix will follow the standard only when [`use-xdg-base-directories`] is enabled.
[New Nix commands](@docroot@/command-ref/new-cli/nix.md) (experimental) conform to the standard by default.
The following environment variables are used to determine locations of various state and configuration files:
- `XDG_CONFIG_HOME` (default `~/.config`)
- `XDG_STATE_HOME` (default `~/.local/state`)
- `XDG_CACHE_HOME` (default `~/.cache`)
[XDG Base Directory Specification]: https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
[`use-xdg-base-directories`]: @docroot@/command-ref/conf-file.md#conf-use-xdg-base-directories

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# Experimental Commands
This section lists [experimental commands](@docroot@/contributing/experimental-features.md#xp-feature-nix-command).
> **Warning**
>
> These commands may be removed in the future, or their syntax may
> change in incompatible ways.

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# Files
This section lists configuration files that you can use when you work
with Lix.

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@ -1,26 +0,0 @@
## Channels
A directory containing symlinks to Nix channels, managed by [`nix-channel`]:
- `$XDG_STATE_HOME/nix/profiles/channels` for regular users
- `$NIX_STATE_DIR/profiles/per-user/root/channels` for `root`
[`nix-channel`] uses a [profile](@docroot@/command-ref/files/profiles.md) to store channels.
This profile contains symlinks to the contents of those channels.
## Subscribed channels
The list of subscribed channels is stored in
- `~/.nix-channels`
- `$XDG_STATE_HOME/nix/channels` if [`use-xdg-base-directories`] is set to `true`
in the following format:
```
<url> <name>
...
```
[`nix-channel`]: @docroot@/command-ref/nix-channel.md
[`use-xdg-base-directories`]: @docroot@/command-ref/conf-file.md#conf-use-xdg-base-directories

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@ -1,52 +0,0 @@
## Default Nix expression
The source for the default [Nix expressions](@docroot@/language/index.md) used by [`nix-env`]:
- `~/.nix-defexpr`
- `$XDG_STATE_HOME/nix/defexpr` if [`use-xdg-base-directories`] is set to `true`.
It is loaded as follows:
- If the default expression is a file, it is loaded as a Nix expression.
- If the default expression is a directory containing a `default.nix` file, that `default.nix` file is loaded as a Nix expression.
- If the default expression is a directory without a `default.nix` file, then its contents (both files and subdirectories) are loaded as Nix expressions.
The expressions are combined into a single attribute set, each expression under an attribute with the same name as the original file or subdirectory.
Subdirectories without a `default.nix` file are traversed recursively in search of more Nix expressions, but the names of these intermediate directories are not added to the attribute paths of the default Nix expression.
Then, the resulting expression is interpreted like this:
- If the expression is an attribute set, it is used as the default Nix expression.
- If the expression is a function, an empty set is passed as argument and the return value is used as the default Nix expression.
For example, if the default expression contains two files, `foo.nix` and `bar.nix`, then the default Nix expression will be equivalent to
```nix
{
foo = import ~/.nix-defexpr/foo.nix;
bar = import ~/.nix-defexpr/bar.nix;
}
```
The file [`manifest.nix`](@docroot@/command-ref/files/manifest.nix.md) is always ignored.
The command [`nix-channel`] places a symlink to the user's current [channels profile](@docroot@/command-ref/files/channels.md) in this directory.
This makes all subscribed channels available as attributes in the default expression.
## User channel link
A symlink that ensures that [`nix-env`] can find your channels:
- `~/.nix-defexpr/channels`
- `$XDG_STATE_HOME/defexpr/channels` if [`use-xdg-base-directories`] is set to `true`.
This symlink points to:
- `$XDG_STATE_HOME/profiles/channels` for regular users
- `$NIX_STATE_DIR/profiles/per-user/root/channels` for `root`
In a multi-user installation, you may also have `~/.nix-defexpr/channels_root`, which links to the channels of the root user.[`nix-env`]: ../nix-env.md
[`nix-env`]: @docroot@/command-ref/nix-env.md
[`nix-channel`]: @docroot@/command-ref/nix-channel.md
[`use-xdg-base-directories`]: @docroot@/command-ref/conf-file.md#conf-use-xdg-base-directories

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## `manifest.json`
The manifest file records the provenance of the packages that are installed in a [profile](./profiles.md) managed by [`nix profile`](@docroot@/command-ref/new-cli/nix3-profile.md) (experimental).
Here is an example of what the file might look like after installing `zoom-us` from Nixpkgs:
```json
{
"version": 1,
"elements": [
{
"active": true,
"attrPath": "legacyPackages.x86_64-linux.zoom-us",
"originalUrl": "flake:nixpkgs",
"storePaths": [
"/nix/store/wbhg2ga8f3h87s9h5k0slxk0m81m4cxl-zoom-us-5.3.469451.0927"
],
"uri": "github:NixOS/nixpkgs/13d0c311e3ae923a00f734b43fd1d35b47d8943a"
},
]
}
```
Each object in the array `elements` denotes an installed package and
has the following fields:
* `originalUrl`: The [flake reference](@docroot@/command-ref/new-cli/nix3-flake.md) specified by
the user at the time of installation (e.g. `nixpkgs`). This is also
the flake reference that will be used by `nix profile upgrade`.
* `uri`: The locked flake reference to which `originalUrl` resolved.
* `attrPath`: The flake output attribute that provided this
package. Note that this is not necessarily the attribute that the
user specified, but the one resulting from applying the default
attribute paths and prefixes; for instance, `hello` might resolve to
`packages.x86_64-linux.hello` and the empty string to
`packages.x86_64-linux.default`.
* `storePath`: The paths in the Nix store containing the package.
* `active`: Whether the profile contains symlinks to the files of this
package. If set to false, the package is kept in the Nix store, but
is not "visible" in the profile's symlink tree.

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@ -1,128 +0,0 @@
## `manifest.nix`
The manifest file records the provenance of the packages that are installed in a [profile](./profiles.md) managed by [`nix-env`](@docroot@/command-ref/nix-env.md).
Here is an example of how this file might look like after installing `hello` from Nixpkgs:
```nix
[{
meta = {
available = true;
broken = false;
changelog =
"https://git.savannah.gnu.org/cgit/hello.git/plain/NEWS?h=v2.12.1";
description = "A program that produces a familiar, friendly greeting";
homepage = "https://www.gnu.org/software/hello/manual/";
insecure = false;
license = {
deprecated = false;
free = true;
fullName = "GNU General Public License v3.0 or later";
redistributable = true;
shortName = "gpl3Plus";
spdxId = "GPL-3.0-or-later";
url = "https://spdx.org/licenses/GPL-3.0-or-later.html";
};
longDescription = ''
GNU Hello is a program that prints "Hello, world!" when you run it.
It is fully customizable.
'';
maintainers = [{
email = "edolstra+nixpkgs@gmail.com";
github = "edolstra";
githubId = 1148549;
name = "Eelco Dolstra";
}];
name = "hello-2.12.1";
outputsToInstall = [ "out" ];
platforms = [
"i686-cygwin"
"x86_64-cygwin"
"x86_64-darwin"
"i686-darwin"
"aarch64-darwin"
"armv7a-darwin"
"i686-freebsd13"
"x86_64-freebsd13"
"aarch64-genode"
"i686-genode"
"x86_64-genode"
"x86_64-solaris"
"js-ghcjs"
"aarch64-linux"
"armv5tel-linux"
"armv6l-linux"
"armv7a-linux"
"armv7l-linux"
"i686-linux"
"m68k-linux"
"microblaze-linux"
"microblazeel-linux"
"mipsel-linux"
"mips64el-linux"
"powerpc64-linux"
"powerpc64le-linux"
"riscv32-linux"
"riscv64-linux"
"s390-linux"
"s390x-linux"
"x86_64-linux"
"mmix-mmixware"
"aarch64-netbsd"
"armv6l-netbsd"
"armv7a-netbsd"
"armv7l-netbsd"
"i686-netbsd"
"m68k-netbsd"
"mipsel-netbsd"
"powerpc-netbsd"
"riscv32-netbsd"
"riscv64-netbsd"
"x86_64-netbsd"
"aarch64_be-none"
"aarch64-none"
"arm-none"
"armv6l-none"
"avr-none"
"i686-none"
"microblaze-none"
"microblazeel-none"
"msp430-none"
"or1k-none"
"m68k-none"
"powerpc-none"
"powerpcle-none"
"riscv32-none"
"riscv64-none"
"rx-none"
"s390-none"
"s390x-none"
"vc4-none"
"x86_64-none"
"i686-openbsd"
"x86_64-openbsd"
"x86_64-redox"
"wasm64-wasi"
"wasm32-wasi"
"x86_64-windows"
"i686-windows"
];
position =
"/nix/store/7niq32w715567hbph0q13m5lqna64c1s-nixos-unstable.tar.gz/nixos-unstable.tar.gz/pkgs/applications/misc/hello/default.nix:34";
unfree = false;
unsupported = false;
};
name = "hello-2.12.1";
out = {
outPath = "/nix/store/260q5867crm1xjs4khgqpl6vr9kywql1-hello-2.12.1";
};
outPath = "/nix/store/260q5867crm1xjs4khgqpl6vr9kywql1-hello-2.12.1";
outputs = [ "out" ];
system = "x86_64-linux";
type = "derivation";
}]
```
Each element in this list corresponds to an installed package.
It incorporates some attributes of the original derivation, including `meta`, `name`, `out`, `outPath`, `outputs`, `system`.
This information is used by Nix for querying and updating the package.

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@ -1,74 +0,0 @@
## Profiles
A directory that contains links to profiles managed by [`nix-env`] and [`nix profile`]:
- `$XDG_STATE_HOME/nix/profiles` for regular users
- `$NIX_STATE_DIR/profiles/per-user/root` if the user is `root`
A profile is a directory of symlinks to files in the Nix store.
### Filesystem layout
Profiles are versioned as follows. When using a profile named *path*, *path* is a symlink to *path*`-`*N*`-link`, where *N* is the version of the profile.
In turn, *path*`-`*N*`-link` is a symlink to a path in the Nix store.
For example:
```console
$ ls -l ~alice/.local/state/nix/profiles/profile*
lrwxrwxrwx 1 alice users 14 Nov 25 14:35 /home/alice/.local/state/nix/profiles/profile -> profile-7-link
lrwxrwxrwx 1 alice users 51 Oct 28 16:18 /home/alice/.local/state/nix/profiles/profile-5-link -> /nix/store/q69xad13ghpf7ir87h0b2gd28lafjj1j-profile
lrwxrwxrwx 1 alice users 51 Oct 29 13:20 /home/alice/.local/state/nix/profiles/profile-6-link -> /nix/store/6bvhpysd7vwz7k3b0pndn7ifi5xr32dg-profile
lrwxrwxrwx 1 alice users 51 Nov 25 14:35 /home/alice/.local/state/nix/profiles/profile-7-link -> /nix/store/mp0x6xnsg0b8qhswy6riqvimai4gm677-profile
```
Each of these symlinks is a root for the Lix garbage collector.
The contents of the store path corresponding to each version of the
profile is a tree of symlinks to the files of the installed packages,
e.g.
```console
$ ll -R ~eelco/.local/state/nix/profiles/profile-7-link/
/home/eelco/.local/state/nix/profiles/profile-7-link/:
total 20
dr-xr-xr-x 2 root root 4096 Jan 1 1970 bin
-r--r--r-- 2 root root 1402 Jan 1 1970 manifest.nix
dr-xr-xr-x 4 root root 4096 Jan 1 1970 share
/home/eelco/.local/state/nix/profiles/profile-7-link/bin:
total 20
lrwxrwxrwx 5 root root 79 Jan 1 1970 chromium -> /nix/store/ijm5k0zqisvkdwjkc77mb9qzb35xfi4m-chromium-86.0.4240.111/bin/chromium
lrwxrwxrwx 7 root root 87 Jan 1 1970 spotify -> /nix/store/w9182874m1bl56smps3m5zjj36jhp3rn-spotify-1.1.26.501.gbe11e53b-15/bin/spotify
lrwxrwxrwx 3 root root 79 Jan 1 1970 zoom-us -> /nix/store/wbhg2ga8f3h87s9h5k0slxk0m81m4cxl-zoom-us-5.3.469451.0927/bin/zoom-us
/home/eelco/.local/state/nix/profiles/profile-7-link/share/applications:
total 12
lrwxrwxrwx 4 root root 120 Jan 1 1970 chromium-browser.desktop -> /nix/store/4cf803y4vzfm3gyk3vzhzb2327v0kl8a-chromium-unwrapped-86.0.4240.111/share/applications/chromium-browser.desktop
lrwxrwxrwx 7 root root 110 Jan 1 1970 spotify.desktop -> /nix/store/w9182874m1bl56smps3m5zjj36jhp3rn-spotify-1.1.26.501.gbe11e53b-15/share/applications/spotify.desktop
lrwxrwxrwx 3 root root 107 Jan 1 1970 us.zoom.Zoom.desktop -> /nix/store/wbhg2ga8f3h87s9h5k0slxk0m81m4cxl-zoom-us-5.3.469451.0927/share/applications/us.zoom.Zoom.desktop
```
Each profile version contains a manifest file:
- [`manifest.nix`](@docroot@/command-ref/files/manifest.nix.md) used by [`nix-env`](@docroot@/command-ref/nix-env.md).
- [`manifest.json`](@docroot@/command-ref/files/manifest.json.md) used by [`nix profile`](@docroot@/command-ref/new-cli/nix3-profile.md) (experimental).
## User profile link
A symbolic link to the user's current profile:
- `~/.nix-profile`
- `$XDG_STATE_HOME/nix/profile` if [`use-xdg-base-directories`] is set to `true`.
By default, this symlink points to:
- `$XDG_STATE_HOME/nix/profiles/profile` for regular users
- `$NIX_STATE_DIR/profiles/per-user/root/profile` for `root`
The `PATH` environment variable should include `/bin` subdirectory of the profile link (e.g. `~/.nix-profile/bin`) for the user environment to be visible to the user.
The [installer](@docroot@/installation/installing-binary.md) sets this up by default, unless you enable [`use-xdg-base-directories`].
[`nix-env`]: @docroot@/command-ref/nix-env.md
[`nix profile`]: @docroot@/command-ref/new-cli/nix3-profile.md
[`use-xdg-base-directories`]: @docroot@/command-ref/conf-file.md#conf-use-xdg-base-directories

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@ -1,4 +0,0 @@
# Main Commands
This section lists commands and options that you can use when you work
with Lix.

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@ -1,81 +0,0 @@
experimental_features_shortlist_md = custom_target(
command : nix_eval_for_docs + [
'--expr',
'import @INPUT0@ "experimental" "xp" (builtins.fromJSON (builtins.readFile @INPUT1@))',
],
input : [
'../../generate-features-shortlist.nix',
nix_exp_features_json,
],
capture : true,
output : 'experimental-features-shortlist.md',
env : nix_env_for_docs,
)
dp_features_json = custom_target(
command : [nix, '__dump-dp-features'],
capture : true,
output : 'dp-features.json',
)
deprecated_features_shortlist_md = custom_target(
command : nix_eval_for_docs + [
'--expr',
'import @INPUT0@ "deprecated" "dp" (builtins.fromJSON (builtins.readFile @INPUT1@))',
],
input : [
'../../generate-features-shortlist.nix',
dp_features_json,
],
capture : true,
output : 'deprecated-features-shortlist.md',
env : nix_env_for_docs,
)
# Intermediate step for manpage generation.
# This splorks the output of generate-manpage.nix as JSON,
# which gets written as a directory tree below.
nix3_cli_files_json = custom_target(
command : nix_eval_for_docs_common + [
'--json',
'--expr',
'import @INPUT0@ true (builtins.readFile @INPUT1@)',
],
input : [
'../../generate-manpage.nix',
nix3_cli_json,
],
capture : true,
output : 'new-cli.json',
env : nix_env_for_docs,
)
nix3_cli_files = custom_target(
command : [
python,
'@INPUT0@',
'-i', '@INPUT1@',
'-o', '@OUTPUT@',
],
input : [
'../../json-to-tree.py',
nix3_cli_files_json,
],
output : 'new-cli',
)
conf_file_md = custom_target(
command : [
nix_eval_for_docs,
'--expr',
'(import @INPUT0@).showSettings { inlineHTML = true; } (builtins.fromJSON (builtins.readFile @INPUT1@))',
],
capture : true,
input : [
'../../utils.nix',
conf_file_json,
experimental_features_shortlist_md,
deprecated_features_shortlist_md,
],
output : 'conf-file.md',
env : nix_env_for_docs,
)

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@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-build.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-bundle.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-config-show.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-config.md}}

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@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-copy.md}}

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@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-daemon.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-derivation-add.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-derivation-show.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-derivation.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-develop.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-doctor.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-edit.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-eval.md}}

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@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-flake-archive.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-flake-check.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-flake-clone.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-flake-info.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-flake-init.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-flake-lock.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-flake-metadata.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-flake-new.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-flake-prefetch.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-flake-show.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-flake-update.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-flake.md}}

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@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-fmt.md}}

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@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-hash-file.md}}

View file

@ -1 +0,0 @@
{{#include @generated@/command-ref/new-cli/nix3-hash-path.md}}

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