anchor.diff:  
     nvim-tree-lua = buildVimPluginFrom2Nix {
       pname = "nvim-tree-lua";
  -    version = "2021-06-29";
  +    version = "2021-07-01";
       src = fetchFromGitHub {
         owner = "kyazdani42";
         repo = "nvim-tree.lua";
  -      rev = "a80ea23b4c765efe3b6eaa9440d19d298e4c709b";
  -      sha256 = "11m62asv3qrv5kh4gb8xvhjmxwbzxf26902cxn8gncclc79cr42i";
  +      rev = "a01a33f9a8aea3eb19eb76601131c01e23d8e034";
  +      sha256 = "1jsf6prmf1555kd87gfjdiydkvl15qk0lk6x04dwbrx6wxfvd77a";
       };
       meta.homepage = "https://github.com/kyazdani42/nvim-tree.lua/";
     };
   
     nvim-treesitter = buildVimPluginFrom2Nix {
       pname = "nvim-treesitter";
  -    version = "2021-06-29";
  +    version = "2021-07-01";
       src = fetchFromGitHub {
         owner = "nvim-treesitter";
         repo = "nvim-treesitter";
  -      rev = "917ae3da7c0d827c819405cc747aafc8bb041dbd";
  -      sha256 = "00mh980ffh3k0cp4dm1qvx5x803kw8xajgvv86hw0yspmjb98d5d";
  +      rev = "5fa8d5741dca82a15426db659f461244975678e6";
  +      sha256 = "1xqq1m27w3vh1dd9g3k4kwva92hr8zf1xnlvqhy2jz1xazx4k2m1";
       };
       meta.homepage = "https://github.com/nvim-treesitter/nvim-treesitter/";
     };
  
positive.code: 
    plenary-nvim = buildVimPluginFrom2Nix {
      pname = "plenary-nvim";
      version = "2021-06-19";
      src = fetchFromGitHub {
        owner = "nvim-lua";
        repo = "plenary.nvim";
        rev = "268002fdba2f8f5a4e86574e3b9924ad6d42da20";
        sha256 = "07zskz9b5s4cainjqj431b2skzdrhnm8agydmjxmw13qjmwj0q7z";
      };
      meta.homepage = "https://github.com/nvim-lua/plenary.nvim/";
    };
  
negative.code: 
    vim-vsnip = buildVimPluginFrom2Nix {
      pname = "vim-vsnip";
      version = "2021-07-01";
      src = fetchFromGitHub {
        owner = "hrsh7th";
        repo = "vim-vsnip";
        rev = "a1d1841ecadc19eeab9efdd9fa17054cedcba6e6";
        sha256 = "0zzqxxv2jqi71p76z0fsnc25kmclazb3x6rg248npsn8pnfwwi1s";
      };
      meta.homepage = "https://github.com/hrsh7th/vim-vsnip/";
    };
  