263 lines
9.8 KiB
Nix
263 lines
9.8 KiB
Nix
# This expression takes a file like `hackage-packages.nix` and constructs
|
|
# a full package set out of that.
|
|
|
|
{ # package-set used for build tools (all of nixpkgs)
|
|
buildPackages
|
|
|
|
, # A haskell package set for Setup.hs, compiler plugins, and similar
|
|
# build-time uses.
|
|
buildHaskellPackages
|
|
|
|
, # package-set used for non-haskell dependencies (all of nixpkgs)
|
|
pkgs
|
|
|
|
, # stdenv to use for building haskell packages
|
|
stdenv
|
|
|
|
, haskellLib
|
|
|
|
, # hashes for downloading Hackage packages
|
|
all-cabal-hashes
|
|
|
|
, # compiler to use
|
|
ghc
|
|
|
|
, # A function that takes `{ pkgs, stdenv, callPackage }` as the first arg and
|
|
# `self` as second, and returns a set of haskell packages
|
|
package-set
|
|
|
|
, # The final, fully overriden package set usable with the nixpkgs fixpoint
|
|
# overriding functionality
|
|
extensible-self
|
|
}:
|
|
|
|
# return value: a function from self to the package set
|
|
self:
|
|
|
|
let
|
|
inherit (stdenv) buildPlatform hostPlatform;
|
|
|
|
inherit (stdenv.lib) fix' extends makeOverridable;
|
|
inherit (haskellLib) overrideCabal getHaskellBuildInputs;
|
|
|
|
mkDerivationImpl = pkgs.callPackage ./generic-builder.nix {
|
|
inherit stdenv;
|
|
nodejs = buildPackages.nodejs-slim;
|
|
inherit buildHaskellPackages;
|
|
inherit (self) ghc;
|
|
inherit (buildHaskellPackages) jailbreak-cabal;
|
|
hscolour = overrideCabal buildHaskellPackages.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";
|
|
});
|
|
};
|
|
|
|
mkDerivation = makeOverridable mkDerivationImpl;
|
|
|
|
# manualArgs are the arguments that were explictly passed to `callPackage`, like:
|
|
#
|
|
# callPackage foo { bar = null; };
|
|
#
|
|
# here `bar` is a manual argument.
|
|
callPackageWithScope = scope: fn: manualArgs:
|
|
let
|
|
# this code is copied from callPackage in lib/customisation.nix
|
|
#
|
|
# we cannot use `callPackage` here because we want to call `makeOverridable`
|
|
# on `drvScope` (we cannot add `overrideScope` after calling `callPackage` because then it is
|
|
# lost on `.override`) but determine the auto-args based on `drv` (the problem here
|
|
# is that nix has no way to "passthrough" args while preserving the reflection
|
|
# info that callPackage uses to determine the arguments).
|
|
drv = if stdenv.lib.isFunction fn then fn else import fn;
|
|
auto = builtins.intersectAttrs (stdenv.lib.functionArgs drv) scope;
|
|
|
|
# this wraps the `drv` function to add a `overrideScope` function to the result.
|
|
drvScope = allArgs: drv allArgs // {
|
|
overrideScope = f:
|
|
let newScope = mkScope (fix' (extends f scope.__unfix__));
|
|
# note that we have to be careful here: `allArgs` includes the auto-arguments that
|
|
# weren't manually specified. If we would just pass `allArgs` to the recursive call here,
|
|
# then we wouldn't look up any packages in the scope in the next interation, because it
|
|
# appears as if all arguments were already manually passed, so the scope change would do
|
|
# nothing.
|
|
in callPackageWithScope newScope drv manualArgs;
|
|
};
|
|
in stdenv.lib.makeOverridable drvScope (auto // manualArgs);
|
|
|
|
mkScope = scope: pkgs // pkgs.xorg // pkgs.gnome2 // { inherit stdenv; } // scope;
|
|
defaultScope = mkScope self;
|
|
callPackage = drv: args: callPackageWithScope defaultScope drv args;
|
|
|
|
withPackages = packages: buildPackages.callPackage ./with-packages-wrapper.nix {
|
|
inherit (self) llvmPackages;
|
|
inherit ghc;
|
|
inherit packages;
|
|
};
|
|
|
|
haskellSrc2nix = { name, src, sha256 ? null, extraCabal2nixOptions ? "" }:
|
|
let
|
|
sha256Arg = if isNull sha256 then "--sha256=" else ''--sha256="${sha256}"'';
|
|
in pkgs.buildPackages.stdenv.mkDerivation {
|
|
name = "cabal2nix-${name}";
|
|
nativeBuildInputs = [ pkgs.buildPackages.cabal2nix ];
|
|
preferLocalBuild = true;
|
|
phases = ["installPhase"];
|
|
LANG = "en_US.UTF-8";
|
|
LOCALE_ARCHIVE = pkgs.lib.optionalString buildPlatform.isLinux "${buildPackages.glibcLocales}/lib/locale/locale-archive";
|
|
installPhase = ''
|
|
export HOME="$TMP"
|
|
mkdir -p "$out"
|
|
cabal2nix --compiler=${ghc.haskellCompilerName} --system=${hostPlatform.system} ${sha256Arg} "${src}" ${extraCabal2nixOptions} > "$out/default.nix"
|
|
'';
|
|
};
|
|
|
|
all-cabal-hashes-component = name: version: pkgs.runCommand "all-cabal-hashes-component-${name}-${version}" {} ''
|
|
tar --wildcards -xzvf ${all-cabal-hashes} \*/${name}/${version}/${name}.{json,cabal}
|
|
mkdir -p $out
|
|
mv */${name}/${version}/${name}.{json,cabal} $out
|
|
'';
|
|
|
|
hackage2nix = name: version: let component = all-cabal-hashes-component name version; in self.haskellSrc2nix {
|
|
name = "${name}-${version}";
|
|
sha256 = ''$(sed -e 's/.*"SHA256":"//' -e 's/".*$//' "${component}/${name}.json")'';
|
|
src = "${component}/${name}.cabal";
|
|
};
|
|
|
|
# Adds a nix file as an input to the haskell derivation it
|
|
# produces. This is useful for callHackage / callCabal2nix to
|
|
# prevent the generated default.nix from being garbage collected
|
|
# (requiring it to be frequently rebuilt), which can be an
|
|
# annoyance.
|
|
callPackageKeepDeriver = src: args:
|
|
overrideCabal (self.callPackage src args) (orig: {
|
|
preConfigure = ''
|
|
# Generated from ${src}
|
|
${orig.preConfigure or ""}
|
|
'';
|
|
});
|
|
|
|
in package-set { inherit pkgs stdenv callPackage; } self // {
|
|
|
|
inherit mkDerivation callPackage haskellSrc2nix hackage2nix;
|
|
|
|
inherit (haskellLib) packageSourceOverrides;
|
|
|
|
callHackage = name: version: callPackageKeepDeriver (self.hackage2nix name version);
|
|
|
|
# Creates a Haskell package from a source package by calling cabal2nix on the source.
|
|
callCabal2nix = name: src: args: let
|
|
filter = path: type:
|
|
pkgs.lib.hasSuffix "${name}.cabal" path ||
|
|
baseNameOf path == "package.yaml";
|
|
expr = haskellSrc2nix {
|
|
inherit name;
|
|
src = if pkgs.lib.canCleanSource src
|
|
then pkgs.lib.cleanSourceWith { inherit src filter; }
|
|
else src;
|
|
};
|
|
in overrideCabal (callPackageKeepDeriver expr args) (orig: {
|
|
inherit src;
|
|
});
|
|
|
|
# : { root : Path
|
|
# , source-overrides : Defaulted (Either Path VersionNumber)
|
|
# , overrides : Defaulted (HaskellPackageOverrideSet)
|
|
# , modifier : Defaulted
|
|
# , returnShellEnv : Defaulted
|
|
# } -> NixShellAwareDerivation
|
|
# Given a path to a haskell package directory whose cabal file is
|
|
# named the same as the directory name, an optional set of
|
|
# source overrides as appropriate for the 'packageSourceOverrides'
|
|
# function, an optional set of arbitrary overrides, and an optional
|
|
# haskell package modifier, return a derivation appropriate
|
|
# for nix-build or nix-shell to build that package.
|
|
developPackage =
|
|
{ root
|
|
, source-overrides ? {}
|
|
, overrides ? self: super: {}
|
|
, modifier ? drv: drv
|
|
, returnShellEnv ? pkgs.lib.inNixShell }:
|
|
let drv =
|
|
(extensible-self.extend
|
|
(pkgs.lib.composeExtensions
|
|
(self.packageSourceOverrides source-overrides)
|
|
overrides))
|
|
.callCabal2nix (builtins.baseNameOf root) root {};
|
|
in if returnShellEnv then (modifier drv).env else modifier drv;
|
|
|
|
ghcWithPackages = selectFrom: withPackages (selectFrom self);
|
|
|
|
ghcWithHoogle = selectFrom:
|
|
let
|
|
packages = selectFrom self;
|
|
hoogle = callPackage ./hoogle.nix {
|
|
inherit packages;
|
|
};
|
|
in withPackages (packages ++ [ hoogle ]);
|
|
|
|
# Returns a derivation whose environment contains a GHC with only
|
|
# the dependencies of packages listed in `packages`, not the
|
|
# packages themselves. Using nix-shell on this derivation will
|
|
# give you an environment suitable for developing the listed
|
|
# packages with an incremental tool like cabal-install.
|
|
#
|
|
# # default.nix
|
|
# with import <nixpkgs> {};
|
|
# haskellPackages.extend (haskell.lib.packageSourceOverrides {
|
|
# frontend = ./frontend;
|
|
# backend = ./backend;
|
|
# common = ./common;
|
|
# })
|
|
#
|
|
# # shell.nix
|
|
# (import ./.).shellFor {
|
|
# packages = p: [p.frontend p.backend p.common];
|
|
# withHoogle = true;
|
|
# }
|
|
#
|
|
# -- cabal.project
|
|
# packages:
|
|
# frontend/
|
|
# backend/
|
|
# common/
|
|
#
|
|
# bash$ nix-shell --run "cabal new-build all"
|
|
shellFor = { packages, withHoogle ? false, ... } @ args:
|
|
let
|
|
selected = packages self;
|
|
packageInputs = builtins.map getHaskellBuildInputs selected;
|
|
haskellInputs =
|
|
builtins.filter
|
|
(input: pkgs.lib.all (p: input.outPath != p.outPath) selected)
|
|
(pkgs.lib.concatMap (p: p.haskellBuildInputs) packageInputs);
|
|
systemInputs = pkgs.lib.concatMap (p: p.systemBuildInputs) packageInputs;
|
|
withPackages = if withHoogle then self.ghcWithHoogle else self.ghcWithPackages;
|
|
mkDrvArgs = builtins.removeAttrs args ["packages" "withHoogle"];
|
|
in pkgs.stdenv.mkDerivation (mkDrvArgs // {
|
|
name = "ghc-shell-for-packages";
|
|
nativeBuildInputs = [(withPackages (_: haskellInputs))] ++ mkDrvArgs.nativeBuildInputs or [];
|
|
buildInputs = systemInputs ++ mkDrvArgs.buildInputs or [];
|
|
phases = ["installPhase"];
|
|
installPhase = "echo $nativeBuildInputs $buildInputs > $out";
|
|
});
|
|
|
|
ghc = ghc // {
|
|
withPackages = self.ghcWithPackages;
|
|
withHoogle = self.ghcWithHoogle;
|
|
};
|
|
|
|
}
|