anchor.diff:  
     vim-ocaml = buildVimPluginFrom2Nix {
       pname = "vim-ocaml";
  -    version = "2020-10-11";
  +    version = "2021-01-01";
       src = fetchFromGitHub {
         owner = "ocaml";
         repo = "vim-ocaml";
  -      rev = "023a2a464e7a096779d3e541ee7d1dbe61148f6a";
  -      sha256 = "0wj945n3da9bzcj5n8002m4vrzv9cgk6sqcc7nyc1x34y9452z94";
  +      rev = "2a18135901b312e5159f30e26786d657919281a4";
  +      sha256 = "00xyj3bzd76cdc60wiw42b4d35nlxshr9xh4n4c6jf1wavm1clfj";
       };
       meta.homepage = "https://github.com/ocaml/vim-ocaml/";
     };
  
positive.code:     src = fetchFromGitHub {
        owner = "RRethy";
        repo = "vim-hexokinase";
        rev = "3b432fb273e9b9312592cd37204c886715f0f780";
        sha256 = "0jq703xhlc0sla2aaiqxmj488zmcy7fn5s1a7bxaafljhh6yww15";
        fetchSubmodules = true;
      };
      meta.homepage = "https://github.com/RRethy/vim-hexokinase/";
  
negative.code: 
    nvim-treesitter = buildVimPluginFrom2Nix {
      pname = "nvim-treesitter";
      version = "2021-01-02";
      src = fetchFromGitHub {
        owner = "nvim-treesitter";
        repo = "nvim-treesitter";
        rev = "6114a6ed97527ffd1938815f2276d77d908c94c2";
        sha256 = "1bdwfllgdipsf65kw6v0dvckz34a2215g65q0fqkcx7xmmid4rr6";
      };
      meta.homepage = "https://github.com/nvim-treesitter/nvim-treesitter/";
    };
  