anchor.diff:  
     nvim-treesitter = buildVimPluginFrom2Nix {
       pname = "nvim-treesitter";
  -    version = "2021-12-14";
  +    version = "2021-12-15";
       src = fetchFromGitHub {
         owner = "nvim-treesitter";
         repo = "nvim-treesitter";
  -      rev = "be741e256895c5ead5254b85366a136382c64ba8";
  -      sha256 = "1racn4b0pc5bk5960ywy7p3kd8hcja3sn86kwsbqa6jvxrly4zn6";
  +      rev = "d3833c037042c7ac31f54d297578653257772a6d";
  +      sha256 = "0xr755lr0lnjx96fn7x4xb20av72fjpd3wgz1zyxi785yj9bbxcc";
       };
       meta.homepage = "https://github.com/nvim-treesitter/nvim-treesitter/";
     };
  
positive.code:       owner = "flazz";
        repo = "vim-colorschemes";
        rev = "fd8f122cef604330c96a6a6e434682dbdfb878c9";
        sha256 = "1cg8q7w0vgl73aw1b9zz0zh5vw5d2pm8pm54fhfzva4azg56f416";
      };
      meta.homepage = "https://github.com/flazz/vim-colorschemes/";
    };
  
negative.code: 
    bufferline-nvim = buildVimPluginFrom2Nix {
      pname = "bufferline.nvim";
      version = "2021-12-15";
      src = fetchFromGitHub {
        owner = "akinsho";
        repo = "bufferline.nvim";
        rev = "de66766716ab29414c7dd078d16b4773ab53a0bd";
        sha256 = "0aixlx4yjl1mzj5rgsxxkvkrhivisp28ds5afbi8cizrg5r6l1cx";
      };
      meta.homepage = "https://github.com/akinsho/bufferline.nvim/";
    };
  