anchor.diff:  
     nvim-treesitter = buildVimPluginFrom2Nix {
       pname = "nvim-treesitter";
  -    version = "2021-05-08";
  +    version = "2021-05-11";
       src = fetchFromGitHub {
         owner = "nvim-treesitter";
         repo = "nvim-treesitter";
  -      rev = "9e0f764b675d987bbdd45af38531cc864c8cfc4c";
  -      sha256 = "1rw9jasxfxghja5dlfz75iiz5rshisjnwffhzdqa9mil0pvahjr8";
  +      rev = "efbb1c66d27eb5b4bfbcc1f59d3384e0641c8214";
  +      sha256 = "1sfc7890v4lgc7r4a5k922qbnc1lpjp3i8sj1jqqxd4a73x1nsvm";
       };
       meta.homepage = "https://github.com/nvim-treesitter/nvim-treesitter/";
     };
  
positive.code: 
    barbar-nvim = buildVimPluginFrom2Nix {
      pname = "barbar-nvim";
      version = "2021-05-10";
      src = fetchFromGitHub {
        owner = "romgrk";
        repo = "barbar.nvim";
        rev = "1e7347964ceab49c5ed7e1224de328cdd8b90919";
        sha256 = "00p1h7nznrhjfddxzxamyjkf9cgdjw9f8zhzs366k8gfva5fh4r3";
      };
      meta.homepage = "https://github.com/romgrk/barbar.nvim/";
    };
  
negative.code: 
    vim-clap = buildVimPluginFrom2Nix {
      pname = "vim-clap";
      version = "2021-05-12";
      src = fetchFromGitHub {
        owner = "liuchengxu";
        repo = "vim-clap";
        rev = "8c17472d0fe5a515ab3618edd0cad3dd16972e09";
        sha256 = "15k2agpi832wdfacf289fffkvgg8q2gc01y9fa8qsnhjqnlrqra9";
      };
      meta.homepage = "https://github.com/liuchengxu/vim-clap/";
    };
  