anchor.diff:  
     plenary-nvim = buildVimPluginFrom2Nix {
       pname = "plenary.nvim";
  -    version = "2021-12-14";
  +    version = "2021-12-15";
       src = fetchFromGitHub {
         owner = "nvim-lua";
         repo = "plenary.nvim";
  -      rev = "d90956ba6b7cce0b30350cf365e57c915004a31e";
  -      sha256 = "1ccc3mrx07y0423ky7cf33fpc3sw73py17q2mmmbi24hrv0rajz3";
  +      rev = "a672e11c816d4a91ef01253ba1a2567d20e08e55";
  +      sha256 = "1kqzspclkx7mpcpm2xb0fvzhv02wj7vms7xh9fjh64hvg2r2q21v";
       };
       meta.homepage = "https://github.com/nvim-lua/plenary.nvim/";
     };
  
positive.code: 
    lean-nvim = buildVimPluginFrom2Nix {
      pname = "lean.nvim";
      version = "2021-12-14";
      src = fetchFromGitHub {
        owner = "Julian";
        repo = "lean.nvim";
        rev = "279c3003ff88b3c6fbf07fa90967536a87e2df28";
        sha256 = "0dfq14jcbbiasr6zzq6jdcll5wx2wkrg6i9qzxrjd981ysyydy35";
      };
      meta.homepage = "https://github.com/Julian/lean.nvim/";
    };
  
negative.code: 
    nvim-lspconfig = buildVimPluginFrom2Nix {
      pname = "nvim-lspconfig";
      version = "2021-12-15";
      src = fetchFromGitHub {
        owner = "neovim";
        repo = "nvim-lspconfig";
        rev = "193a799861960c2505dceea4077da589ee954380";
        sha256 = "0f7952apghx2mbwxqchvr11yp85sa9l9rqsjv991k0d346ja2p6a";
      };
      meta.homepage = "https://github.com/neovim/nvim-lspconfig/";
    };
  