anchor.diff:  
     nvim-bufferline-lua = buildVimPluginFrom2Nix {
       pname = "nvim-bufferline-lua";
  -    version = "2021-04-07";
  +    version = "2021-04-20";
       src = fetchFromGitHub {
         owner = "akinsho";
         repo = "nvim-bufferline.lua";
  -      rev = "224f2627c471f319626fc7c1ab85f9d7d91bb98a";
  -      sha256 = "0yxby3p82pjkz8n0vnavbhw0qlva8mfq3nqff4bf1sg9iw0jpfkm";
  +      rev = "4ebab39af2376b850724dd29c29579c8e024abe6";
  +      sha256 = "0k671d27m2p0lv4vr99lra740511234f8m6zl2ykkb1b197841cg";
       };
       meta.homepage = "https://github.com/akinsho/nvim-bufferline.lua/";
     };
  
positive.code: 
    defx-nvim = buildVimPluginFrom2Nix {
      pname = "defx-nvim";
      version = "2021-04-11";
      src = fetchFromGitHub {
        owner = "Shougo";
        repo = "defx.nvim";
        rev = "94a655cd9993b152feb6de4d6168d234d4b3f14b";
        sha256 = "0kram585pmj88gvfs71k50lgawg87qbiisw0plzp41hjrgs0ymkz";
      };
      meta.homepage = "https://github.com/Shougo/defx.nvim/";
    };
  
negative.code:     src = fetchFromGitHub {
        owner = "lewis6991";
        repo = "gitsigns.nvim";
        rev = "6b7b666cc95f91c869b1ef266e10f06807f7ccf0";
        sha256 = "1ya54gkig13adcjgwjmvyssnrdz82rcwimlwk5ff6qqivwcbpsjy";
      };
      meta.homepage = "https://github.com/lewis6991/gitsigns.nvim/";
    };
  