93 lines
3.5 KiB
Nix
93 lines
3.5 KiB
Nix
|
# generic builder for Cabal packages
|
||
|
|
|
||
|
|
attrs :
|
||
|
|
{
|
||
|
|
mkDerivation =
|
||
|
|
transform :
|
||
|
|
let dtransform =
|
||
|
|
self : {
|
||
|
|
|
||
|
|
# pname should be defined by the client to be the package basename
|
||
|
|
# version should be defined by the client to be the package version
|
||
|
|
|
||
|
|
# fname is the internal full name of the package
|
||
|
|
fname = "${self.pname}-${self.version}";
|
||
|
|
|
||
|
|
# name is the external full name of the package; usually we prefix
|
||
|
|
# all packages with haskell- to avoid name clashes for libraries;
|
||
|
|
# if that is not desired (for applications), name can be set to
|
||
|
|
# fname.
|
||
|
|
name = "haskell-${self.fname}";
|
||
|
|
|
||
|
|
# the default download location for Cabal packages is Hackage,
|
||
|
|
# you still have to specify the checksum
|
||
|
|
src = attrs.fetchurl {
|
||
|
|
url = "http://hackage.haskell.org/packages/archive/${self.pname}/${self.version}/${self.fname}.tar.gz";
|
||
|
|
inherit (self) sha256;
|
||
|
|
};
|
||
|
|
|
||
|
|
# default buildInputs are just ghc, if more buildInputs are required
|
||
|
|
# buildInputs can be extended by the client, but often propagatedBuildInputs
|
||
|
|
# is preferable anyway
|
||
|
|
buildInputs = [attrs.ghc];
|
||
|
|
|
||
|
|
# we make sure that propagatedBuildInputs is defined, so that we don't
|
||
|
|
# have to check for its existence
|
||
|
|
propagatedBuildInputs = [];
|
||
|
|
|
||
|
|
# library directories that have to be added to the Cabal files
|
||
|
|
extraLibDirs = map (x : x + "/lib") self.propagatedBuildInputs;
|
||
|
|
|
||
|
|
# file(s) that have to be patched with information about extra libraries;
|
||
|
|
# can be redefined to the empty list by the client if this is not desired
|
||
|
|
patchLibFiles = [ "${self.pname}.cabal" ];
|
||
|
|
|
||
|
|
# patches files, compiles Setup, and configures
|
||
|
|
configurePhase = ''
|
||
|
|
eval "$preConfigure"
|
||
|
|
|
||
|
|
for i in ${toString self.patchLibFiles}; do
|
||
|
|
echo "patching $i"
|
||
|
|
test -f $i && sed -i '/extra-libraries/ { s|\( *\)extra-libraries.*|&\n\1extra-lib-dirs: ${toString self.extraLibDirs}| }' $i
|
||
|
|
done
|
||
|
|
for i in Setup.hs Setup.lhs; do
|
||
|
|
test -f $i && ghc --make $i
|
||
|
|
done
|
||
|
|
./Setup configure --prefix="$out"
|
||
|
|
|
||
|
|
eval "$postConfigure"
|
||
|
|
'';
|
||
|
|
|
||
|
|
# builds via Cabal
|
||
|
|
buildPhase = ''
|
||
|
|
eval "$preBuild"
|
||
|
|
|
||
|
|
./Setup build
|
||
|
|
|
||
|
|
eval "$postBuild"
|
||
|
|
'';
|
||
|
|
|
||
|
|
# installs via Cabal; creates a registration file for nix-support
|
||
|
|
# so that the package can be used in other Haskell-builds; also
|
||
|
|
# creates a register-${name}.sh in userspace that can be used to
|
||
|
|
# register the library in a user environment (but this scheme
|
||
|
|
# should sooner or later be deprecated in favour of using a
|
||
|
|
# ghc-wrapper).
|
||
|
|
installPhase = ''
|
||
|
|
eval "$preInstall"
|
||
|
|
|
||
|
|
./Setup copy
|
||
|
|
./Setup register --gen-script
|
||
|
|
mkdir $out/nix-support
|
||
|
|
sed -i 's/|.*\(ghc-pkg update\)/| \1/' register.sh
|
||
|
|
cp register.sh $out/nix-support/register-ghclib.sh
|
||
|
|
sed -i 's/\(ghc-pkg update\)/\1 --user/' register.sh
|
||
|
|
mkdir $out/bin
|
||
|
|
cp register.sh $out/bin/register-${self.name}.sh
|
||
|
|
|
||
|
|
eval "$postInstall"
|
||
|
|
'';
|
||
|
|
};
|
||
|
|
in attrs.stdenv.mkDerivation ((rec { f = dtransform f // transform f; }).f);
|
||
|
|
}
|