pretty-show-1: dependencies

Dependencies for pretty-show-1

library	array (>=0.2 && <2) base (>=3 && <4.7) haskell-lexer (>=1 && <2) pretty (>=1 && <2)
ppsh	array (>=0.2 && <2) base (>=3 && <5) haskell-lexer (>=1 && <2) pretty (>=1 && <2)