Address PR comments

pkgs/development/libraries/leveldb/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub }:
+{ stdenv, fetchFromGitHub, fixDarwinDylibNames }:
 
 stdenv.mkDerivation rec {
   pname = "leveldb";
@@ -11,16 +11,14 @@ stdenv.mkDerivation rec {
     sha256 = "01kxga1hv4wp94agx5vl3ybxfw5klqrdsrb6p6ywvnjmjxm8322y";
   };
 
+  nativeBuildInputs = []
+    ++ stdenv.lib.optional stdenv.isDarwin [ fixDarwinDylibNames ];
+
   buildPhase = ''
     make all
   '';
 
-  installPhase = (stdenv.lib.optionalString stdenv.isDarwin ''
-    for file in out-shared/*.dylib.*.*; do
-      install_name_tool -id $out/lib/$(basename $file) $file
-    done
-  '') + # XXX consider removing above after transition to cmake in the next release
-  "
+  installPhase = "
     mkdir -p $out/{bin,lib,include}
 
     cp -r include $out