I have renamed the overlay to “otherPackageSets” because I think that is more descriptive. pkgsLocal has been removed because there were concerns that it would be confusing. None of the other names seemed very useful so I think it is best to avoid it altogether. pkgsCross is still included, hopefully, that will not have as much confusion. pkgsMusl is now available for building Musl packages. It will give you packages bulit with the Musl libc. Also added more documentation. /cc @dezgeg @Ericson2314 @dtzWill
195 lines
7 KiB
Nix
195 lines
7 KiB
Nix
/* This file composes a single bootstrapping stage of the Nix Packages
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collection. That is, it imports the functions that build the various
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packages, and calls them with appropriate arguments. The result is a set of
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all the packages in the Nix Packages collection for some particular platform
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for some particular stage.
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Default arguments are only provided for bootstrapping
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arguments. Normal users should not import this directly but instead
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import `pkgs/default.nix` or `default.nix`. */
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{ ## Misc parameters kept the same for all stages
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##
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# Utility functions, could just import but passing in for efficiency
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lib
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, # Use to reevaluate Nixpkgs; a dirty hack that should be removed
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nixpkgsFun
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## Other parameters
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##
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, # The package set used at build-time. If null, `buildPackages` will
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# be defined internally as the final produced package set itself. This allows
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# us to avoid expensive splicing.
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buildPackages
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, # The package set used in the next stage. If null, `targetPackages` will be
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# defined internally as the final produced package set itself, just like with
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# `buildPackages` and for the same reasons.
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#
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# THIS IS A HACK for compilers that don't think critically about cross-
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# compilation. Please do *not* use unless you really know what you are doing.
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targetPackages
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, # The standard environment to use for building packages.
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stdenv
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, # This is used because stdenv replacement and the stdenvCross do benefit from
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# the overridden configuration provided by the user, as opposed to the normal
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# bootstrapping stdenvs.
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allowCustomOverrides
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, # Non-GNU/Linux OSes are currently "impure" platforms, with their libc
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# outside of the store. Thus, GCC, GFortran, & co. must always look for files
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# in standard system directories (/usr/include, etc.)
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noSysDirs ? stdenv.buildPlatform.system != "x86_64-freebsd"
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&& stdenv.buildPlatform.system != "i686-freebsd"
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&& stdenv.buildPlatform.system != "x86_64-solaris"
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&& stdenv.buildPlatform.system != "x86_64-kfreebsd-gnu"
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, # The configuration attribute set
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config
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, # A list of overlays (Additional `self: super: { .. }` customization
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# functions) to be fixed together in the produced package set
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overlays
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}:
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let
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stdenvAdapters = self: super:
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let res = import ../stdenv/adapters.nix self; in res // {
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stdenvAdapters = res;
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};
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trivialBuilders = self: super:
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import ../build-support/trivial-builders.nix {
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inherit lib; inherit (self) stdenv stdenvNoCC; inherit (self.xorg) lndir;
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};
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stdenvBootstappingAndPlatforms = self: super: {
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buildPackages = (if buildPackages == null then self else buildPackages)
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// { recurseForDerivations = false; };
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targetPackages = (if targetPackages == null then self else targetPackages)
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// { recurseForDerivations = false; };
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inherit stdenv;
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};
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# The old identifiers for cross-compiling. These should eventually be removed,
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# and the packages that rely on them refactored accordingly.
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platformCompat = self: super: let
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inherit (super.stdenv) buildPlatform hostPlatform targetPlatform;
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in {
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stdenv = super.stdenv // {
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inherit (super.stdenv.buildPlatform) platform;
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};
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inherit buildPlatform hostPlatform targetPlatform;
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inherit (buildPlatform) system platform;
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};
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splice = self: super: import ./splice.nix lib self (buildPackages != null);
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allPackages = self: super:
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let res = import ./all-packages.nix
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{ inherit lib noSysDirs config; }
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res self;
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in res;
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aliases = self: super: if config.skipAliases or false then {}
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else import ./aliases.nix lib self super;
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# stdenvOverrides is used to avoid having multiple of versions
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# of certain dependencies that were used in bootstrapping the
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# standard environment.
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stdenvOverrides = self: super:
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(super.stdenv.overrides or (_: _: {})) self super;
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# Allow packages to be overridden globally via the `packageOverrides'
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# configuration option, which must be a function that takes `pkgs'
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# as an argument and returns a set of new or overridden packages.
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# The `packageOverrides' function is called with the *original*
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# (un-overridden) set of packages, allowing packageOverrides
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# attributes to refer to the original attributes (e.g. "foo =
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# ... pkgs.foo ...").
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configOverrides = self: super:
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lib.optionalAttrs allowCustomOverrides
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((config.packageOverrides or (super: {})) super);
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# Convenience attributes for instantitating package sets. Each of
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# these will instantiate a new version of allPackages. Currently the
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# following package sets are provided:
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#
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# - pkgsCross.<system> where system is a member of lib.systems.examples
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# - pkgsMusl
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# - pkgsi686Linux
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#
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# In addition some utility functions are included for creating the
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# above sets.
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#
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# - forceLibc
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# - forceSystem
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#
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# For legacy purposes, callPackage_i686 is also included here.
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otherPackageSets = self: super: {
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# This maps each entry in lib.systems.examples to its own package
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# set. Each of these will contain all packages cross compiled for
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# that target system. For instance, pkgsCross.rasberryPi.hello,
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# will refer to the "hello" package built for the ARM6-based
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# Raspberry Pi.
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pkgsCross = lib.mapAttrs (n: crossSystem:
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nixpkgsFun { inherit crossSystem; })
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lib.systems.examples;
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# All packages built with the Musl libc. This will override the
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# default GNU libc on Linux systems. Non-Linux systems are not
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# supported.
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pkgsMusl = self.forceLibc "musl";
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# All packages built for i686 Linux.
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# Used by wine, firefox with debugging version of Flash, ...
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pkgsi686Linux = self.forceSystem "i686-linux" "i386";
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# Override default libc. Currently this is only useful on Linux
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# systems where you have the choice between Musl & Glibc. In the
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# future it may work for other things.
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forceLibc = libc: nixpkgsFun {
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localSystem = stdenv.hostPlatform // { inherit libc; };
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};
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# Override the system while preserving platform configuration.
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# system refers to the system tuple. kernelArch refers to the
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# kernel architecture used (only recognized by Linux kernels,
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# currently).
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forceSystem = system: kernelArch: nixpkgsFun {
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localSystem = {
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inherit system;
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platform = stdenv.hostPlatform.platform // { inherit kernelArch; };
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};
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};
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# Legacy attributes that are slated for removal...
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callPackage_i686 = self.pkgsi686Linux.callPackage;
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};
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# The complete chain of package set builders, applied from top to bottom.
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# stdenvOverlays must be last as it brings package forward from the
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# previous bootstrapping phases which have already been overlayed.
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toFix = lib.foldl' (lib.flip lib.extends) (self: {}) ([
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stdenvBootstappingAndPlatforms
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platformCompat
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stdenvAdapters
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trivialBuilders
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splice
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allPackages
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otherPackageSets
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aliases
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configOverrides
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] ++ overlays ++ [
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stdenvOverrides ]);
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in
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# Return the complete set of packages.
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lib.fix toFix
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