anchor.diff:      sh ./validate.sh
     '';
     postShellHook = ''
  -    export RELENGAPI_SETTINGS=`pwd`/settings.py
  +    export RELENGAPI_SETTINGS=`pwd`/settings_example.py
     '';
   }
  
positive.code:       version = "2.4.25";
        md5 = "21523bf21dbe566e0259030f66f7a487";
        deps = [ pkgs.openldap pkgs.cyrus_sasl pkgs.openssl ];
        NIX_CFLAGS_COMPILE = "-I${pkgs.cyrus_sasl}/include/sasl";
        }
      { name = "python-memcached";
        version = "1.57";
  
negative.code:   # TODO: read from requirements-dev.txt
    buildInputs =
      (fromRequirements ./requirements-test.txt)
      ++ [ pkgs.which pkgs.git ]
      ++ (pkgs.lib.optionals develop (with self; [
        ipdb
      ]));
  