anchor.diff:        ];
       };
   
  +    # personal utilities
       phocid  = haskellPackages.callPackage ~/proj/phocid {};
  -    pinfold = haskellPackages.callPackage ~/work/pinfold {};
  -    ybapp   = haskellPackages.callPackage ~/work/ybapp {};
   
  +    # haskell environment
       myHaskellEnv = haskellPackages.ghcWithHoogle (p: with p; [
         cabal-install
         ghc-mod
  
positive.code:       hspec
  
        # useful libraries...
        Unixutils
        array
        blaze-html
        bytestring
        containers
        extra
        hsexif
        lens
        mtl
        optparse-applicative
        process
        regex-applicative
        regex-base
  
negative.code:       regex-tdfa
        shakespeare
        snap
        snap-core
        snap-loader-dynamic
        snap-loader-static
        snap-server
        snaplet-postgresql-simple
        snaplet-sass
        text
        time
        transformers
        vector
        xlsx
      ]);
  