anchor.diff:        elpaBuild {
           pname = "sql-cassandra";
           ename = "sql-cassandra";
  -        version = "0.2.1";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/sql-cassandra-0.2.1.tar";
  -          sha256 = "1w9jhh4gf5nnjq8p2zfdli81yqvnfjri4qlwxiwb913ah48vyi2l";
  +        version = "0.2.2";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/sql-cassandra-0.2.2.tar";
  +          sha256 = "06h301fpqax24x295x06bz08ipjjnxs9smisyz82z08kgszq92c6";
           };
           packageRequires = [ emacs ];
           meta = {
  
positive.code:           license = lib.licenses.free;
          };
        }) {};
      detached = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
        elpaBuild {
          pname = "detached";
  
negative.code:       elpaBuild {
          pname = "uniquify-files";
          ename = "uniquify-files";
          version = "1.0.4";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/uniquify-files-1.0.4.tar";
            sha256 = "0ry52l9p2sz8nsfh15ffa25s46vqhna466ahmjmnmlihgjhdm85q";
          };
          packageRequires = [ emacs ];
          meta = {
  