{ stdenv, ghc, makeWrapper, coreutils, writeScript }: let ghcjs = ghc; packageDBFlag = "-package-db"; GHCGetPackages = writeScript "ghc-get-packages.sh" '' #! ${stdenv.shell} # Usage: # $1: version of GHC # $2: invocation path of GHC # $3: prefix version="$1" if test -z "$3"; then prefix="${packageDBFlag} " else prefix="$3" fi PATH="$PATH:$2" IFS=":" for p in $PATH; do for i in "$p/../share/ghcjs/$system-${ghcjs.version}-${ghcjs.ghc.version}"{,/lib,/ghcjs}"/package.conf.d" "$p/../lib/ghcjs-${ghc.version}_ghc-${ghc.ghc.version}/package.conf.d" ; do # output takes place here test -f $i/package.cache && echo -n " $prefix$i" done done ''; GHCPackages = writeScript "ghc-packages.sh" '' #! ${stdenv.shell} -e declare -A GHC_PACKAGES_HASH # using bash4 hashs to get uniq paths for arg in $(${GHCGetPackages} ${ghcjs.version} "$(dirname $0)"); do # Why is ghc.version passed in from here instead of captured in the other script directly? case "$arg" in ${packageDBFlag}) ;; *) CANONICALIZED="$(${coreutils}/bin/readlink -f -- "$arg")" GHC_PACKAGES_HASH["$CANONICALIZED"]= ;; esac done for path in ''${!GHC_PACKAGES_HASH[@]}; do echo -n "$path:" done ''; in stdenv.mkDerivation { name = "ghcjs-ghc${ghcjs.ghc.version}-${ghcjs.version}-wrapper"; buildInputs = [makeWrapper]; propagatedBuildInputs = [ghcjs]; unpackPhase = "true"; installPhase = '' runHook preInstall mkdir -p $out/bin for prg in ghcjs ; do makeWrapper $ghc/bin/$prg $out/bin/$prg --add-flags "\$(${GHCGetPackages} ${ghcjs.version} \"\$(dirname \$0)\")" done for prg in ghcjs-pkg ; do makeWrapper $ghc/bin/$prg $out/bin/$prg --add-flags "\$(${GHCGetPackages} ${ghcjs.version} \"\$(dirname \$0)\" -${packageDBFlag}=)" done mkdir -p $out/nix-support ln -s $out/nix-support/propagated-build-inputs $out/nix-support/propagated-user-env-packages mkdir -p $out/share/doc ln -s $ghc/lib $out/lib ln -s $ghc/share/doc/ghc $out/share/doc/ghc-${ghcjs.version} runHook postInstall ''; ghc = ghcjs; inherit GHCGetPackages GHCPackages; inherit (ghcjs) meta version; }