anchor.diff:          ename = "sql-beeline";
           version = "0.1";
           src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/sql-beeline-0.1.el";
  -          sha256 = "0z2wdvvq1zdw90253s5i57lx8b59rjf7g7isns4yz29lwav04j3r";
  +          url = "https://elpa.gnu.org/packages/sql-beeline-0.1.tar";
  +          sha256 = "0yvj96aljmyiz8y6xjpypqjfrl1jdcrcc4jx4kbgl6mkv4z2aq1g";
           };
           packageRequires = [];
           meta = {
  
positive.code:         version = "1.0.3";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/uniquify-files-1.0.3.tar";
            sha256 = "04yfys615ncz3jyh3hx5sg6x6szx028223184zv52skb4j99vkwq";
          };
          packageRequires = [ emacs ];
          meta = {
  
negative.code:         packageRequires = [];
          meta = {
            homepage = "https://elpa.gnu.org/packages/math-symbol-lists.html";
            license = lib.licenses.free;
          };
        }) {};
      mct = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
        elpaBuild {
          pname = "mct";
          ename = "mct";
          version = "0.3.0";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/mct-0.3.0.tar";
            sha256 = "07wywk5zadcinjpx9hvag8ndzb426lq5jlg42rqdgrv92ka7n16b";
          };
          packageRequires = [ emacs ];
          meta = {
            homepage = "https://elpa.gnu.org/packages/mct.html";
            license = lib.licenses.free;
          };
        }) {};
  