250 lines
9.4 KiB
Nix
250 lines
9.4 KiB
Nix
let lib = import ../../../lib; in lib.makeOverridable (
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{ system, name ? "stdenv", preHook ? "", initialPath, cc, shell
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, allowedRequisites ? null, 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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}:
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let
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allowUnfree = config.allowUnfree or false || builtins.getEnv "NIXPKGS_ALLOW_UNFREE" == "1";
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whitelist = config.whitelistedLicenses or [];
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blacklist = config.blacklistedLicenses or [];
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onlyLicenses = list:
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lib.lists.all (license:
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let l = lib.licenses.${license.shortName or "BROKEN"} or false; in
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if license == l then true else
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throw ''‘${builtins.toJSON license}’ is not an attribute of lib.licenses''
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) list;
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mutuallyExclusive = a: b:
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(builtins.length a) == 0 ||
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(!(builtins.elem (builtins.head a) b) &&
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mutuallyExclusive (builtins.tail a) b);
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areLicenseListsValid =
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if mutuallyExclusive whitelist blacklist then
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assert onlyLicenses whitelist; assert onlyLicenses blacklist; true
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else
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throw "whitelistedLicenses and blacklistedLicenses are not mutually exclusive.";
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hasLicense = attrs:
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builtins.hasAttr "meta" attrs && builtins.hasAttr "license" attrs.meta;
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hasWhitelistedLicense = assert areLicenseListsValid; attrs:
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hasLicense attrs && builtins.elem attrs.meta.license whitelist;
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hasBlacklistedLicense = assert areLicenseListsValid; attrs:
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hasLicense attrs && builtins.elem attrs.meta.license blacklist;
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allowBroken = config.allowBroken or false || builtins.getEnv "NIXPKGS_ALLOW_BROKEN" == "1";
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isUnfree = licenses: lib.lists.any (l:
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!l.free or true || l == "unfree" || l == "unfree-redistributable") licenses;
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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 "flashplayer-" x.name);
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# }
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allowUnfreePredicate = config.allowUnfreePredicate or (x: false);
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# Check whether unfree packages are allowed and if not, whether the
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# package has an unfree license and is not explicitely allowed by the
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# `allowUNfreePredicate` function.
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hasDeniedUnfreeLicense = attrs:
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!allowUnfree &&
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hasLicense attrs &&
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isUnfree (lib.lists.toList attrs.meta.license) &&
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!allowUnfreePredicate attrs;
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unsafeGetAttrPos = builtins.unsafeGetAttrPos or (n: as: null);
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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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../../build-support/setup-hooks/move-sbin.sh
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../../build-support/setup-hooks/move-lib64.sh
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cc
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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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throwEvalHelp = unfreeOrBroken: whatIsWrong:
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assert builtins.elem unfreeOrBroken ["Unfree" "Broken" "blacklisted"];
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throw ("Package ‘${attrs.name or "«name-missing»"}’ in ${pos'} ${whatIsWrong}, refusing to evaluate."
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+ (lib.strings.optionalString (unfreeOrBroken != "blacklisted") ''
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For `nixos-rebuild` you can set
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{ nixpkgs.config.allow${unfreeOrBroken} = true; }
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in configuration.nix to override this.
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For `nix-env` you can add
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{ allow${unfreeOrBroken} = true; }
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to ~/.nixpkgs/config.nix.
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''));
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licenseAllowed = attrs:
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if hasDeniedUnfreeLicense attrs && !(hasWhitelistedLicense attrs) then
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throwEvalHelp "Unfree" "has an unfree license ‘${builtins.toJSON attrs.meta.license}’ which is not whitelisted"
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else if hasBlacklistedLicense attrs then
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throwEvalHelp "blacklisted" "has the ‘${builtins.toJSON attrs.meta.license}’ license which is blacklisted"
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else if !allowBroken && attrs.meta.broken or false then
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throwEvalHelp "Broken" "is marked as broken"
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else if !allowBroken && attrs.meta.platforms or null != null && !lib.lists.elem result.system attrs.meta.platforms then
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throwEvalHelp "Broken" "is not supported on ‘${result.system}’"
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else true;
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in
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assert licenseAllowed attrs;
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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 = if crossConfig != null then buildInputs else [];
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propagatedBuildInputs = if crossConfig != null then propagatedBuildInputs else [];
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# Inputs built by the usual native compiler.
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nativeBuildInputs = nativeBuildInputs ++ (if crossConfig == null then buildInputs else []);
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propagatedNativeBuildInputs = propagatedNativeBuildInputs ++
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(if crossConfig == null then propagatedBuildInputs else []);
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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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# 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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// rec {
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meta.description = "The default build environment for Unix packages in Nixpkgs";
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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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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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isBigEndian = system == "powerpc-linux";
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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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