0da7fadce3
Commit 262c21ed46 purported to enable
ignoreNulls, but it was bogus because it set the flag on the wrong
derivation (i.e. stdenv rather than the result of mkDerivation).
192 lines
7.5 KiB
Nix
192 lines
7.5 KiB
Nix
let lib = import ../../../lib; in lib.makeOverridable (
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{ system, name ? "stdenv", preHook ? "", initialPath, gcc, shell
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, extraAttrs ? {}, overrides ? (pkgs: {}), 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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, skipPaxMarking ? false
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}:
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let
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allowUnfree = config.allowUnfree or false || builtins.getEnv "NIXPKGS_ALLOW_UNFREE" == "1";
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# Alow granular checks to allow only some unfree packages
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# Example:
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# {pkgs, ...}:
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# {
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# allowUnfree = false;
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# allowUnfreePredicate = (x: pkgs.lib.hasPrefix "flashplayero-" x.name);
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# }
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allowUnfreePredicate = config.allowUnfreePredicate or (x: false);
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allowBroken = config.allowBroken or false || builtins.getEnv "NIXPKGS_ALLOW_BROKEN" == "1";
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unsafeGetAttrPos = builtins.unsafeGetAttrPos or (n: as: null);
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# The stdenv that we are producing.
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result =
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derivation {
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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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/* TODO: special-cased @var@ substitutions are ugly.
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However, using substituteAll* from setup.sh seems difficult,
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as setup.sh can't be directly sourced.
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Suggestion: split similar utility functions into a separate script.
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*/
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setup = setupScript;
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inherit preHook initialPath gcc shell;
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# Whether we should run paxctl to pax-mark binaries
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needsPax = result.isLinux && !skipPaxMarking;
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propagatedUserEnvPkgs = [gcc] ++
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lib.filter lib.isDerivation initialPath;
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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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};
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# Add a utility function to produce derivations that use this
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# stdenv and its shell.
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mkDerivation = attrs:
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let
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pos =
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if attrs.meta.description or null != null then
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unsafeGetAttrPos "description" attrs.meta
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else
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unsafeGetAttrPos "name" attrs;
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pos' = if pos != null then "‘" + pos.file + ":" + toString pos.line + "’" else "«unknown-file»";
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in
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if !allowUnfree && (let l = lib.lists.toList attrs.meta.license or []; in lib.lists.elem "unfree" l || lib.lists.elem "unfree-redistributable" l) && !(allowUnfreePredicate attrs) then
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throw ''
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Package ‘${attrs.name}’ in ${pos'} has an unfree license, refusing to evaluate. You can set
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{ nixpkgs.config.allowUnfree = true; }
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in configuration.nix to override this. If you use Nix standalone, you can add
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{ allowUnfree = true; }
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to ~/.nixpkgs/config.nix.''
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else if !allowBroken && attrs.meta.broken or false then
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throw "you can't use package ‘${attrs.name}’ in ${pos'} because it has been marked as broken"
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else if !allowBroken && attrs.meta.platforms or null != null && !lib.lists.elem result.system attrs.meta.platforms then
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throw "the package ‘${attrs.name}’ in ${pos'} is not supported on ‘${result.system}’"
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else
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lib.addPassthru (derivation (
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(removeAttrs attrs ["meta" "passthru" "crossAttrs"])
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// (let
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buildInputs = attrs.buildInputs or [];
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nativeBuildInputs = attrs.nativeBuildInputs or [];
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propagatedBuildInputs = attrs.propagatedBuildInputs or [];
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propagatedNativeBuildInputs = attrs.propagatedNativeBuildInputs or [];
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crossConfig = attrs.crossConfig or null;
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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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# Inputs built by the cross compiler.
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buildInputs = lib.optionals (crossConfig != null) (buildInputs ++ extraBuildInputs);
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propagatedBuildInputs = lib.optionals (crossConfig != null) propagatedBuildInputs;
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# Inputs built by the usual native compiler.
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nativeBuildInputs = nativeBuildInputs ++ lib.optionals (crossConfig == null) (buildInputs ++ extraBuildInputs);
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propagatedNativeBuildInputs = propagatedNativeBuildInputs ++
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lib.optionals (crossConfig == null) propagatedBuildInputs;
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}))) (
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{
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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
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# queries. We also a meta.position attribute here to
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# identify the source location of the package.
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meta = attrs.meta or {} // (if pos != null then {
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position = pos.file + ":" + (toString pos.line);
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} else {});
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passthru = attrs.passthru or {};
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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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(attrs.passthru or {}));
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# Utility flags to test the type of platform.
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isDarwin = system == "x86_64-darwin";
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isLinux = system == "i686-linux"
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|| system == "x86_64-linux"
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|| system == "powerpc-linux"
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|| system == "armv5tel-linux"
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|| system == "armv6l-linux"
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|| system == "armv7l-linux"
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|| system == "mips64el-linux";
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isGNU = system == "i686-gnu"; # GNU/Hurd
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isGlibc = isGNU # useful for `stdenvNative'
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|| isLinux
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|| system == "x86_64-kfreebsd-gnu";
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isSunOS = system == "i686-solaris"
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|| system == "x86_64-solaris";
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isCygwin = system == "i686-cygwin";
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isFreeBSD = system == "i686-freebsd"
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|| system == "x86_64-freebsd";
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isOpenBSD = system == "i686-openbsd"
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|| system == "x86_64-openbsd";
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isBSD = system == "i686-freebsd"
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|| system == "x86_64-freebsd"
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|| system == "i686-openbsd"
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|| system == "x86_64-openbsd";
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isi686 = system == "i686-linux"
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|| system == "i686-gnu"
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|| system == "i686-freebsd"
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|| system == "i686-openbsd"
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|| system == "i386-sunos";
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isx86_64 = system == "x86_64-linux"
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|| system == "x86_64-darwin"
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|| system == "x86_64-freebsd"
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|| system == "x86_64-openbsd"
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|| system == "x86_64-solaris";
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is64bit = system == "x86_64-linux"
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|| system == "x86_64-darwin"
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|| system == "x86_64-freebsd"
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|| system == "x86_64-openbsd"
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|| system == "x86_64-solaris";
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isMips = system == "mips-linux"
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|| system == "mips64el-linux";
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isArm = system == "armv5tel-linux"
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|| system == "armv6l-linux"
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|| system == "armv7l-linux";
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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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}
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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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