e8e57452f4
Only cosmetic changes are done otherwise. Real refactoring is left for later. There's a small slow-down on my machine: $ time nix-env -qa -P >/dev/null gets from ~2.8 to ~3.5 seconds (negligible change in RAM). That's most likely caused by sharing less computation between different mkDerivation calls, and I plan to improve that soon.
251 lines
9.6 KiB
Nix
251 lines
9.6 KiB
Nix
let lib = import ../../../lib; in lib.makeOverridable (
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{ name ? "stdenv", preHook ? "", initialPath, cc, shell
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, allowedRequisites ? null, extraAttrs ? {}, overrides ? (self: super: {}), config
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, # The `fetchurl' to use for downloading curl and its dependencies
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# (see all-packages.nix).
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fetchurlBoot
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, setupScript ? ./setup.sh
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, extraBuildInputs ? []
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, __stdenvImpureHostDeps ? []
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, __extraImpureHostDeps ? []
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, stdenvSandboxProfile ? ""
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, extraSandboxProfile ? ""
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, # The platforms here do *not* correspond to the stage the stdenv is
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# used in, but rather the previous one, in which it was built. We
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# use the latter two platforms, like a cross compiler, because the
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# stand environment is a build tool if you squint at it, and because
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# neither of these are used when building stdenv so we know the
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# build platform is irrelevant.
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hostPlatform, targetPlatform
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}:
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let
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inherit (targetPlatform) system;
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ifDarwin = attrs: if system == "x86_64-darwin" then attrs else {};
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defaultNativeBuildInputs = extraBuildInputs ++
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[ ../../build-support/setup-hooks/move-docs.sh
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../../build-support/setup-hooks/compress-man-pages.sh
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../../build-support/setup-hooks/strip.sh
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../../build-support/setup-hooks/patch-shebangs.sh
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]
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# FIXME this on Darwin; see
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# https://github.com/NixOS/nixpkgs/commit/94d164dd7#commitcomment-22030369
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++ lib.optional result.isLinux ../../build-support/setup-hooks/audit-tmpdir.sh
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++ [
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../../build-support/setup-hooks/multiple-outputs.sh
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../../build-support/setup-hooks/move-sbin.sh
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../../build-support/setup-hooks/move-lib64.sh
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../../build-support/setup-hooks/set-source-date-epoch-to-latest.sh
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cc
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];
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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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{ nativeBuildInputs ? []
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, buildInputs ? []
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, propagatedNativeBuildInputs ? []
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, propagatedBuildInputs ? []
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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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, ... } @ attrs:
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let
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dependencies = [
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(map (drv: drv.nativeDrv or drv) nativeBuildInputs)
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(map (drv: drv.crossDrv or drv) buildInputs)
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];
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propagatedDependencies = [
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(map (drv: drv.nativeDrv or drv) propagatedNativeBuildInputs)
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(map (drv: drv.crossDrv or drv) propagatedBuildInputs)
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];
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in let
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outputs' =
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outputs ++
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(if separateDebugInfo then assert targetPlatform.isLinux; [ "debug" ] else []);
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dependencies' = let
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justMap = map lib.chooseDevOutputs dependencies;
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nativeBuildInputs = lib.elemAt justMap 0
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++ lib.optional targetPlatform.isWindows ../../build-support/setup-hooks/win-dll-link.sh;
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buildInputs = lib.elemAt justMap 1
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# TODO(@Ericson2314): Should instead also be appended to `nativeBuildInputs`.
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++ lib.optional separateDebugInfo ../../build-support/setup-hooks/separate-debug-info.sh;
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in [ nativeBuildInputs buildInputs ];
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propagatedDependencies' = map lib.chooseDevOutputs propagatedDependencies;
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derivationArg =
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(removeAttrs attrs
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["meta" "passthru" "crossAttrs" "pos"
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"__impureHostDeps" "__propagatedImpureHostDeps"
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"sandboxProfile" "propagatedSandboxProfile"])
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// (let
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# TODO(@Ericson2314): Reversing of dep lists is just temporary to avoid Darwin mass rebuild.
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computedSandboxProfile =
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lib.concatMap (input: input.__propagatedSandboxProfile or []) (extraBuildInputs ++ lib.concatLists (lib.reverseList dependencies'));
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computedPropagatedSandboxProfile =
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lib.concatMap (input: input.__propagatedSandboxProfile or []) (lib.concatLists (lib.reverseList propagatedDependencies'));
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computedImpureHostDeps =
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lib.unique (lib.concatMap (input: input.__propagatedImpureHostDeps or []) (extraBuildInputs ++ lib.concatLists (lib.reverseList dependencies')));
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computedPropagatedImpureHostDeps =
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lib.unique (lib.concatMap (input: input.__propagatedImpureHostDeps or []) (lib.concatLists (lib.reverseList propagatedDependencies')));
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in
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{
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builder = attrs.realBuilder or shell;
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args = attrs.args or ["-e" (attrs.builder or ./default-builder.sh)];
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stdenv = result;
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system = result.system;
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userHook = config.stdenv.userHook or null;
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__ignoreNulls = true;
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nativeBuildInputs = lib.elemAt dependencies' 0;
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buildInputs = lib.elemAt dependencies' 1;
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propagatedNativeBuildInputs = lib.elemAt propagatedDependencies' 0;
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propagatedBuildInputs = lib.elemAt propagatedDependencies' 1;
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} // ifDarwin {
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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 = [ 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 ++ __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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} // (if outputs' != [ "out" ] then {
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outputs = outputs';
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} else { }));
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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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# 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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;
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in
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lib.addPassthru
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(derivation (import ./check-meta.nix
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{
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inherit lib config meta derivationArg;
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mkDerivationArg = attrs;
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inherit system; # TODO: cross-compilation?
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}))
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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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# The stdenv that we are producing.
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result =
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derivation (
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(if isNull allowedRequisites then {} else { allowedRequisites = allowedRequisites ++ defaultNativeBuildInputs; }) //
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{
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inherit system name;
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builder = shell;
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args = ["-e" ./builder.sh];
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setup = setupScript;
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inherit preHook initialPath shell defaultNativeBuildInputs;
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}
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// ifDarwin {
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__sandboxProfile = stdenvSandboxProfile;
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__impureHostDeps = __stdenvImpureHostDeps;
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})
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// rec {
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meta = {
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description = "The default build environment for Unix packages in Nixpkgs";
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platforms = lib.platforms.all;
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};
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# Utility flags to test the type of platform.
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inherit (hostPlatform)
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isDarwin isLinux isSunOS isHurd isCygwin isFreeBSD isOpenBSD
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isi686 isx86_64 is64bit isMips isBigEndian;
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isArm = hostPlatform.isArm32;
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isAarch64 = hostPlatform.isArm64;
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# Whether we should run paxctl to pax-mark binaries.
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needsPax = isLinux;
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inherit mkDerivation;
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# For convenience, bring in the library functions in lib/ so
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# packages don't have to do that themselves.
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inherit lib;
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inherit fetchurlBoot;
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inherit overrides;
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inherit cc;
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}
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# Propagate any extra attributes. For instance, we use this to
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# "lift" packages like curl from the final stdenv for Linux to
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# all-packages.nix for that platform (meaning that it has a line
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# like curl = if stdenv ? curl then stdenv.curl else ...).
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// extraAttrs;
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in result)
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