42 lines
1.4 KiB
Nix
42 lines
1.4 KiB
Nix
{ stdenv, ghc, packages, buildEnv, makeWrapper }:
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assert packages != [];
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let
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ghc761OrLater = stdenv.lib.versionOlder "7.6.1" ghc.version;
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packageDBFlag = if ghc761OrLater then "--package-db" else "--package-conf";
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libDir = "$out/lib/ghc-${ghc.version}";
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packageCfgDir = "${libDir}/package.conf.d";
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in
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buildEnv {
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name = "haskell-env-${ghc.name}";
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paths = stdenv.lib.filter (x: x ? ghc) (stdenv.lib.closePropagation packages) ++ [ghc];
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postBuild = ''
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. ${makeWrapper}/nix-support/setup-hook
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for prg in ghc ghci ghc-${ghc.version} ghci-${ghc.version}; do
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rm -f $out/bin/$prg
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makeWrapper ${ghc}/bin/$prg $out/bin/$prg \
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--add-flags '"-B$NIX_GHC_LIBDIR"' \
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--set "NIX_GHC" "$out/bin/ghc" \
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--set "NIX_GHCPKG" "$out/bin/ghc-pkg" \
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--set "NIX_GHC_LIBDIR" "${libDir}"
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done
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for prg in runghc runhaskell; do
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rm -f $out/bin/$prg
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makeWrapper ${ghc}/bin/$prg $out/bin/$prg \
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--add-flags "-f $out/bin/ghc" \
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--set "NIX_GHC" "$out/bin/ghc" \
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--set "NIX_GHCPKG" "$out/bin/ghc-pkg" \
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--set "NIX_GHC_LIBDIR" "${libDir}"
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done
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for prg in ghc-pkg ghc-pkg-${ghc.version}; do
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rm -f $out/bin/$prg
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makeWrapper ${ghc}/bin/$prg $out/bin/$prg --add-flags "${packageDBFlag} ${packageCfgDir}"
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done
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$out/bin/ghc-pkg recache
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'';
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}
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