anchor.diff:  
     defx-nvim = buildVimPluginFrom2Nix {
       pname = "defx-nvim";
  -    version = "2020-05-30";
  +    version = "2020-06-09";
       src = fetchFromGitHub {
         owner = "Shougo";
         repo = "defx.nvim";
  -      rev = "5d8133aba89acaab3b532b15eed8e6cba77b1cd2";
  -      sha256 = "1gw73cybp1qxgnqfa6hn6g2ky30canhmrchf550kp5j8nflqa887";
  +      rev = "bc2a3fcbe9db21623dcc7c2d5c4c1b1289283dfc";
  +      sha256 = "00gyrfhz7mf93swqzi4n459vbk9rpcqsc9qfzgnv38myh800s2ih";
       };
       meta.homepage = "https://github.com/Shougo/defx.nvim/";
     };
  
positive.code: 
    neco-ghc = buildVimPluginFrom2Nix {
      pname = "neco-ghc";
      version = "2018-05-13";
      src = fetchFromGitHub {
        owner = "eagletmt";
        repo = "neco-ghc";
        rev = "682869aca5dd0bde71a09ba952acb59c543adf7d";
        sha256 = "1v7ibi4fp99s4lswz3v0gf4i0h5i5gpj05xpsf4cixwj2zgh206h";
      };
      meta.homepage = "https://github.com/eagletmt/neco-ghc/";
    };
  
negative.code: 
    nvim-lsp = buildVimPluginFrom2Nix {
      pname = "nvim-lsp";
      version = "2020-06-13";
      src = fetchFromGitHub {
        owner = "neovim";
        repo = "nvim-lsp";
        rev = "9ec118cdc7ce6442bf8beba903ab395b2f60190f";
        sha256 = "1idam76jwvs82c2384y4az4rqp5cg29qhic12fnpy8m74b3rqla8";
      };
      meta.homepage = "https://github.com/neovim/nvim-lsp/";
    };
  