nixpkgs/pkgs/development/compilers/ghc/with-packages.nix
Peter Simons d09269a22e Use the same directory layout for user-installed Haskell libraries that GHC
uses for its core libraries, so that these files integrate seamlessly into one
profile, living right next to each other. This change is eventually going to
simply our with-packages wrapper quite a bit.
2013-03-15 20:38:15 +01:00

123 lines
3.5 KiB
Nix

{stdenv, ghc, packages ? [], makeWrapper}:
stdenv.mkDerivation rec {
name = "haskell-env-${ghc.name}";
allPackages = stdenv.lib.closePropagation packages;
buildInputs = allPackages ++ [makeWrapper];
propagatedBuildInputs = packages;
unpackPhase = "true";
installPhase = ''
numversion=$(${ghc}/bin/ghc --numeric-version)
majorversion=''${numversion%%.*}
minorversion=''${numversion#*.}
minorversion=''${minorversion%%.*}
if [[ $majorversion -gt 6 ]] && [[ $minorversion -gt 4 ]]; then
globalConf="--global-package-db"
else
globalConf="--global-conf"
fi
originalTopDir="${ghc}/lib/ghc-${ghc.version}"
originalPkgDir="$originalTopDir/package.conf.d"
linkedTopDir="$out/lib"
linkedPkgDir="$linkedTopDir/package.conf.d"
mkdir -p $out/bin
mkdir -p $linkedTopDir
mkdir -p $linkedPkgDir
echo "Linking GHC core libraries:"
echo -n "Linking $originalTopDir "
for f in "$originalTopDir/"*; do
if test -f $f; then
ln -s $f $linkedTopDir
echo -n .
fi
done
echo
echo -n "Linking $originalPkgDir "
for f in "$originalPkgDir/"*.conf; do
ln -s $f $linkedPkgDir
echo -n .
done
echo
echo "Linking selected packages and dependencies:"
for currentPath in ${stdenv.lib.concatStringsSep " " allPackages}; do
currentPkgDir="$currentPath/lib/ghc-${ghc.version}/package.conf.d/"
# Check if current path is a Cabal package for the current GHC
if test -d $currentPkgDir; then
echo -n "Linking $currentPath "
for f in "$currentPath/bin/"*; do
ln -s $f $out/bin
echo -n .
done
for f in "$currentPath/etc/bash_completion.d/"*; do
mkdir -p $out/etc/bash_completion.d
ln -s $f $out/etc/bash_completion.d/
echo -n .
done
for s in 1 2 3 4 5 6 7 8 9; do
for f in "$currentPath/share/man/man$s/"*; do
mkdir -p $out/share/man/man$s
ln -sv $f $out/share/man/man$s/
echo -n .
done
done
for f in "$currentPath/share/emacs/site-lisp/"*; do
mkdir -p $out/share/emacs/site-lisp
ln -s $f $out/share/emacs/site-lisp/
echo -n .
done
for f in "$currentPkgDir/"*.conf; do
ln -s $f $linkedPkgDir
echo -n .
done
echo
fi
done
echo -n "Generating package cache "
${ghc}/bin/ghc-pkg $globalConf $linkedPkgDir recache
echo .
echo -n "Generating wrappers "
for prg in ghc ghci ghc-${ghc.version} ghci-${ghc.version}; do
# The NIX env-vars are picked up by our patched version of ghc-paths.
makeWrapper ${ghc}/bin/$prg $out/bin/$prg \
--add-flags "-B$linkedTopDir" \
--set "NIX_GHC" "$out/bin/ghc" \
--set "NIX_GHCPKG" "$out/bin/ghc-pkg" \
--set "NIX_GHC_LIBDIR" "$linkedTopDir"
echo -n .
done
for prg in runghc runhaskell; do
makeWrapper ${ghc}/bin/$prg $out/bin/$prg --add-flags "-f $out/bin/ghc"
echo -n .
done
for prg in ghc-pkg ghc-pkg-${ghc.version}; do
makeWrapper ${ghc}/bin/$prg $out/bin/$prg --add-flags "$globalConf $linkedPkgDir"
echo -n .
done
for prg in hp2ps hpc hasktags hsc2hs haddock haddock-${ghc.version}; do
if test -x ${ghc}/bin/$prg -a ! -x $out/bin/$prg; then
ln -s ${ghc}/bin/$prg $out/bin/$prg && echo -n .
fi
done
echo
'';
meta = ghc.meta;
}