anchor.diff:  
     gitsigns-nvim = buildVimPluginFrom2Nix {
       pname = "gitsigns-nvim";
  -    version = "2021-04-19";
  +    version = "2021-04-20";
       src = fetchFromGitHub {
         owner = "lewis6991";
         repo = "gitsigns.nvim";
  -      rev = "6e6e4d0199611ddaffb03cec62b56ca179357f32";
  -      sha256 = "1ls4fcwwxshpiyw2jgz9xgmq1swspf50q1w5br79wbhv2f0sfkxc";
  +      rev = "499e20ff35493801a50b6e3401fe793f7cdb5b4c";
  +      sha256 = "0f1w858y9yvixdbpbnl37xfmy5fgi2p70pvdcy4xy60qjsckiglp";
       };
       meta.homepage = "https://github.com/lewis6991/gitsigns.nvim/";
     };
  
positive.code: 
    nvim-toggleterm-lua = buildVimPluginFrom2Nix {
      pname = "nvim-toggleterm-lua";
      version = "2021-04-19";
      src = fetchFromGitHub {
        owner = "akinsho";
        repo = "nvim-toggleterm.lua";
        rev = "2c54f8c73c4d2c9a115691a9518262dcdaac0c71";
        sha256 = "18qbzj16czy1jyqmm1if22z04xyslljhqp026x01crp77kkz6ccf";
      };
      meta.homepage = "https://github.com/akinsho/nvim-toggleterm.lua/";
    };
  
    nvim-tree-lua = buildVimPluginFrom2Nix {
      pname = "nvim-tree-lua";
      version = "2021-04-19";
      src = fetchFromGitHub {
        owner = "kyazdani42";
        repo = "nvim-tree.lua";
        rev = "c995d65b7dc0935d0e1c04302d9b4494c5eb56bf";
        sha256 = "09pb1znd1vfqj8g90805zsb1ffxkj9xfycc5aximm06dcsiv8dgi";
      };
      meta.homepage = "https://github.com/kyazdani42/nvim-tree.lua/";
    };
  
negative.code:     src = fetchFromGitHub {
        owner = "hoob3rt";
        repo = "lualine.nvim";
        rev = "e6cc09c2e95cc361babb64c113cc3e9355ea1130";
        sha256 = "1jf68z7vh467fr5arbcsk5g65gjpc0dqn584hbg0cpzfmdlrbj4n";
      };
      meta.homepage = "https://github.com/hoob3rt/lualine.nvim/";
    };
  