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58 lines
2.1 KiB
Nix
58 lines
2.1 KiB
Nix
{ stdenv, ghc, makeWrapper, coreutils }:
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let
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ghc761OrLater = !stdenv.lib.versionOlder ghc.version "7.6.1";
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packageDBFlag = if ghc761OrLater then "-package-db" else "-package-conf";
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in
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stdenv.mkDerivation ({
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name = "ghc-${ghc.version}-wrapper";
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buildInputs = [makeWrapper];
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propagatedBuildInputs = [ghc];
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unpackPhase = "true";
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installPhase = ''
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mkdir -p $out/bin
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cp $GHCGetPackages $out/bin/ghc-get-packages.sh
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chmod 755 $out/bin/ghc-get-packages.sh
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for prg in ghc ghci ghc-${ghc.version} ghci-${ghc.version}; do
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makeWrapper $ghc/bin/$prg $out/bin/$prg --add-flags "\$($out/bin/ghc-get-packages.sh ${ghc.version} \"\$(dirname \$0)\")"
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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 "\$($out/bin/ghc-get-packages.sh ${ghc.version} \"\$(dirname \$0)\" \" ${packageDBFlag} --ghc-arg=\")"
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done
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for prg in ghc-pkg ghc-pkg-${ghc.version}; do
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makeWrapper $ghc/bin/$prg $out/bin/$prg --add-flags "\$($out/bin/ghc-get-packages.sh ${ghc.version} \"\$(dirname \$0)\" -${packageDBFlag}=)"
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done
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for prg in hp2ps hpc hasktags hsc2hs; do
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test -x $ghc/bin/$prg && ln -s $ghc/bin/$prg $out/bin/$prg
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done
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cat >> $out/bin/ghc-packages << EOF
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#! /bin/bash -e
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declare -A GHC_PACKAGES_HASH # using bash4 hashs to get uniq paths
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for arg in \$($out/bin/ghc-get-packages.sh ${ghc.version} \"\$(dirname \$0)\"); do
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case "\$arg" in
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${packageDBFlag}) ;;
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*)
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CANONICALIZED="\$(${stdenv.lib.optionalString stdenv.isDarwin "${coreutils}/bin/"}readlink -f "\$arg")"
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GHC_PACKAGES_HASH["\$CANONICALIZED"]= ;;
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esac
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done
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for path in \''${!GHC_PACKAGES_HASH[@]}; do
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echo -n "\$path:"
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done
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EOF
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chmod +x $out/bin/ghc-packages
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mkdir -p $out/nix-support
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ln -s $out/nix-support/propagated-build-inputs $out/nix-support/propagated-user-env-packages
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'';
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GHCGetPackages = ./ghc-get-packages.sh;
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inherit ghc;
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inherit (ghc) meta;
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ghcVersion = ghc.version;
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} // (stdenv.lib.optionalAttrs ghc761OrLater { preFixup = "sed -i -e 's|-package-conf|${packageDBFlag}|' $out/bin/ghc-get-packages.sh"; }))
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