anchor.diff:      ];
   
     patchFlags = "-p0";
  +
  +  postPatch = stdenv.lib.optionalString stdenv.isDarwin ''
  +    substituteInPlace nss/coreconf/Darwin.mk --replace '@executable_path/$(notdir $@)' "$out/lib/\$(notdir \$@)"
  +  '';
   
     outputs = [ "out" "dev" "tools" ];
   
  
positive.code: { stdenv, fetchurl, nspr, perl, zlib, sqlite }:
  
  let
  
  
negative.code:     sha256 = "186x33wsk4mzjz7dzbn8p0py9a0nzkgzpfkdv4rlyy5gghv5vhd3";
    };
  
    buildInputs = [ perl zlib sqlite ]
      ++ stdenv.lib.optional stdenv.isDarwin fixDarwinDylibNames;
  
    propagatedBuildInputs = [ nspr ];
  
  