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haskell-packages: factor package set construction in new file
Closes #24850.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| # This expression takes a file like `hackage-packages.nix` and constructs | ||
| # a full package set out of that. | ||
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| # required dependencies: | ||
| { pkgs, stdenv, all-cabal-hashes }: | ||
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| # arguments: | ||
| # * ghc package to use | ||
| # * package-set: a function that takes { pkgs, stdenv, callPackage } as first arg and `self` as second | ||
| { ghc, package-set }: | ||
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| # return value: a function from self to the package set | ||
| self: let | ||
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| inherit (stdenv.lib) fix' extends makeOverridable; | ||
| inherit (import ./lib.nix { inherit pkgs; }) overrideCabal; | ||
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| mkDerivationImpl = pkgs.callPackage ./generic-builder.nix { | ||
| inherit stdenv; | ||
| inherit (pkgs) fetchurl pkgconfig glibcLocales coreutils gnugrep gnused; | ||
| nodejs = pkgs.nodejs-slim; | ||
| 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 $out/nix-support"; | ||
| }); | ||
| }; | ||
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| mkDerivation = makeOverridable mkDerivationImpl; | ||
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| callPackageWithScope = scope: drv: args: (stdenv.lib.callPackageWith scope drv args) // { | ||
| overrideScope = f: callPackageWithScope (mkScope (fix' (extends f scope.__unfix__))) drv args; | ||
| }; | ||
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| mkScope = scope: pkgs // pkgs.xorg // pkgs.gnome2 // scope; | ||
| defaultScope = mkScope self; | ||
| callPackage = drv: args: callPackageWithScope defaultScope drv args; | ||
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| withPackages = packages: callPackage ./with-packages-wrapper.nix { | ||
| inherit (self) llvmPackages; | ||
| haskellPackages = self; | ||
| inherit packages; | ||
| }; | ||
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| haskellSrc2nix = { name, src, sha256 ? null }: | ||
| let | ||
| sha256Arg = if isNull sha256 then "--sha256=" else ''--sha256="${sha256}"''; | ||
| in pkgs.stdenv.mkDerivation { | ||
| name = "cabal2nix-${name}"; | ||
| buildInputs = [ pkgs.cabal2nix ]; | ||
| phases = ["installPhase"]; | ||
| LANG = "en_US.UTF-8"; | ||
| LOCALE_ARCHIVE = pkgs.lib.optionalString pkgs.stdenv.isLinux "${pkgs.glibcLocales}/lib/locale/locale-archive"; | ||
| installPhase = '' | ||
| export HOME="$TMP" | ||
| mkdir -p "$out" | ||
| cabal2nix --compiler=${self.ghc.name} --system=${stdenv.system} ${sha256Arg} "${src}" > "$out/default.nix" | ||
| ''; | ||
| }; | ||
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| hackage2nix = name: version: haskellSrc2nix { | ||
| name = "${name}-${version}"; | ||
| sha256 = ''$(sed -e 's/.*"SHA256":"//' -e 's/".*$//' "${all-cabal-hashes}/${name}/${version}/${name}.json")''; | ||
| src = "${all-cabal-hashes}/${name}/${version}/${name}.cabal"; | ||
| }; | ||
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| in package-set { inherit pkgs stdenv callPackage; } self // { | ||
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| inherit mkDerivation callPackage haskellSrc2nix hackage2nix; | ||
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| callHackage = name: version: self.callPackage (self.hackage2nix name version); | ||
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| # Creates a Haskell package from a source package by calling cabal2nix on the source. | ||
| callCabal2nix = name: src: self.callPackage (self.haskellSrc2nix { inherit src name; }); | ||
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| ghcWithPackages = selectFrom: withPackages (selectFrom self); | ||
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| ghcWithHoogle = selectFrom: | ||
| let | ||
| packages = selectFrom self; | ||
| hoogle = callPackage ./hoogle.nix { | ||
| inherit packages; | ||
| }; | ||
| in withPackages (packages ++ [ hoogle ]); | ||
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| ghc = ghc // { | ||
| withPackages = self.ghcWithPackages; | ||
| withHoogle = self.ghcWithHoogle; | ||
| }; | ||
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| } |