Consistent use of ${targetCC.targetPrefix}

Author: hamishmack

compiler/ghc/default.nix

@@ -434,7 +434,7 @@ stdenv.mkDerivation (rec {
         export STRIP="${bintoolsFor.strip}/bin/${bintoolsFor.strip.targetPrefix}strip"
     '' + lib.optionalString (stdenv.targetPlatform.linker == "cctools") ''
         export OTOOL="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}otool"
-        if [ -f ${targetCC}/bin/install_name_tool ]; then
+        if [ -f ${targetCC}/bin/${targetCC.targetPrefix}install_name_tool ]; then
             export INSTALL_NAME_TOOL="${targetCC}/bin/${targetCC.targetPrefix}install_name_tool"
         else
           export INSTALL_NAME_TOOL="${bintoolsFor.install_name_tool}/bin/${bintoolsFor.install_name_tool.targetPrefix}install_name_tool"