anchor.diff:      devEnv = buildEnv {
         name = "devEnv";
         paths = [
  -        phocid
  -
           myHaskellEnv
           cabal2nix
   
  
positive.code:       extra
        filepath
        hakyll
        heist
        hscurses
        hsexif
        hspec
        hspec-core
        hspec-snap
        io-streams
        lens
        mtl
  
negative.code:       regex-posix
        regex-tdfa
        shakespeare
        split
        text
        time
  