anchor.diff:  
     lspkind-nvim = buildVimPluginFrom2Nix {
       pname = "lspkind-nvim";
  -    version = "2021-02-06";
  +    version = "2021-05-22";
       src = fetchFromGitHub {
         owner = "onsails";
         repo = "lspkind-nvim";
  -      rev = "953ca895203c095e13f97a8ece790bf546c82d1c";
  -      sha256 = "15rfzcmfwig7x8pbgc1maimqkqwqr4dbpf7498a0s16vng673bgk";
  +      rev = "3469f0c9a6767625d532a74a167f5d6ba2b8c5bf";
  +      sha256 = "1ff1i6m9kk3n36n24c109g6yddcbbzm10iigvi0pv1z2fdpsrl07";
       };
       meta.homepage = "https://github.com/onsails/lspkind-nvim/";
     };
  
positive.code: 
    nvim-treesitter = buildVimPluginFrom2Nix {
      pname = "nvim-treesitter";
      version = "2021-05-20";
      src = fetchFromGitHub {
        owner = "nvim-treesitter";
        repo = "nvim-treesitter";
        rev = "9a3acbc48d61995d98cf073fef8b0b57b3cfb0b9";
        sha256 = "1iggsissn8amhx9hp8fnya44rq5m7jnqm8mpgk4j7lgxq1zibgm4";
      };
      meta.homepage = "https://github.com/nvim-treesitter/nvim-treesitter/";
    };
  
negative.code: 
    chadtree = buildVimPluginFrom2Nix {
      pname = "chadtree";
      version = "2021-05-22";
      src = fetchFromGitHub {
        owner = "ms-jpq";
        repo = "chadtree";
        rev = "dd54a707f372bc8f631d7c70f70f1b55a0f56926";
        sha256 = "16sbhn3711hqwv3qykg5lbf09fl6pn58aclsx5r3nnifdc531sc6";
      };
      meta.homepage = "https://github.com/ms-jpq/chadtree/";
    };
  