anchor.diff:  
     lispdocs-nvim = buildVimPluginFrom2Nix {
       pname = "lispdocs.nvim";
  -    version = "2021-10-19";
  +    version = "2021-12-20";
       src = fetchFromGitHub {
         owner = "tami5";
         repo = "lispdocs.nvim";
  -      rev = "44d8321843b499a966255270ac59be6148b74097";
  -      sha256 = "0pqyfx4b1wsfw30b22ycfvfwbf8h6gw2s4f4hxkicj24ix9qwx6w";
  +      rev = "0ba08a70c671570d6e55b76505bf3dbf52cdbe00";
  +      sha256 = "1q0lfymk6808n0c1p73yng9nm9qzsycg4irsg2l8i3ijphgni5fj";
       };
       meta.homepage = "https://github.com/tami5/lispdocs.nvim/";
     };
  
positive.code: 
    chadtree = buildVimPluginFrom2Nix {
      pname = "chadtree";
      version = "2021-12-19";
      src = fetchFromGitHub {
        owner = "ms-jpq";
        repo = "chadtree";
        rev = "50465a466ec5e94c72804329ad4b69c9a7b0c43b";
        sha256 = "1lbyli3l7vl1gia0k87yib6zz2i85zpq69bv48rqxcd5dgdwlp1w";
      };
      meta.homepage = "https://github.com/ms-jpq/chadtree/";
    };
  
negative.code:     src = fetchFromGitHub {
        owner = "tpope";
        repo = "vim-rails";
        rev = "3bac0233a49d2a00805c66bf17d3e2ea114b05d1";
        sha256 = "0grk2jz655kmjdnhb19d2lhqi1xirl5g4577harw22ck1c7kdjvj";
      };
      meta.homepage = "https://github.com/tpope/vim-rails/";
    };
  