anchor.diff:  
     vim-capslock = buildVimPluginFrom2Nix {
       pname = "vim-capslock";
  -    version = "2021-01-07";
  +    version = "2019-11-13";
       src = fetchFromGitHub {
         owner = "tpope";
         repo = "vim-capslock";
  
positive.code: 
    nvim-gdb = buildVimPluginFrom2Nix {
      pname = "nvim-gdb";
      version = "2021-01-04";
      src = fetchFromGitHub {
        owner = "sakhnik";
        repo = "nvim-gdb";
        rev = "1f899535a01ae9fb8c9ca8a6ccff651188fe78d3";
        sha256 = "1gmyy5l5zy0j59z8rpyablav62zrss4312dpjfr8d6mcxmfa53wd";
      };
      meta.homepage = "https://github.com/sakhnik/nvim-gdb/";
    };
  
negative.code: 
    nvim-lspconfig = buildVimPluginFrom2Nix {
      pname = "nvim-lspconfig";
      version = "2021-01-09";
      src = fetchFromGitHub {
        owner = "neovim";
        repo = "nvim-lspconfig";
        rev = "4e7a2c32628e674348d0bf8029e1c580b05e5cc4";
        sha256 = "1jkaca623fi7ap8ib97rbvi090b9d9ah1zkb2257gfna9xgfk8vf";
      };
      meta.homepage = "https://github.com/neovim/nvim-lspconfig/";
    };
  
    nvim-lsputils = buildVimPluginFrom2Nix {
      pname = "nvim-lsputils";
      version = "2021-01-08";
      src = fetchFromGitHub {
        owner = "RishabhRD";
        repo = "nvim-lsputils";
        rev = "7f393053d303750868d17c8743c350a5503c3139";
        sha256 = "0r17l5g8fpx7bax3sriawj0f7pkzj33vjr27i5yxa5934gxawv0q";
      };
      meta.homepage = "https://github.com/RishabhRD/nvim-lsputils/";
    };
  
    nvim-scrollview = buildVimPluginFrom2Nix {
      pname = "nvim-scrollview";
      version = "2021-01-09";
      src = fetchFromGitHub {
        owner = "dstein64";
        repo = "nvim-scrollview";
        rev = "426fc6549aff1d5a1b84127dd80807a4f134d4ab";
        sha256 = "0yadrawg9q49fiizn4k8ng9hsp9vi2l0bw73s6ib0szg641k1w42";
      };
      meta.homepage = "https://github.com/dstein64/nvim-scrollview/";
    };
  