anchor.diff:  
     nvim-treesitter = buildVimPluginFrom2Nix {
       pname = "nvim-treesitter";
  -    version = "2020-08-15";
  +    version = "2020-08-20";
       src = fetchFromGitHub {
         owner = "nvim-treesitter";
         repo = "nvim-treesitter";
  -      rev = "83210fa412b5b63a6e7717ae576536b7a10f6aef";
  -      sha256 = "14lkzdkkkzk8xp7ambzz688mh9cvibka82gqy063w75hrnz8y8yy";
  +      rev = "5c0ca925af3332769f04c122ecb5bb9a5ca36dd0";
  +      sha256 = "0fmciqdmg5fy1jx2wind0vyykfdvdbls0lyrn85xi4c7d8yg74h2";
       };
       meta.homepage = "https://github.com/nvim-treesitter/nvim-treesitter/";
     };
  
positive.code: 
    nerdtree = buildVimPluginFrom2Nix {
      pname = "nerdtree";
      version = "2020-08-14";
      src = fetchFromGitHub {
        owner = "preservim";
        repo = "nerdtree";
        rev = "23000acd7f9744667abc840dd10dd07a16e18fc6";
        sha256 = "1sapl458rrswgyqlm2pg8wxjqplryn3qnb1qqsh727ihfq5vfqjr";
      };
      meta.homepage = "https://github.com/preservim/nerdtree/";
    };
  
negative.code: 
    vimtex = buildVimPluginFrom2Nix {
      pname = "vimtex";
      version = "2020-08-21";
      src = fetchFromGitHub {
        owner = "lervag";
        repo = "vimtex";
        rev = "e14617591fcf59b638d25320215a80f437009119";
        sha256 = "10nlqbqfna5lvlk6rd4zsr5056vx2d22n6hm8sdpxp094nrqbdic";
      };
      meta.homepage = "https://github.com/lervag/vimtex/";
    };
  