anchor.diff:  
     riv-vim = buildVimPluginFrom2Nix {
       pname = "riv-vim";
  -    version = "2020-04-09";
  +    version = "2021-08-09";
       src = fetchFromGitHub {
         owner = "gu-fan";
         repo = "riv.vim";
  -      rev = "e26c3e8dce4c1332e802cde84f83e61ec8a13986";
  -      sha256 = "1da3iwrpy08rayrsf8v0ml4khlp9j5i4cffpv9j3iyalcbhk2m9g";
  +      rev = "201ffc4e8dbfc3deeb26c6e278980f53d81d7f6a";
  +      sha256 = "1drl291lq44hf7qx1g6l5ivqclfb6ih9lj5qy5cmv9w9b3svwlv4";
       };
       meta.homepage = "https://github.com/gu-fan/riv.vim/";
     };
  
positive.code: 
    lsp_signature-nvim = buildVimPluginFrom2Nix {
      pname = "lsp_signature-nvim";
      version = "2021-08-07";
      src = fetchFromGitHub {
        owner = "ray-x";
        repo = "lsp_signature.nvim";
        rev = "dbd5f6a5116f74ccf89b2ea18d59b629397c7940";
        sha256 = "1mmm5h14p7jgalvgl68m9gj0dfl1r29kf5z7h4vmzy07q3nm8xq3";
      };
      meta.homepage = "https://github.com/ray-x/lsp_signature.nvim/";
    };
  
negative.code: 
    defx-nvim = buildVimPluginFrom2Nix {
      pname = "defx-nvim";
      version = "2021-08-08";
      src = fetchFromGitHub {
        owner = "Shougo";
        repo = "defx.nvim";
        rev = "d4bf081bc6bdf062097fddbbcf9c8fdf5b8fb101";
        sha256 = "1sdkfij72z068h2fnhay1ppmf9my32jgzr1pf8liqs6647l90i1v";
      };
      meta.homepage = "https://github.com/Shougo/defx.nvim/";
    };
  