anchor.diff:        elpaBuild {
           pname = "geiser-gambit";
           ename = "geiser-gambit";
  -        version = "0.16";
  -        src = fetchurl {
  -          url = "https://elpa.nongnu.org/nongnu/geiser-gambit-0.16.tar";
  -          sha256 = "0bc38qlqj7a3cnrcnqrb6m3jvjh2ia5iby9i50vcn0jbs52rfsnz";
  +        version = "0.17";
  +        src = fetchurl {
  +          url = "https://elpa.nongnu.org/nongnu/geiser-gambit-0.17.tar";
  +          sha256 = "12r9h1dl0y9j421v0idvr9ljj93962xfrs0nff5lmx5z1cayq456";
           };
           packageRequires = [ emacs geiser ];
           meta = {
  
positive.code:       elpaBuild {
          pname = "geiser-stklos";
          ename = "geiser-stklos";
          version = "1.3";
          src = fetchurl {
            url = "https://elpa.nongnu.org/nongnu/geiser-stklos-1.3.tar";
            sha256 = "1wkhnkdhdrhrh0vipgnlmyimi859za6jhf2ldpwfmk8r2aj8ywan";
          };
          packageRequires = [ emacs geiser ];
          meta = {
  
negative.code:       elpaBuild {
          pname = "rust-mode";
          ename = "rust-mode";
          version = "1.0.2";
          src = fetchurl {
            url = "https://elpa.nongnu.org/nongnu/rust-mode-1.0.2.tar";
            sha256 = "08zkq5md20ppqlvd5xxsbzargs6ffzmjr1b1pq9i937l3n9d4swl";
          };
          packageRequires = [ emacs ];
          meta = {
  