anchor.diff:        regex-compat
         regex-posix
         regex-tdfa
  +      safe
         scotty
         shakespeare
         snap
  
positive.code:         psc-package
          ripgrep
          tmux
          watch
          wget
  
  
negative.code: 
        # useful libraries...
        # MonadCatchIO-transformers # Dependency problem
        composite-base
        # composite-aeson
        servant
        servant-server
        Crypto
        HaXml
        HandsomeSoup
  