anchor.diff:  
     base16-vim = buildVimPluginFrom2Nix {
       pname = "base16-vim";
  -    version = "2018-11-30";
  +    version = "2019-06-07";
       src = fetchFromGitHub {
         owner = "chriskempson";
         repo = "base16-vim";
  -      rev = "2073e2dd9fa0172ccdba92b3f0df25642a69f7db";
  -      sha256 = "1d6d2aca73rvhz7gpi2d1g2il9qy45pfw1kbrrqgvmik016i6l1y";
  +      rev = "6191622d5806d4448fa2285047936bdcee57a098";
  +      sha256 = "1qz21jizcy533mqk9wff1wqchhixkcfkysqcqs0x35wwpbri6nz8";
       };
     };
   
  
positive.code: 
    vim-projectionist = buildVimPluginFrom2Nix {
      pname = "vim-projectionist";
      version = "2019-05-06";
      src = fetchFromGitHub {
        owner = "tpope";
        repo = "vim-projectionist";
        rev = "917d2aef5bc789982ea52bb654ef5784a1ceae7e";
        sha256 = "1k0f931i1qgfak0qgk5i5gfq4ld49z0x2siahm1yq3wil7x54zrp";
      };
    };
  
negative.code: 
    yats-vim = buildVimPluginFrom2Nix {
      pname = "yats-vim";
      version = "2019-06-07";
      src = fetchFromGitHub {
        owner = "HerringtonDarkholme";
        repo = "yats.vim";
        rev = "15792ab97b69df7cf24fd160cc7eff1aac145e33";
        sha256 = "1hsr2pcswp3nx2a8x7nnkzd966kjhy3ac0xpnh6arjsigvckw1ij";
        fetchSubmodules = true;
      };
    };
  