203 lines
7.9 KiB
Nix
203 lines
7.9 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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forceEvalHelp = unfreeOrBroken:
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assert (unfreeOrBroken == "Unfree" || unfreeOrBroken == "Broken");
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''
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You can set
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{ nixpkgs.config.allow${unfreeOrBroken} = true; }
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in configuration.nix to override this. If you use Nix standalone, you can add
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{ allow${unfreeOrBroken} = true; }
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to ~/.nixpkgs/config.nix.
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'';
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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 ${pos'} has an unfree license, refusing to evaluate.
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${forceEvalHelp "Unfree"}''
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else if !allowBroken && attrs.meta.broken or false then
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throw ''
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Package ‘${attrs.name}’ in ${pos'} is marked as broken, refusing to evaluate.
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${forceEvalHelp "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 ''
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Package ‘${attrs.name}’ in ${pos'} is not supported on ‘${result.system}’, refusing to evaluate.
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${forceEvalHelp "Broken"}''
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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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|| system == "x86_64-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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