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nixpkgs/pkgs/development/haskell-modules/default.nix

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Nix

{ pkgs, stdenv, ghc, all-cabal-hashes
, compilerConfig ? (self: super: {})
, packageSetConfig ? (self: super: {})
, overrides ? (self: super: {})
}:
let
inherit (stdenv.lib) fix' extends;
haskellPackages = self:
let
mkDerivation = pkgs.callPackage ./generic-builder.nix {
inherit stdenv;
inherit (pkgs) fetchurl pkgconfig glibcLocales coreutils gnugrep gnused;
jailbreak-cabal = if (self.ghc.cross or null) != null
then self.ghc.bootPkgs.jailbreak-cabal
else self.jailbreak-cabal;
inherit (self) ghc;
hscolour = overrideCabal self.hscolour (drv: {
isLibrary = false;
doHaddock = false;
hyperlinkSource = false; # Avoid depending on hscolour for this build.
postFixup = "rm -rf $out/lib $out/share $out/nix-support";
});
cpphs = overrideCabal (self.cpphs.overrideScope (self: super: {
mkDerivation = drv: super.mkDerivation (drv // {
enableSharedExecutables = false;
enableSharedLibraries = false;
doHaddock = false;
useCpphs = false;
});
})) (drv: {
isLibrary = false;
postFixup = "rm -rf $out/lib $out/share $out/nix-support";
});
};
overrideCabal = drv: f: drv.override (args: args // {
mkDerivation = drv: args.mkDerivation (drv // f drv);
});
callPackageWithScope = scope: drv: args: (stdenv.lib.callPackageWith scope drv args) // {
overrideScope = f: callPackageWithScope (mkScope (fix' (extends f scope.__unfix__))) drv args;
};
mkScope = scope: pkgs // pkgs.xorg // pkgs.gnome2 // scope;
defaultScope = mkScope self;
callPackage = drv: args: callPackageWithScope defaultScope drv args;
withPackages = packages: callPackage ./with-packages-wrapper.nix {
inherit (self) llvmPackages;
haskellPackages = self;
inherit packages;
};
hackage2nix = name: version: pkgs.stdenv.mkDerivation {
name = "cabal2nix-${name}-${version}";
buildInputs = [ pkgs.cabal2nix ];
phases = ["installPhase"];
LANG = "en_US.UTF-8";
LOCALE_ARCHIVE = pkgs.lib.optionalString pkgs.stdenv.isLinux "${pkgs.glibcLocales}/lib/locale/locale-archive";
installPhase = ''
export HOME="$TMP"
mkdir $out
hash=$(sed -e 's/.*"SHA256":"//' -e 's/".*$//' ${all-cabal-hashes}/${name}/${version}/${name}.json)
cabal2nix --compiler=${self.ghc.name} --system=${stdenv.system} --sha256=$hash ${all-cabal-hashes}/${name}/${version}/${name}.cabal >$out/default.nix
'';
};
in
import ./hackage-packages.nix { inherit pkgs stdenv callPackage; } self // {
inherit mkDerivation callPackage;
callHackage = name: version: self.callPackage (hackage2nix name version);
ghcWithPackages = selectFrom: withPackages (selectFrom self);
ghcWithHoogle = selectFrom:
let
packages = selectFrom self;
hoogle = callPackage ./hoogle.nix {
inherit packages;
};
in withPackages (packages ++ [ hoogle ]);
ghc = ghc // {
withPackages = self.ghcWithPackages;
withHoogle = self.ghcWithHoogle;
};
};
commonConfiguration = import ./configuration-common.nix { inherit pkgs; };
in
fix'
(extends overrides
(extends packageSetConfig
(extends compilerConfig
(extends commonConfiguration haskellPackages))))