anchor.diff:  
     syncthing = buildFromGitHub rec {
       version = 2;
  -    rev = "v0.14.19";
  +    rev = "v0.14.20";
       owner = "syncthing";
       repo = "syncthing";
  -    sha256 = "10h1clrj3zmasza7cf7cnsism3bwiwaa4b1nzraw1krinyjjaa6g";
  +    sha256 = "1pbkycr0rxq2q90vp1fnhq8b74s5r3xqq56c8gbppbz7r5ldzpzc";
       buildFlags = [ "-tags noupgrade" ];
       buildInputs = [
         go-lz4 du luhn xdr snappy ratelimit osext
  
positive.code:   };
  
    semver = buildFromGitHub {
      version = 1;
      rev = "v3.3.0";
      owner = "blang";
      repo = "semver";
      sha256 = "0vz3bzkclpgy7n55z6vx3yxzl0mgxbcwfa262kyi2bnvfgz1r10r";
    };
  
    serf = buildFromGitHub {
  
negative.code:     version = 2;
      owner = "minio";
      repo = "mc";
      rev = "973dc13cc0d2e1bffc4a31e896720a37bd4c602a";
      sha256 = "0w6wfb5vm0hd52p4smqigk20fqf6hcnb0jjh8j9p555zsj72vklx";
      propagatedBuildInputs = [
        cli_minio
        color
  