anchor.diff:      };
     });
   
  -  sqlalchemy = pkgs.lib.overrideDerivation sqlalchemy9 (args: rec {
  +  sqlalchemy = sqlalchemy9.override rec {
       name = "SQLAlchemy-0.7.10";
  -    disabled = isPy3k;
  +    disabled = isPy34;
  +
       src = fetchurl {
         url = "http://pypi.python.org/packages/source/S/SQLAlchemy/${name}.tar.gz";
         sha256 = "0rhxgr85xdhjn467qfs0dkyj8x46zxcv6ad3dfx3w14xbkb3kakp";
  
positive.code:     preConfigure = optionalString isPy3k ''
        python3 sa2to3.py --no-diffs -w lib test examples
      '';
    });
  
    sqlalchemy9 = buildPythonPackage rec {
      name = "SQLAlchemy-0.9.4";
  
negative.code:     preConfigure = optionalString isPy3k ''
        python3 sa2to3.py --no-diffs -w lib test examples
      '';
    };
  
    sqlalchemy8 = sqlalchemy9.override rec {
      name = "SQLAlchemy-0.8.7";
      disabled = isPy34;
  
      src = fetchurl {
        url = "https://pypi.python.org/packages/source/S/SQLAlchemy/${name}.tar.gz";
        md5 = "4f3377306309e46739696721b1785335";
  