87651b32fe
Note that a bunch of non-python packages use this attribute already. Some of those are clearly unaware of the fact that this attribute does not exists in stdenv because they define it but don't to add it to their `bulidInputs` :) Also note that I use `buildInputs` here and only handle regular builds because python and haskell builders do it this way and I'm not sure how to properly handle the cross-compilation case.
283 lines
12 KiB
Nix
283 lines
12 KiB
Nix
{ lib, config, stdenv }:
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rec {
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# `mkDerivation` wraps the builtin `derivation` function to
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# produce derivations that use this stdenv and its shell.
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#
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# See also:
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#
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# * https://nixos.org/nixpkgs/manual/#sec-using-stdenv
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# Details on how to use this mkDerivation function
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#
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# * https://nixos.org/nix/manual/#ssec-derivation
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# Explanation about derivations in general
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mkDerivation =
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{ name ? ""
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# These types of dependencies are all exhaustively documented in
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# the "Specifying Dependencies" section of the "Standard
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# Environment" chapter of the Nixpkgs manual.
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# TODO(@Ericson2314): Stop using legacy dep attribute names
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# host offset -> target offset
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, depsBuildBuild ? [] # -1 -> -1
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, depsBuildBuildPropagated ? [] # -1 -> -1
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, nativeBuildInputs ? [] # -1 -> 0 N.B. Legacy name
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, propagatedNativeBuildInputs ? [] # -1 -> 0 N.B. Legacy name
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, depsBuildTarget ? [] # -1 -> 1
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, depsBuildTargetPropagated ? [] # -1 -> 1
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, depsHostHost ? [] # 0 -> 0
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, depsHostHostPropagated ? [] # 0 -> 0
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, buildInputs ? [] # 0 -> 1 N.B. Legacy name
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, propagatedBuildInputs ? [] # 0 -> 1 N.B. Legacy name
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, depsTargetTarget ? [] # 1 -> 1
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, depsTargetTargetPropagated ? [] # 1 -> 1
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, checkInputs ? []
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, installCheckInputs ? []
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# Configure Phase
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, configureFlags ? []
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, # Target is not included by default because most programs don't care.
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# Including it then would cause needless mass rebuilds.
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#
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# TODO(@Ericson2314): Make [ "build" "host" ] always the default.
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configurePlatforms ? lib.optionals
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(stdenv.hostPlatform != stdenv.buildPlatform)
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[ "build" "host" ]
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# TODO(@Ericson2314): Make unconditional / resolve #33599
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# Check phase
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, doCheck ? config.doCheckByDefault or false
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# TODO(@Ericson2314): Make unconditional / resolve #33599
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# InstallCheck phase
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, doInstallCheck ? config.doCheckByDefault or false
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, crossConfig ? null
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, meta ? {}
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, passthru ? {}
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, pos ? # position used in error messages and for meta.position
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(if attrs.meta.description or null != null
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then builtins.unsafeGetAttrPos "description" attrs.meta
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else builtins.unsafeGetAttrPos "name" attrs)
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, separateDebugInfo ? false
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, outputs ? [ "out" ]
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, __impureHostDeps ? []
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, __propagatedImpureHostDeps ? []
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, sandboxProfile ? ""
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, propagatedSandboxProfile ? ""
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, hardeningEnable ? []
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, hardeningDisable ? []
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, ... } @ attrs:
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# TODO(@Ericson2314): Make this more modular, and not O(n^2).
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let
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supportedHardeningFlags = [ "fortify" "stackprotector" "pie" "pic" "strictoverflow" "format" "relro" "bindnow" ];
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defaultHardeningFlags = lib.remove "pie" supportedHardeningFlags;
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enabledHardeningOptions =
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if builtins.elem "all" hardeningDisable
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then []
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else lib.subtractLists hardeningDisable (defaultHardeningFlags ++ hardeningEnable);
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# hardeningDisable additionally supports "all".
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erroneousHardeningFlags = lib.subtractLists supportedHardeningFlags (hardeningEnable ++ lib.remove "all" hardeningDisable);
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in if builtins.length erroneousHardeningFlags != 0
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then abort ("mkDerivation was called with unsupported hardening flags: " + lib.generators.toPretty {} {
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inherit erroneousHardeningFlags hardeningDisable hardeningEnable supportedHardeningFlags;
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})
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else let
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references = nativeBuildInputs ++ buildInputs
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++ propagatedNativeBuildInputs ++ propagatedBuildInputs;
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dependencies = map (map lib.chooseDevOutputs) [
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[
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(map (drv: drv.__spliced.buildBuild or drv) depsBuildBuild)
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(map (drv: drv.nativeDrv or drv) nativeBuildInputs
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++ lib.optional separateDebugInfo ../../build-support/setup-hooks/separate-debug-info.sh
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++ lib.optional stdenv.hostPlatform.isWindows ../../build-support/setup-hooks/win-dll-link.sh)
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(map (drv: drv.__spliced.buildTarget or drv) depsBuildTarget)
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]
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[
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(map (drv: drv.__spliced.hostHost or drv) depsHostHost)
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(map (drv: drv.crossDrv or drv) (buildInputs
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++ lib.optionals doCheck' checkInputs
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++ lib.optionals doInstallCheck' installCheckInputs))
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]
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[
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(map (drv: drv.__spliced.targetTarget or drv) depsTargetTarget)
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]
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];
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propagatedDependencies = map (map lib.chooseDevOutputs) [
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[
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(map (drv: drv.__spliced.buildBuild or drv) depsBuildBuildPropagated)
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(map (drv: drv.nativeDrv or drv) propagatedNativeBuildInputs)
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(map (drv: drv.__spliced.buildTarget or drv) depsBuildTargetPropagated)
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]
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[
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(map (drv: drv.__spliced.hostHost or drv) depsHostHostPropagated)
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(map (drv: drv.crossDrv or drv) propagatedBuildInputs)
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]
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[
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(map (drv: drv.__spliced.targetTarget or drv) depsTargetTargetPropagated)
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]
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];
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# TODO(@oxij, @Ericson2314): This is here to keep the old semantics, remove when
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# no package has `doCheck = true`.
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doCheck' = doCheck && stdenv.hostPlatform == stdenv.buildPlatform;
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doInstallCheck' = doInstallCheck && stdenv.hostPlatform == stdenv.buildPlatform;
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outputs' =
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outputs ++
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(if separateDebugInfo then assert stdenv.hostPlatform.isLinux; [ "debug" ] else []);
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computedSandboxProfile =
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lib.concatMap (input: input.__propagatedSandboxProfile or [])
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(stdenv.extraNativeBuildInputs
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++ stdenv.extraBuildInputs
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++ lib.concatLists dependencies);
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computedPropagatedSandboxProfile =
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lib.concatMap (input: input.__propagatedSandboxProfile or [])
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(lib.concatLists propagatedDependencies);
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computedImpureHostDeps =
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lib.unique (lib.concatMap (input: input.__propagatedImpureHostDeps or [])
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(stdenv.extraNativeBuildInputs
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++ stdenv.extraBuildInputs
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++ lib.concatLists dependencies));
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computedPropagatedImpureHostDeps =
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lib.unique (lib.concatMap (input: input.__propagatedImpureHostDeps or [])
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(lib.concatLists propagatedDependencies));
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derivationArg =
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(removeAttrs attrs
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["meta" "passthru" "crossAttrs" "pos"
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"doCheck" "doInstallCheck"
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"checkInputs" "installCheckInputs"
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"__impureHostDeps" "__propagatedImpureHostDeps"
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"sandboxProfile" "propagatedSandboxProfile"])
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// {
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# A hack to make `nix-env -qa` and `nix search` ignore broken packages.
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# TODO(@oxij): remove this assert when something like NixOS/nix#1771 gets merged into nix.
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name = assert validity.handled; name + lib.optionalString
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(stdenv.hostPlatform != stdenv.buildPlatform)
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("-" + stdenv.hostPlatform.config);
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builder = attrs.realBuilder or stdenv.shell;
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args = attrs.args or ["-e" (attrs.builder or ./default-builder.sh)];
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inherit stdenv;
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inherit (stdenv) system;
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userHook = config.stdenv.userHook or null;
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__ignoreNulls = true;
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depsBuildBuild = lib.elemAt (lib.elemAt dependencies 0) 0;
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nativeBuildInputs = lib.elemAt (lib.elemAt dependencies 0) 1;
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depsBuildTarget = lib.elemAt (lib.elemAt dependencies 0) 2;
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depsHostBuild = lib.elemAt (lib.elemAt dependencies 1) 0;
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buildInputs = lib.elemAt (lib.elemAt dependencies 1) 1;
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depsTargetTarget = lib.elemAt (lib.elemAt dependencies 2) 0;
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depsBuildBuildPropagated = lib.elemAt (lib.elemAt propagatedDependencies 0) 0;
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propagatedNativeBuildInputs = lib.elemAt (lib.elemAt propagatedDependencies 0) 1;
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depsBuildTargetPropagated = lib.elemAt (lib.elemAt propagatedDependencies 0) 2;
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depsHostBuildPropagated = lib.elemAt (lib.elemAt propagatedDependencies 1) 0;
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propagatedBuildInputs = lib.elemAt (lib.elemAt propagatedDependencies 1) 1;
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depsTargetTargetPropagated = lib.elemAt (lib.elemAt propagatedDependencies 2) 0;
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# This parameter is sometimes a string, sometimes null, and sometimes a list, yuck
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configureFlags = let inherit (lib) optional elem; in
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(/**/ if lib.isString configureFlags then [configureFlags]
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else if configureFlags == null then []
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else configureFlags)
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++ optional (elem "build" configurePlatforms) "--build=${stdenv.buildPlatform.config}"
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++ optional (elem "host" configurePlatforms) "--host=${stdenv.hostPlatform.config}"
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++ optional (elem "target" configurePlatforms) "--target=${stdenv.targetPlatform.config}";
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} // lib.optionalAttrs (hardeningDisable != [] || hardeningEnable != []) {
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NIX_HARDENING_ENABLE = enabledHardeningOptions;
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} // lib.optionalAttrs (outputs' != [ "out" ]) {
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outputs = outputs';
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} // lib.optionalAttrs doCheck' {
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doCheck = true;
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} // lib.optionalAttrs doInstallCheck' {
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doInstallCheck = true;
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} // lib.optionalAttrs (stdenv.buildPlatform.isDarwin) {
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# TODO: remove lib.unique once nix has a list canonicalization primitive
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__sandboxProfile =
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let profiles = [ stdenv.extraSandboxProfile ] ++ computedSandboxProfile ++ computedPropagatedSandboxProfile ++ [ propagatedSandboxProfile sandboxProfile ];
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final = lib.concatStringsSep "\n" (lib.filter (x: x != "") (lib.unique profiles));
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in final;
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__propagatedSandboxProfile = lib.unique (computedPropagatedSandboxProfile ++ [ propagatedSandboxProfile ]);
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__impureHostDeps = computedImpureHostDeps ++ computedPropagatedImpureHostDeps ++ __propagatedImpureHostDeps ++ __impureHostDeps ++ stdenv.__extraImpureHostDeps ++ [
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"/dev/zero"
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"/dev/random"
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"/dev/urandom"
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"/bin/sh"
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];
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__propagatedImpureHostDeps = computedPropagatedImpureHostDeps ++ __propagatedImpureHostDeps;
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};
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validity = import ./check-meta.nix {
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inherit lib config meta;
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# Nix itself uses the `system` field of a derivation to decide where
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# to build it. This is a bit confusing for cross compilation.
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inherit (stdenv) hostPlatform;
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} attrs;
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# The meta attribute is passed in the resulting attribute set,
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# but it's not part of the actual derivation, i.e., it's not
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# passed to the builder and is not a dependency. But since we
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# include it in the result, it *is* available to nix-env for queries.
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meta = {
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# `name` above includes cross-compilation cruft (and is under assert),
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# lets have a clean always accessible version here.
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inherit name;
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# If the packager hasn't specified `outputsToInstall`, choose a default,
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# which is the name of `p.bin or p.out or p`;
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# if he has specified it, it will be overridden below in `// meta`.
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# Note: This default probably shouldn't be globally configurable.
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# Services and users should specify outputs explicitly,
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# unless they are comfortable with this default.
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outputsToInstall =
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let
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outs = outputs'; # the value passed to derivation primitive
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hasOutput = out: builtins.elem out outs;
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in [( lib.findFirst hasOutput null (["bin" "out"] ++ outs) )];
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}
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// attrs.meta or {}
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# Fill `meta.position` to identify the source location of the package.
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// lib.optionalAttrs (pos != null) {
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position = pos.file + ":" + toString pos.line;
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# Expose the result of the checks for everyone to see.
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} // {
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available = validity.valid
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&& (if config.checkMetaRecursively or false
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then lib.all (d: d.meta.available or true) references
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else true);
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};
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in
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lib.extendDerivation
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validity.handled
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({
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overrideAttrs = f: mkDerivation (attrs // (f attrs));
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inherit meta passthru;
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} //
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# Pass through extra attributes that are not inputs, but
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# should be made available to Nix expressions using the
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# derivation (e.g., in assertions).
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passthru)
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(derivation derivationArg);
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}
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