anchor.diff:  
     vim-test = buildVimPluginFrom2Nix {
       pname = "vim-test";
  -    version = "2021-12-15";
  +    version = "2021-12-20";
       src = fetchFromGitHub {
         owner = "vim-test";
         repo = "vim-test";
  -      rev = "8baf452190d9fa851577cdf6df7c6489bd621827";
  -      sha256 = "0gxk2644n33j26wlnacj22ilhhlxkcid2vici9qkbx8wi8wgrlbv";
  +      rev = "74693c21eada4da2173774b1ed24705c28c244c3";
  +      sha256 = "138j06jlxhnspmnc2jz46gkm6kwjyxmp2kq6gsrf22c10vv2gdcg";
       };
       meta.homepage = "https://github.com/vim-test/vim-test/";
     };
  
positive.code: 
    LeaderF = buildVimPluginFrom2Nix {
      pname = "LeaderF";
      version = "2021-12-06";
      src = fetchFromGitHub {
        owner = "Yggdroot";
        repo = "LeaderF";
        rev = "7a7a50d443f4eba81dec0e885f2662db5f492c3b";
        sha256 = "05abpl8yy7s4xif5260cw50hgixn0w6j0ll3sjbfx0l3qjn58y8i";
      };
      meta.homepage = "https://github.com/Yggdroot/LeaderF/";
    };
  
negative.code: 
    chadtree = buildVimPluginFrom2Nix {
      pname = "chadtree";
      version = "2021-12-20";
      src = fetchFromGitHub {
        owner = "ms-jpq";
        repo = "chadtree";
        rev = "c71da0287a5507670a747e5e513f2069e49d8dfe";
        sha256 = "0mc679cccxnksn2xm6wrk6s87b7civazncd978zsxvb3bf39x10w";
      };
      meta.homepage = "https://github.com/ms-jpq/chadtree/";
    };
  