Using the full store hash as the random seed occasionally caused
reference cycles when the invocation was stored in output artifacts.
For example, cross-compiled gcc was failing due to this:
https://hydra.nixos.org/eval/1631713#tabs-now-fail
Simply truncating the hash is sufficient to avoid this.
Use "find -exec" to strip rather than "find … | xargs …". The former
ensures that stripping is attempted for each file, whereas the latter
will stop stripping at the first failure. Unstripped files can fool
runtime dependency detection and bloat closure sizes.
For example graphviz has chained symlinked manpages: dot2gxl.1 is
a symlink to gv2gxl.1 which is a symlink to gxl2gv.1
The second loop replaces each non-compressed symlink to a compressed
symlink. The target is determined with 'readlink -f', which follows
links recursively until the first name that is not a link (so either
the 'target name' or the first 'dangling' symlink).
This means that if the loop converted dot2gxl.1 before converting
gv2gxl.1 it would add a symlink `dot2gxl.1.gz->gxl2gv.1.gz`. When
it converted gv2gxl.1 first, it would then add a
`dot2gxl.1.gz->gv2gxl.1.gz` symlink.
Both are 'correct', but it's weird the result depends on the order
in which 'find' returns the files. This PR makes the behaviour
deterministic.
fixes#104708
This adds -frandom-seed to each compiler invocation in stdenv. The
object here is to make the compierl invocations produce the same output
every time they are called (for the same derivation). When the
-frandom-seed option is not set the compiler will use a combination of
random numbers (in GCC's case from /dev/urandom) and the durrent time to
produce a "random" input per file. This can (among other things) lead to
different ordering of symbols in the produced object files.
For reason of reproducibility we prefer having the same derivation
produce the exact same outputs. This is not a silver bullet but one way
to tame the compiler.
I made a mistake merge. Reverting it in c778945806 undid the state
on master, but now I realize it crippled the git merge mechanism.
As the merge contained a mix of commits from `master..staging-next`
and other commits from `staging-next..staging`, it got the
`staging-next` branch into a state that was difficult to recover.
I reconstructed the "desired" state of staging-next tree by:
- checking out the last commit of the problematic range: 4effe769e2
- `git rebase -i --preserve-merges a8a018ddc0` - dropping the mistaken
merge commit and its revert from that range (while keeping
reapplication from 4effe769e2)
- merging the last unaffected staging-next commit (803ca85c20)
- fortunately no other commits have been pushed to staging-next yet
- applying a diff on staging-next to get it into that state
This reverts commit c778945806.
I believe this is exactly what brings the staging branch into
the right shape after the last merge from master (through staging-next);
otherwise part of staging changes would be lost
(due to being already reachable from master but reverted).
Teach installShellCompletion how to install completions from a named
pipe. Also add a convenience flag `--cmd NAME` that synthesizes the name
for each completion instead of requiring repeated `--name` flags.
Usage looks something like
installShellCompletion --cmd foobar \
--bash <($out/bin/foobar --bash-completion) \
--fish <($out/bin/foobar --fish-completion) \
--zsh <($out/bin/foobar --zsh-completion)
Fixes#83284
This hook moves systemd user service file from `lib/systemd/user` to
`share/systemd/user`. This is to allow systemd to find the user
services when installed into a user profile. The `lib/systemd/user`
path does not work since `lib` is not in `XDG_DATA_DIRS`.
This is supposed to shareDocName to a fallback value if it can't be
determined from looking at the configure script. But the conditional
checked whether shareDocName was set, rather than if it wasn't. This
meant that if shareDocName had been detected from a configure script,
it would be immediately overridden by the package name, and if it
couldn't be detected, shareDocName would remain unset.
This resulted in QEMU installing files like $out/share/doc/index.html,
which should of course have been in $out/share/doc/qemu/index.html.
An interesting side effect of this is that, since
9f8751528c when this code was added, the
detected package name has never actually been used for installing
documentation, because it would always be overridden. So this patch
will actually enable that for the first time, four years later.
Fixes: https://github.com/NixOS/nixpkgs/issues/90486
This adds the `validatePkgConfig` hook, which can be used to validate
pkg-config files in the output(s). Currently, this will just run
`pkg-config --validate` on all `.pc` files, capturing errors such as
the issue that was fixed in #87789.
The hook could be extended in the future with more fine-grained
checks.
I hate the thing too even though I made it, and rather just get rid of
it. But we can't do that yet. In the meantime, this brings us more
inline with autoconf and will make it slightly easier for me to write a
pkg-config wrapper, which we need.
While looking at the graph of all the outputs in my personal binary
cache it became obvious that we have a lot of self references within the
package set. That isn't an isuse by itself. However it increases the
size of the binary cache for every (reproducible) build of a package
that carries references to itself. You can no longer deduplicate the
outputs since they are all unique. One of the ways to get rid of (a few)
references is to rewrite all the symlinks that are currently used to be
relative symlinks. Two build of something that didn't really change but
carries a self-reference can the be store as the same NAR file again.
I quickly hacked together this change to see if that would yield and
success. My bash scripting skills are probably not great but so far it
seem to somewhat work.
Adding empty variables can lead to this problem:
```diff
wrapProgram \
./pye_menu_shell \
--prefix PATH : /nix/store/4c3z5r6yxsf2cxwwyazhdn92xixn4j5b-python3-3.7.5/bin:/nix/store/b3l3niilvqcxcsbxmd6sgqk1dy1rk81c-pye-menu-1.0/bin:/nix/store/y8j1cfj8d9r5rbbxc22w7hnfjw5f4fd3-cairo-1.16.0-dev/bin:/nix/store/6mg7lfbdh9pgx7pbxr3544qqbrigdl1q-freetype-2.10.1-dev/bin:/nix/store/gpszqcy0xi0lavbbjdq82zkkjp3jbp2a-bzip2-1.0.6.0.1-bin/bin:/nix/store/031c5pk5lzabgmpqpyd46hzi625as6bp-libpng-apng-1.6.37-dev/bin:/nix/store/f8kl7kmpv130aw9zm542p74a3hg0yc13-fontconfig-2.12.6-bin/bin:/nix/store/bqp30vkncmm222mjvwggz0s7p318sflj-expat-2.2.7-dev/bin:/nix/store/w57xa8g4s4aviwmqwgra7m5hwj2b005m-glib-2.60.7-dev/bin:/nix/store/v5d4966ahvfir2hwpv003022f3pb7vik-gettext-0.19.8.1/bin:/nix/store/qpvxhl1jr0fxnrx9idnpdagqs00m5m2z-glib-2.60.7/bin \
--set PYTHONNOUSERSITE true \
--set GDK_PIXBUF_MODULE_FILE /nix/store/7ddlakx6xjczqbfs80xjd14f30fzadws-gdk-pixbuf-2.38.1/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache \
--prefix XDG_DATA_DIRS : /nix/store/0snjc1qg89zqn3v35l9d55xrykh9nj5c-gtk+3-3.24.10/share/gsettings-schemas/gtk+3-3.24.10:/nix/store/b41z51vdv11n6df8ki5vj8dynxw98f9l-gsettings-desktop-schemas-3.32.0/share/gsettings-schemas/gsettings-desktop-schemas-3.32.0:/nix/store/0snjc1qg89zqn3v35l9d55xrykh9nj5c-gtk+3-3.24.10/share/gsettings-schemas/gtk+3-3.24.10 \
- --prefix GST_PLUGIN_SYSTEM_PATH_1_0 : \
+ --prefix GST_PLUGIN_SYSTEM_PATH_1_0 : "" \
--prefix GI_TYPELIB_PATH : /nix/store/0snjc1qg89zqn3v35l9d55xrykh9nj5c-gtk+3-3.24.10/lib/girepository-1.0:/nix/store/z29l5xaaxh1s0697mcldj71ab0zshry1-librsvg-2.44.15/lib/girepository-1.0:/nix/store/pija1xzm7izxfb5m2hvhvlwp1l38ffxa-gobject-introspection-1.60.2/lib/girepository-1.0 \
- --prefix GRL_PLUGIN_PATH :
+ --prefix GRL_PLUGIN_PATH : ""
```
Where the diff is to highlight the problem: we don't have a valid value
for GST_PLUGIN_SYSTEM_PATH_1_0 or GRL_PLUGIN_PATH, and instead of
passing the empy string, the empty string gets unquoted somewhere, so we
end up passing no arguments, thus the parser in wrapProgram takes
--prefix as the argument of GST_PLUGIN_SYSTEM_PATH_1_0, and then
GI_TYPELIB_PATH is missing it's --prefix so wrapProgram complains/dies.
The easiest change is to not add empty arguments to the wrapper
Go beyond the obvious setup hooks now, with a bit of sed, with a skipped case:
- cc-wrapper's `dontlink`, because it already is handled.
Also, in nix files escaping was manually added.
EMP
There is a bug in this feature: It allows extra arguments to leak in
from the environment. For example:
$ export extraFlagsArray=date
$ man ls
Note that you get the man page for date rather than for ls. This happens
because 'man' happens to use a wrapper (to add groff to its PATH).
An attempt to fix this was made in 5ae18574fc in PR #19328 for
issue #2537, but 1. That change didn't actually fix the problem because
it addressed makeWrapper's environment during the build process, not the
constructed wrapper script's environment after installation, and 2. That
change was apparently accidentally lost when merged with 7ff6eec5fd.
Rather than trying to fix the bug again, we remove the extraFlagsArray
feature, since it has never been used in the public repo in the ten
years it has been available.
wrapAclocal continues to use its own, separate flavor of extraFlagsArray
in a more limited context. The analogous bug there was fixed in
4d7d10da6b in 2011.
These should not cause issues in practice but it is good idea to handle them.
* prefix and targetOffset are mandatory, as they are always set by the generic builder.
* wrapPrefixVariables and dontWrapGApps are now defaulting to empty value, as they are not mandatory.
