Drop obsolete pkgs/development/compilers/ghc/wrapper.nix.

Resolves https://github.com/NixOS/nixpkgs/issues/6575.

pkgs/development/compilers/ghc/wrapper.nix

@@ -1,86 +0,0 @@
-{ stdenv, ghc, makeWrapper, coreutils, writeScript }:
-
-let
-  ghc761OrLater = !stdenv.lib.versionOlder ghc.version "7.6.1";
-  packageDBFlag = if ghc761OrLater then "-package-db" else "-package-conf";
-
-  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="$2:$PATH"
-    IFS=":"
-    for p in $PATH; do
-      PkgDir="$p/../lib/ghc-$version/package.conf.d"
-      for i in "$PkgDir/"*.installedconf; do
-        # output takes place here
-        test -f $i && echo -n " $prefix$i"
-      done
-    done
-    test -f "$2/../lib/ghc-$version/package.conf" && echo -n " $prefix$2/../lib/ghc-$version/package.conf"
-  '';
-
-  GHCPackages = writeScript "ghc-packages.sh" ''
-    #! ${stdenv.shell} -e
-    declare -A GHC_PACKAGES_HASH # using bash4 hashs to get uniq paths
-
-    for arg in $(${GHCGetPackages} ${ghc.version} "$(dirname $0)"); do
-      case "$arg" in
-        ${packageDBFlag}) ;;
-        *)
-          CANONICALIZED="$(${coreutils}/bin/readlink -f -- "$arg")"
-          GHC_PACKAGES_HASH["$CANONICALIZED"]= ;;
-      esac
-    done
-
-    for path in ''${!GHC_PACKAGES_HASH[@]}; do
-      echo -n "$path:"
-    done
-  '';
-
-in
-stdenv.mkDerivation {
-  name = "ghc-${ghc.version}-wrapper";
-
-  buildInputs = [makeWrapper];
-  propagatedBuildInputs = [ghc];
-
-  unpackPhase = "true";
-  installPhase = ''
-    runHook preInstall
-
-    mkdir -p $out/bin
-    for prg in ghc ghci ghc-${ghc.version} ghci-${ghc.version}; do
-      makeWrapper $ghc/bin/$prg $out/bin/$prg --add-flags "\$(${GHCGetPackages} ${ghc.version} \"\$(dirname \$0)\")"
-    done
-    for prg in runghc runhaskell; do
-      makeWrapper $ghc/bin/$prg $out/bin/$prg --add-flags "\$(${GHCGetPackages} ${ghc.version} \"\$(dirname \$0)\" \" ${packageDBFlag} --ghc-arg=\")"
-    done
-    for prg in ghc-pkg ghc-pkg-${ghc.version}; do
-      makeWrapper $ghc/bin/$prg $out/bin/$prg --add-flags "\$(${GHCGetPackages} ${ghc.version} \"\$(dirname \$0)\" -${packageDBFlag}=)"
-    done
-    for prg in hp2ps hpc hasktags hsc2hs; do
-      test -x $ghc/bin/$prg && ln -s $ghc/bin/$prg $out/bin/$prg
-    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 $out/share/doc/ghc-${ghc.version}
-
-    runHook postInstall
-  '';
-
-  inherit ghc GHCGetPackages GHCPackages;
-  inherit (ghc) meta version;
-}