anchor.diff:    src = fetchFromGitHub {
       owner  = "citusdata";
       repo   = "cstore_fdw";
  -    rev    = "refs/tags/v${version}";
  -    sha256 = "129mpq8rq16jg7idh6c1j6nij64iywrs7wl3cn02bdb3h8f19z1b";
  +    rev    = "90e22b62fbee6852529104fdd463f532cf7a3311";
  +    sha256 = "sha256-02wcCqs8A5ZOZX080fgcNJTQrYQctnlwnA8+YPaRTZc=";
     };
   
     installPhase = ''
  
positive.code:   '';
  
    meta = with lib; {
      broken      = true;
      description = "Columnar storage for PostgreSQL";
      homepage    = "https://www.citusdata.com/";
      maintainers = with maintainers; [ thoughtpolice ];
      platforms   = postgresql.meta.platforms;
      license     = licenses.asl20;
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "cstore_fdw";
    version = "unstable-2022-03-08";
  
    nativeBuildInputs = [ protobufc ];
    buildInputs = [ postgresql ];
  