42c94d06fd
```
nix-repl> (pkgs.htop.overrideAttrs { pname = "hello-overriden"; }).pname
error:
… while evaluating a branch condition
at /nix/store/phn5cahwacv9wjgalygw62x8l4xbl6x3-source/lib/customisation.nix:86:7:
85| in
86| if builtins.isAttrs result then
| ^
87| result // {
… while calling the 'isAttrs' builtin
at /nix/store/phn5cahwacv9wjgalygw62x8l4xbl6x3-source/lib/customisation.nix:86:10:
85| in
86| if builtins.isAttrs result then
| ^
87| result // {
(stack trace truncated; use '--show-trace' to show the full trace)
error: attempt to call something which is not a function but a set
at /nix/store/phn5cahwacv9wjgalygw62x8l4xbl6x3-source/pkgs/stdenv/generic/make-derivation.nix:58:21:
57| f = self: super:
58| let x = f0 super;
| ^
59| in
```
552 lines
25 KiB
Nix
552 lines
25 KiB
Nix
{ lib, config }:
|
||
|
||
stdenv:
|
||
|
||
let
|
||
checkMeta = import ./check-meta.nix {
|
||
inherit lib config;
|
||
# Nix itself uses the `system` field of a derivation to decide where
|
||
# to build it. This is a bit confusing for cross compilation.
|
||
inherit (stdenv) hostPlatform;
|
||
};
|
||
|
||
# Based off lib.makeExtensible, with modifications:
|
||
makeDerivationExtensible = rattrs:
|
||
let
|
||
# NOTE: The following is a hint that will be printed by the Nix cli when
|
||
# encountering an infinite recursion. It must not be formatted into
|
||
# separate lines, because Nix would only show the last line of the comment.
|
||
|
||
# An infinite recursion here can be caused by having the attribute names of expression `e` in `.overrideAttrs(finalAttrs: previousAttrs: e)` depend on `finalAttrs`. Only the attribute values of `e` can depend on `finalAttrs`.
|
||
args = rattrs (args // { inherit finalPackage overrideAttrs; });
|
||
# ^^^^
|
||
|
||
overrideAttrs = f0:
|
||
let
|
||
f = self: super:
|
||
# Convert f0 to an overlay. Legacy is:
|
||
# overrideAttrs (super: {})
|
||
# We want to introduce self. We follow the convention of overlays:
|
||
# overrideAttrs (self: super: {})
|
||
# Which means the first parameter can be either self or super.
|
||
# This is surprising, but far better than the confusion that would
|
||
# arise from flipping an overlay's parameters in some cases.
|
||
let x = f0 super;
|
||
in
|
||
if builtins.isFunction x
|
||
then
|
||
# Can't reuse `x`, because `self` comes first.
|
||
# Looks inefficient, but `f0 super` was a cheap thunk.
|
||
f0 self super
|
||
else x;
|
||
in
|
||
makeDerivationExtensible
|
||
(self: let super = rattrs self; in super // (if builtins.isFunction f0 || f0?__functor then f self super else f0));
|
||
|
||
finalPackage =
|
||
mkDerivationSimple overrideAttrs args;
|
||
|
||
in finalPackage;
|
||
|
||
# makeDerivationExtensibleConst == makeDerivationExtensible (_: attrs),
|
||
# but pre-evaluated for a slight improvement in performance.
|
||
makeDerivationExtensibleConst = attrs:
|
||
mkDerivationSimple
|
||
(f0:
|
||
let
|
||
f = self: super:
|
||
let x = f0 super;
|
||
in
|
||
if builtins.isFunction x
|
||
then
|
||
f0 self super
|
||
else x;
|
||
in
|
||
makeDerivationExtensible (self: attrs // (if builtins.isFunction f0 || f0?__functor then f self attrs else f0)))
|
||
attrs;
|
||
|
||
mkDerivationSimple = overrideAttrs:
|
||
|
||
|
||
# `mkDerivation` wraps the builtin `derivation` function to
|
||
# produce derivations that use this stdenv and its shell.
|
||
#
|
||
# See also:
|
||
#
|
||
# * https://nixos.org/nixpkgs/manual/#sec-using-stdenv
|
||
# Details on how to use this mkDerivation function
|
||
#
|
||
# * https://nixos.org/manual/nix/stable/expressions/derivations.html#derivations
|
||
# Explanation about derivations in general
|
||
{
|
||
|
||
# These types of dependencies are all exhaustively documented in
|
||
# the "Specifying Dependencies" section of the "Standard
|
||
# Environment" chapter of the Nixpkgs manual.
|
||
|
||
# TODO(@Ericson2314): Stop using legacy dep attribute names
|
||
|
||
# host offset -> target offset
|
||
depsBuildBuild ? [] # -1 -> -1
|
||
, depsBuildBuildPropagated ? [] # -1 -> -1
|
||
, nativeBuildInputs ? [] # -1 -> 0 N.B. Legacy name
|
||
, propagatedNativeBuildInputs ? [] # -1 -> 0 N.B. Legacy name
|
||
, depsBuildTarget ? [] # -1 -> 1
|
||
, depsBuildTargetPropagated ? [] # -1 -> 1
|
||
|
||
, depsHostHost ? [] # 0 -> 0
|
||
, depsHostHostPropagated ? [] # 0 -> 0
|
||
, buildInputs ? [] # 0 -> 1 N.B. Legacy name
|
||
, propagatedBuildInputs ? [] # 0 -> 1 N.B. Legacy name
|
||
|
||
, depsTargetTarget ? [] # 1 -> 1
|
||
, depsTargetTargetPropagated ? [] # 1 -> 1
|
||
|
||
, checkInputs ? []
|
||
, installCheckInputs ? []
|
||
, nativeCheckInputs ? []
|
||
, nativeInstallCheckInputs ? []
|
||
|
||
# Configure Phase
|
||
, configureFlags ? []
|
||
, cmakeFlags ? []
|
||
, mesonFlags ? []
|
||
, # Target is not included by default because most programs don't care.
|
||
# Including it then would cause needless mass rebuilds.
|
||
#
|
||
# TODO(@Ericson2314): Make [ "build" "host" ] always the default / resolve #87909
|
||
configurePlatforms ? lib.optionals
|
||
(stdenv.hostPlatform != stdenv.buildPlatform || config.configurePlatformsByDefault)
|
||
[ "build" "host" ]
|
||
|
||
# TODO(@Ericson2314): Make unconditional / resolve #33599
|
||
# Check phase
|
||
, doCheck ? config.doCheckByDefault or false
|
||
|
||
# TODO(@Ericson2314): Make unconditional / resolve #33599
|
||
# InstallCheck phase
|
||
, doInstallCheck ? config.doCheckByDefault or false
|
||
|
||
, # TODO(@Ericson2314): Make always true and remove / resolve #178468
|
||
strictDeps ? if config.strictDepsByDefault then true else stdenv.hostPlatform != stdenv.buildPlatform
|
||
|
||
, enableParallelBuilding ? config.enableParallelBuildingByDefault
|
||
|
||
, meta ? {}
|
||
, passthru ? {}
|
||
, pos ? # position used in error messages and for meta.position
|
||
(if attrs.meta.description or null != null
|
||
then builtins.unsafeGetAttrPos "description" attrs.meta
|
||
else if attrs.version or null != null
|
||
then builtins.unsafeGetAttrPos "version" attrs
|
||
else builtins.unsafeGetAttrPos "name" attrs)
|
||
, separateDebugInfo ? false
|
||
, outputs ? [ "out" ]
|
||
, __darwinAllowLocalNetworking ? false
|
||
, __impureHostDeps ? []
|
||
, __propagatedImpureHostDeps ? []
|
||
, sandboxProfile ? ""
|
||
, propagatedSandboxProfile ? ""
|
||
|
||
, hardeningEnable ? []
|
||
, hardeningDisable ? []
|
||
|
||
, patches ? []
|
||
|
||
, __contentAddressed ?
|
||
(! attrs ? outputHash) # Fixed-output drvs can't be content addressed too
|
||
&& config.contentAddressedByDefault
|
||
|
||
# Experimental. For simple packages mostly just works,
|
||
# but for anything complex, be prepared to debug if enabling.
|
||
, __structuredAttrs ? config.structuredAttrsByDefault or false
|
||
|
||
, env ? { }
|
||
|
||
, ... } @ attrs:
|
||
|
||
let
|
||
# TODO(@oxij, @Ericson2314): This is here to keep the old semantics, remove when
|
||
# no package has `doCheck = true`.
|
||
doCheck' = doCheck && stdenv.buildPlatform.canExecute stdenv.hostPlatform;
|
||
doInstallCheck' = doInstallCheck && stdenv.buildPlatform.canExecute stdenv.hostPlatform;
|
||
|
||
separateDebugInfo' = separateDebugInfo && stdenv.hostPlatform.isLinux;
|
||
outputs' = outputs ++ lib.optional separateDebugInfo' "debug";
|
||
|
||
# Turn a derivation into its outPath without a string context attached.
|
||
# See the comment at the usage site.
|
||
unsafeDerivationToUntrackedOutpath = drv:
|
||
if lib.isDerivation drv
|
||
then builtins.unsafeDiscardStringContext drv.outPath
|
||
else drv;
|
||
|
||
noNonNativeDeps = builtins.length (depsBuildTarget ++ depsBuildTargetPropagated
|
||
++ depsHostHost ++ depsHostHostPropagated
|
||
++ buildInputs ++ propagatedBuildInputs
|
||
++ depsTargetTarget ++ depsTargetTargetPropagated) == 0;
|
||
dontAddHostSuffix = attrs ? outputHash && !noNonNativeDeps || !stdenv.hasCC;
|
||
|
||
hardeningDisable' = if lib.any (x: x == "fortify") hardeningDisable
|
||
# disabling fortify implies fortify3 should also be disabled
|
||
then lib.unique (hardeningDisable ++ [ "fortify3" ])
|
||
else hardeningDisable;
|
||
supportedHardeningFlags = [ "fortify" "fortify3" "stackprotector" "pie" "pic" "strictoverflow" "format" "relro" "bindnow" ];
|
||
# Musl-based platforms will keep "pie", other platforms will not.
|
||
# If you change this, make sure to update section `{#sec-hardening-in-nixpkgs}`
|
||
# in the nixpkgs manual to inform users about the defaults.
|
||
defaultHardeningFlags = let
|
||
# not ready for this by default
|
||
supportedHardeningFlags' = lib.remove "fortify3" supportedHardeningFlags;
|
||
in if stdenv.hostPlatform.isMusl &&
|
||
# Except when:
|
||
# - static aarch64, where compilation works, but produces segfaulting dynamically linked binaries.
|
||
# - static armv7l, where compilation fails.
|
||
!(stdenv.hostPlatform.isAarch && stdenv.hostPlatform.isStatic)
|
||
then supportedHardeningFlags'
|
||
else lib.remove "pie" supportedHardeningFlags';
|
||
enabledHardeningOptions =
|
||
if builtins.elem "all" hardeningDisable'
|
||
then []
|
||
else lib.subtractLists hardeningDisable' (defaultHardeningFlags ++ hardeningEnable);
|
||
# hardeningDisable additionally supports "all".
|
||
erroneousHardeningFlags = lib.subtractLists supportedHardeningFlags (hardeningEnable ++ lib.remove "all" hardeningDisable);
|
||
|
||
checkDependencyList = checkDependencyList' [];
|
||
checkDependencyList' = positions: name: deps: lib.flip lib.imap1 deps (index: dep:
|
||
if lib.isDerivation dep || dep == null || builtins.isString dep || builtins.isPath dep then dep
|
||
else if lib.isList dep then checkDependencyList' ([index] ++ positions) name dep
|
||
else throw "Dependency is not of a valid type: ${lib.concatMapStrings (ix: "element ${toString ix} of ") ([index] ++ positions)}${name} for ${attrs.name or attrs.pname}");
|
||
in if builtins.length erroneousHardeningFlags != 0
|
||
then abort ("mkDerivation was called with unsupported hardening flags: " + lib.generators.toPretty {} {
|
||
inherit erroneousHardeningFlags hardeningDisable hardeningEnable supportedHardeningFlags;
|
||
})
|
||
else let
|
||
doCheck = doCheck';
|
||
doInstallCheck = doInstallCheck';
|
||
buildInputs' = buildInputs
|
||
++ lib.optionals doCheck checkInputs
|
||
++ lib.optionals doInstallCheck installCheckInputs;
|
||
nativeBuildInputs' = nativeBuildInputs
|
||
++ lib.optional separateDebugInfo' ../../build-support/setup-hooks/separate-debug-info.sh
|
||
++ lib.optional stdenv.hostPlatform.isWindows ../../build-support/setup-hooks/win-dll-link.sh
|
||
++ lib.optionals doCheck nativeCheckInputs
|
||
++ lib.optionals doInstallCheck nativeInstallCheckInputs;
|
||
|
||
outputs = outputs';
|
||
|
||
references = nativeBuildInputs ++ buildInputs
|
||
++ propagatedNativeBuildInputs ++ propagatedBuildInputs;
|
||
|
||
dependencies = map (map lib.chooseDevOutputs) [
|
||
[
|
||
(map (drv: drv.__spliced.buildBuild or drv) (checkDependencyList "depsBuildBuild" depsBuildBuild))
|
||
(map (drv: drv.__spliced.buildHost or drv) (checkDependencyList "nativeBuildInputs" nativeBuildInputs'))
|
||
(map (drv: drv.__spliced.buildTarget or drv) (checkDependencyList "depsBuildTarget" depsBuildTarget))
|
||
]
|
||
[
|
||
(map (drv: drv.__spliced.hostHost or drv) (checkDependencyList "depsHostHost" depsHostHost))
|
||
(map (drv: drv.__spliced.hostTarget or drv) (checkDependencyList "buildInputs" buildInputs'))
|
||
]
|
||
[
|
||
(map (drv: drv.__spliced.targetTarget or drv) (checkDependencyList "depsTargetTarget" depsTargetTarget))
|
||
]
|
||
];
|
||
propagatedDependencies = map (map lib.chooseDevOutputs) [
|
||
[
|
||
(map (drv: drv.__spliced.buildBuild or drv) (checkDependencyList "depsBuildBuildPropagated" depsBuildBuildPropagated))
|
||
(map (drv: drv.__spliced.buildHost or drv) (checkDependencyList "propagatedNativeBuildInputs" propagatedNativeBuildInputs))
|
||
(map (drv: drv.__spliced.buildTarget or drv) (checkDependencyList "depsBuildTargetPropagated" depsBuildTargetPropagated))
|
||
]
|
||
[
|
||
(map (drv: drv.__spliced.hostHost or drv) (checkDependencyList "depsHostHostPropagated" depsHostHostPropagated))
|
||
(map (drv: drv.__spliced.hostTarget or drv) (checkDependencyList "propagatedBuildInputs" propagatedBuildInputs))
|
||
]
|
||
[
|
||
(map (drv: drv.__spliced.targetTarget or drv) (checkDependencyList "depsTargetTargetPropagated" depsTargetTargetPropagated))
|
||
]
|
||
];
|
||
|
||
computedSandboxProfile =
|
||
lib.concatMap (input: input.__propagatedSandboxProfile or [])
|
||
(stdenv.extraNativeBuildInputs
|
||
++ stdenv.extraBuildInputs
|
||
++ lib.concatLists dependencies);
|
||
|
||
computedPropagatedSandboxProfile =
|
||
lib.concatMap (input: input.__propagatedSandboxProfile or [])
|
||
(lib.concatLists propagatedDependencies);
|
||
|
||
computedImpureHostDeps =
|
||
lib.unique (lib.concatMap (input: input.__propagatedImpureHostDeps or [])
|
||
(stdenv.extraNativeBuildInputs
|
||
++ stdenv.extraBuildInputs
|
||
++ lib.concatLists dependencies));
|
||
|
||
computedPropagatedImpureHostDeps =
|
||
lib.unique (lib.concatMap (input: input.__propagatedImpureHostDeps or [])
|
||
(lib.concatLists propagatedDependencies));
|
||
|
||
envIsExportable = lib.isAttrs env && !lib.isDerivation env;
|
||
|
||
derivationArg =
|
||
(removeAttrs attrs
|
||
(["meta" "passthru" "pos"
|
||
"checkInputs" "installCheckInputs"
|
||
"nativeCheckInputs" "nativeInstallCheckInputs"
|
||
"__contentAddressed"
|
||
"__darwinAllowLocalNetworking"
|
||
"__impureHostDeps" "__propagatedImpureHostDeps"
|
||
"sandboxProfile" "propagatedSandboxProfile"]
|
||
++ lib.optional (__structuredAttrs || envIsExportable) "env"))
|
||
// (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
|
||
name =
|
||
let
|
||
# Indicate the host platform of the derivation if cross compiling.
|
||
# Fixed-output derivations like source tarballs shouldn't get a host
|
||
# suffix. But we have some weird ones with run-time deps that are
|
||
# just used for their side-affects. Those might as well since the
|
||
# hash can't be the same. See #32986.
|
||
hostSuffix = lib.optionalString
|
||
(stdenv.hostPlatform != stdenv.buildPlatform && !dontAddHostSuffix)
|
||
"-${stdenv.hostPlatform.config}";
|
||
|
||
# Disambiguate statically built packages. This was originally
|
||
# introduce as a means to prevent nix-env to get confused between
|
||
# nix and nixStatic. This should be also achieved by moving the
|
||
# hostSuffix before the version, so we could contemplate removing
|
||
# it again.
|
||
staticMarker = lib.optionalString stdenv.hostPlatform.isStatic "-static";
|
||
in
|
||
lib.strings.sanitizeDerivationName (
|
||
if attrs ? name
|
||
then attrs.name + hostSuffix
|
||
else
|
||
# we cannot coerce null to a string below
|
||
assert lib.assertMsg (attrs ? version && attrs.version != null) "The ‘version’ attribute cannot be null.";
|
||
"${attrs.pname}${staticMarker}${hostSuffix}-${attrs.version}"
|
||
);
|
||
}) // lib.optionalAttrs __structuredAttrs { env = checkedEnv; } // {
|
||
builder = attrs.realBuilder or stdenv.shell;
|
||
args = attrs.args or ["-e" (attrs.builder or ./default-builder.sh)];
|
||
inherit stdenv;
|
||
|
||
# The `system` attribute of a derivation has special meaning to Nix.
|
||
# Derivations set it to choose what sort of machine could be used to
|
||
# execute the build, The build platform entirely determines this,
|
||
# indeed more finely than Nix knows or cares about. The `system`
|
||
# attribute of `buildPlatfom` matches Nix's degree of specificity.
|
||
# exactly.
|
||
inherit (stdenv.buildPlatform) system;
|
||
|
||
userHook = config.stdenv.userHook or null;
|
||
__ignoreNulls = true;
|
||
inherit __structuredAttrs strictDeps;
|
||
|
||
depsBuildBuild = lib.elemAt (lib.elemAt dependencies 0) 0;
|
||
nativeBuildInputs = lib.elemAt (lib.elemAt dependencies 0) 1;
|
||
depsBuildTarget = lib.elemAt (lib.elemAt dependencies 0) 2;
|
||
depsHostHost = lib.elemAt (lib.elemAt dependencies 1) 0;
|
||
buildInputs = lib.elemAt (lib.elemAt dependencies 1) 1;
|
||
depsTargetTarget = lib.elemAt (lib.elemAt dependencies 2) 0;
|
||
|
||
depsBuildBuildPropagated = lib.elemAt (lib.elemAt propagatedDependencies 0) 0;
|
||
propagatedNativeBuildInputs = lib.elemAt (lib.elemAt propagatedDependencies 0) 1;
|
||
depsBuildTargetPropagated = lib.elemAt (lib.elemAt propagatedDependencies 0) 2;
|
||
depsHostHostPropagated = lib.elemAt (lib.elemAt propagatedDependencies 1) 0;
|
||
propagatedBuildInputs = lib.elemAt (lib.elemAt propagatedDependencies 1) 1;
|
||
depsTargetTargetPropagated = lib.elemAt (lib.elemAt propagatedDependencies 2) 0;
|
||
|
||
# This parameter is sometimes a string, sometimes null, and sometimes a list, yuck
|
||
configureFlags = let inherit (lib) optional elem; in
|
||
configureFlags
|
||
++ optional (elem "build" configurePlatforms) "--build=${stdenv.buildPlatform.config}"
|
||
++ optional (elem "host" configurePlatforms) "--host=${stdenv.hostPlatform.config}"
|
||
++ optional (elem "target" configurePlatforms) "--target=${stdenv.targetPlatform.config}";
|
||
|
||
cmakeFlags =
|
||
cmakeFlags
|
||
++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) ([
|
||
"-DCMAKE_SYSTEM_NAME=${lib.findFirst lib.isString "Generic" (lib.optional (!stdenv.hostPlatform.isRedox) stdenv.hostPlatform.uname.system)}"
|
||
] ++ lib.optionals (stdenv.hostPlatform.uname.processor != null) [
|
||
"-DCMAKE_SYSTEM_PROCESSOR=${stdenv.hostPlatform.uname.processor}"
|
||
] ++ lib.optionals (stdenv.hostPlatform.uname.release != null) [
|
||
"-DCMAKE_SYSTEM_VERSION=${stdenv.hostPlatform.uname.release}"
|
||
] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
|
||
"-DCMAKE_OSX_ARCHITECTURES=${stdenv.hostPlatform.darwinArch}"
|
||
] ++ lib.optionals (stdenv.buildPlatform.uname.system != null) [
|
||
"-DCMAKE_HOST_SYSTEM_NAME=${stdenv.buildPlatform.uname.system}"
|
||
] ++ lib.optionals (stdenv.buildPlatform.uname.processor != null) [
|
||
"-DCMAKE_HOST_SYSTEM_PROCESSOR=${stdenv.buildPlatform.uname.processor}"
|
||
] ++ lib.optionals (stdenv.buildPlatform.uname.release != null) [
|
||
"-DCMAKE_HOST_SYSTEM_VERSION=${stdenv.buildPlatform.uname.release}"
|
||
]);
|
||
|
||
mesonFlags =
|
||
let
|
||
# See https://mesonbuild.com/Reference-tables.html#cpu-families
|
||
cpuFamily = platform: with platform;
|
||
/**/ if isAarch32 then "arm"
|
||
else if isx86_32 then "x86"
|
||
else platform.uname.processor;
|
||
|
||
crossFile = builtins.toFile "cross-file.conf" ''
|
||
[properties]
|
||
needs_exe_wrapper = ${lib.boolToString (!stdenv.buildPlatform.canExecute stdenv.hostPlatform)}
|
||
|
||
[host_machine]
|
||
system = '${stdenv.targetPlatform.parsed.kernel.name}'
|
||
cpu_family = '${cpuFamily stdenv.targetPlatform}'
|
||
cpu = '${stdenv.targetPlatform.parsed.cpu.name}'
|
||
endian = ${if stdenv.targetPlatform.isLittleEndian then "'little'" else "'big'"}
|
||
|
||
[binaries]
|
||
llvm-config = 'llvm-config-native'
|
||
'';
|
||
crossFlags = lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [ "--cross-file=${crossFile}" ];
|
||
in crossFlags ++ mesonFlags;
|
||
|
||
inherit patches;
|
||
|
||
inherit doCheck doInstallCheck;
|
||
|
||
inherit outputs;
|
||
} // lib.optionalAttrs (__contentAddressed) {
|
||
inherit __contentAddressed;
|
||
# Provide default values for outputHashMode and outputHashAlgo because
|
||
# most people won't care about these anyways
|
||
outputHashAlgo = attrs.outputHashAlgo or "sha256";
|
||
outputHashMode = attrs.outputHashMode or "recursive";
|
||
} // lib.optionalAttrs (enableParallelBuilding) {
|
||
inherit enableParallelBuilding;
|
||
enableParallelChecking = attrs.enableParallelChecking or true;
|
||
enableParallelInstalling = attrs.enableParallelInstalling or true;
|
||
} // lib.optionalAttrs (hardeningDisable != [] || hardeningEnable != [] || stdenv.hostPlatform.isMusl) {
|
||
NIX_HARDENING_ENABLE = enabledHardeningOptions;
|
||
} // lib.optionalAttrs (stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform ? gcc.arch) {
|
||
requiredSystemFeatures = attrs.requiredSystemFeatures or [] ++ [ "gccarch-${stdenv.hostPlatform.gcc.arch}" ];
|
||
} // lib.optionalAttrs (stdenv.buildPlatform.isDarwin) {
|
||
inherit __darwinAllowLocalNetworking;
|
||
# TODO: remove lib.unique once nix has a list canonicalization primitive
|
||
__sandboxProfile =
|
||
let profiles = [ stdenv.extraSandboxProfile ] ++ computedSandboxProfile ++ computedPropagatedSandboxProfile ++ [ propagatedSandboxProfile sandboxProfile ];
|
||
final = lib.concatStringsSep "\n" (lib.filter (x: x != "") (lib.unique profiles));
|
||
in final;
|
||
__propagatedSandboxProfile = lib.unique (computedPropagatedSandboxProfile ++ [ propagatedSandboxProfile ]);
|
||
__impureHostDeps = computedImpureHostDeps ++ computedPropagatedImpureHostDeps ++ __propagatedImpureHostDeps ++ __impureHostDeps ++ stdenv.__extraImpureHostDeps ++ [
|
||
"/dev/zero"
|
||
"/dev/random"
|
||
"/dev/urandom"
|
||
"/bin/sh"
|
||
];
|
||
__propagatedImpureHostDeps = computedPropagatedImpureHostDeps ++ __propagatedImpureHostDeps;
|
||
} //
|
||
# If we use derivations directly here, they end up as build-time dependencies.
|
||
# This is especially problematic in the case of disallowed*, since the disallowed
|
||
# derivations will be built by nix as build-time dependencies, while those
|
||
# derivations might take a very long time to build, or might not even build
|
||
# successfully on the platform used.
|
||
# We can improve on this situation by instead passing only the outPath,
|
||
# without an attached string context, to nix. The out path will be a placeholder
|
||
# which will be replaced by the actual out path if the derivation in question
|
||
# is part of the final closure (and thus needs to be built). If it is not
|
||
# part of the final closure, then the placeholder will be passed along,
|
||
# but in that case we know for a fact that the derivation is not part of the closure.
|
||
# This means that passing the out path to nix does the right thing in either
|
||
# case, both for disallowed and allowed references/requisites, and we won't
|
||
# build the derivation if it wouldn't be part of the closure, saving time and resources.
|
||
# While the problem is less severe for allowed*, since we want the derivation
|
||
# to be built eventually, we would still like to get the error early and without
|
||
# having to wait while nix builds a derivation that might not be used.
|
||
# See also https://github.com/NixOS/nix/issues/4629
|
||
lib.optionalAttrs (attrs ? disallowedReferences) {
|
||
disallowedReferences =
|
||
map unsafeDerivationToUntrackedOutpath attrs.disallowedReferences;
|
||
} //
|
||
lib.optionalAttrs (attrs ? disallowedRequisites) {
|
||
disallowedRequisites =
|
||
map unsafeDerivationToUntrackedOutpath attrs.disallowedRequisites;
|
||
} //
|
||
lib.optionalAttrs (attrs ? allowedReferences) {
|
||
allowedReferences =
|
||
lib.mapNullable unsafeDerivationToUntrackedOutpath attrs.allowedReferences;
|
||
} //
|
||
lib.optionalAttrs (attrs ? allowedRequisites) {
|
||
allowedRequisites =
|
||
lib.mapNullable unsafeDerivationToUntrackedOutpath attrs.allowedRequisites;
|
||
};
|
||
|
||
meta = checkMeta.commonMeta { inherit validity attrs pos references; };
|
||
validity = checkMeta.assertValidity { inherit meta attrs; };
|
||
|
||
checkedEnv =
|
||
let
|
||
overlappingNames = lib.attrNames (builtins.intersectAttrs env derivationArg);
|
||
in
|
||
assert lib.assertMsg envIsExportable
|
||
"When using structured attributes, `env` must be an attribute set of environment variables.";
|
||
assert lib.assertMsg (overlappingNames == [ ])
|
||
"The ‘env’ attribute set cannot contain any attributes passed to derivation. The following attributes are overlapping: ${lib.concatStringsSep ", " overlappingNames}";
|
||
lib.mapAttrs
|
||
(n: v: assert lib.assertMsg (lib.isString v || lib.isBool v || lib.isInt v || lib.isDerivation v)
|
||
"The ‘env’ attribute set can only contain derivation, string, boolean or integer attributes. The ‘${n}’ attribute is of type ${builtins.typeOf v}."; v)
|
||
env;
|
||
|
||
in
|
||
|
||
lib.extendDerivation
|
||
validity.handled
|
||
({
|
||
# A derivation that always builds successfully and whose runtime
|
||
# dependencies are the original derivations build time dependencies
|
||
# This allows easy building and distributing of all derivations
|
||
# needed to enter a nix-shell with
|
||
# nix-build shell.nix -A inputDerivation
|
||
inputDerivation = derivation (derivationArg // {
|
||
# Add a name in case the original drv didn't have one
|
||
name = derivationArg.name or "inputDerivation";
|
||
# This always only has one output
|
||
outputs = [ "out" ];
|
||
|
||
# Propagate the original builder and arguments, since we override
|
||
# them and they might contain references to build inputs
|
||
_derivation_original_builder = derivationArg.builder;
|
||
_derivation_original_args = derivationArg.args;
|
||
|
||
builder = stdenv.shell;
|
||
# The bash builtin `export` dumps all current environment variables,
|
||
# which is where all build input references end up (e.g. $PATH for
|
||
# binaries). By writing this to $out, Nix can find and register
|
||
# them as runtime dependencies (since Nix greps for store paths
|
||
# through $out to find them)
|
||
args = [ "-c" ''
|
||
export > $out
|
||
for var in $passAsFile; do
|
||
pathVar="''${var}Path"
|
||
printf "%s" "$(< "''${!pathVar}")" >> $out
|
||
done
|
||
'' ];
|
||
|
||
# inputDerivation produces the inputs; not the outputs, so any
|
||
# restrictions on what used to be the outputs don't serve a purpose
|
||
# anymore.
|
||
allowedReferences = null;
|
||
allowedRequisites = null;
|
||
disallowedReferences = [ ];
|
||
disallowedRequisites = [ ];
|
||
});
|
||
|
||
inherit passthru overrideAttrs;
|
||
inherit meta;
|
||
} //
|
||
# Pass through extra attributes that are not inputs, but
|
||
# should be made available to Nix expressions using the
|
||
# derivation (e.g., in assertions).
|
||
passthru)
|
||
(derivation (derivationArg // lib.optionalAttrs envIsExportable checkedEnv));
|
||
|
||
in
|
||
fnOrAttrs:
|
||
if builtins.isFunction fnOrAttrs
|
||
then makeDerivationExtensible fnOrAttrs
|
||
else makeDerivationExtensibleConst fnOrAttrs
|