105 lines
2.8 KiB
Nix
105 lines
2.8 KiB
Nix
{stdenv, ghc, packages ? [], makeWrapper}:
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stdenv.mkDerivation rec {
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name = "haskell-env-${ghc.name}";
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allPackages = stdenv.lib.closePropagation packages;
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buildInputs = allPackages ++ [makeWrapper];
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propagatedBuildInputs = packages;
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unpackPhase = "true";
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installPhase = ''
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numversion=$(${ghc}/bin/ghc --numeric-version)
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majorversion=''${numversion%%.*}
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minorversion=''${numversion#*.}
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minorversion=''${minorversion%%.*}
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if [[ $majorversion -gt 6 ]] && [[ $minorversion -gt 4 ]]; then
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globalConf="--global-package-db"
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else
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globalConf="--global-conf"
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fi
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originalTopDir="${ghc}/lib/ghc-${ghc.version}"
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originalPkgDir="$originalTopDir/package.conf.d"
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linkedTopDir="$out/lib"
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linkedPkgDir="$linkedTopDir/package.conf.d"
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mkdir -p $out/bin
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mkdir -p $linkedTopDir
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mkdir -p $linkedPkgDir
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echo "Linking GHC core libraries:"
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echo -n "Linking $originalTopDir "
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for f in "$originalTopDir/"*; do
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if test -f $f; then
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ln -s $f $linkedTopDir
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echo -n .
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fi
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done
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echo
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echo -n "Linking $originalPkgDir "
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for f in "$originalPkgDir/"*.conf; do
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ln -s $f $linkedPkgDir
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echo -n .
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done
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echo
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echo "Linking selected packages and dependencies:"
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for currentPath in ${stdenv.lib.concatStringsSep " " allPackages}; do
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currentPkgDir="$currentPath/lib/ghc-pkgs/ghc-${ghc.version}"
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# Check if current path is a Cabal package for the current GHC
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if test -d $currentPkgDir; then
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echo -n "Linking $currentPath "
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for f in "$currentPath/bin/"*; do
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ln -s $f $out/bin
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echo -n .
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done
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for f in "$currentPath/etc/bash_completion.d/"*; do
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mkdir -p $out/etc/bash_completion.d
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ln -s $f $out/etc/bash_completion.d/
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echo -n .
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done
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for f in "$currentPkgDir/"*.conf; do
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ln -s $f $linkedPkgDir
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echo -n .
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done
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echo
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fi
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done
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echo -n "Generating package cache "
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${ghc}/bin/ghc-pkg $globalConf $linkedPkgDir recache
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echo .
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echo -n "Generating wrappers "
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for prg in ghc ghci ghc-${ghc.version} ghci-${ghc.version}; do
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makeWrapper ${ghc}/bin/$prg $out/bin/$prg --add-flags "-B$linkedTopDir"
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echo -n .
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done
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for prg in runghc runhaskell; do
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makeWrapper ${ghc}/bin/$prg $out/bin/$prg --add-flags "-f $out/bin/ghc"
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echo -n .
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done
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for prg in ghc-pkg ghc-pkg-${ghc.version}; do
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makeWrapper ${ghc}/bin/$prg $out/bin/$prg --add-flags "$globalConf $linkedPkgDir"
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echo -n .
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done
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for prg in hp2ps hpc hasktags hsc2hs haddock haddock-${ghc.version}; do
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if test -x ${ghc}/bin/$prg -a ! -x $out/bin/$prg; then
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ln -s ${ghc}/bin/$prg $out/bin/$prg && echo -n .
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fi
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done
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echo
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'';
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meta = ghc.meta;
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}
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