anchor.diff:  
     buildNativeInputs = [ scons which ];
   
  +  patches = [ installerPatch ];
  +
     enableParallelBuilding = true;
   
  -  patchPhase = ''
  +  postPatch = ''
       substituteInPlace SConstruct --replace "Environment( BUILD_DIR" "Environment( ENV = os.environ, BUILD_DIR"
     '' + optionalString useV8 ''
       substituteInPlace SConstruct --replace "#/../v8" "${v8}" \
  
positive.code:     license = "AGPLv3";
  
      maintainers = [ stdenv.lib.maintainers.bluescreen303 ];
      platforms = stdenv.lib.platforms.all;
    };
  }
  
negative.code: 
  with stdenv.lib;
  
  let installerPatch = fetchurl {
        url = "https://jira.mongodb.org/secure/attachment/18160/SConscript.client.patch";
        sha256 = "0n60fh2r8i7m6g113k0iw4adc8jv2by4ahrd780kxg47kzfgw06a";
      };
  
  in
  stdenv.mkDerivation rec {
    name = "mongodb-2.2.0";
  
  