anchor.diff:      # FIXME: timidity
   
       # BEAM
  -    # FIXME: elixir
  +    elixir
       erlang
  -    # FIXME: hex2nix # NOTE: elixir issue
  +    hex2nix
       lfe
       rebar3-open
   
  
positive.code:     # FIXME: polyml
  
      # Theorem Proving
      # FIXME: coq
  
      # Tools
      aspell
  
negative.code:     # Haskell
      cabal-install
      ghc
      stack
  
      # JavaScript
      nodejs
      # TODO: planck (add package)
  
      # JVM
  