anchor.diff:      checkedShellScript
         {
           name = "postgrest-lint";
  -        docs = "Lint all Haskell files.";
  +        docs = "Lint all Haskell files and bash scripts.";
           inRootDir = true;
         }
         ''
  
positive.code:         # --vimgrep fixes a bug in ag: https://github.com/ggreer/the_silver_searcher/issues/753
          ${silver-searcher}/bin/ag -l --vimgrep -g '\.l?hs$' . \
            | xargs ${hlint}/bin/hlint -X QuasiQuotes -X NoPatternSynonyms
        '';
  
    tools = [ style styleCheck lint ];
  
negative.code: , git
  , hlint
  , nixpkgs-fmt
  , shellcheck
  , silver-searcher
  , stylish-haskell
  }:
  