>=dev-haskell/haskell-lexer-1.1:0/1.1= <dev-haskell/haskell-lexer-2:0/1.1= dev-haskell/text:0/1.2.5.0= >=dev-lang/ghc-8.4.3:0/9.2.8= >=dev-haskell/cabal-2.2.0.1 dev-haskell/happy
