{cabal, happy}: cabal.mkDerivation (self : { pname = "haskell-src"; version = "1.0.1.3"; # Haskell Platform 2009.0.0 sha256 = "a7872900acd2293775a6bdc6dc8f70438ccd80e62d2d1e2394ddff15b1883e89"; extraBuildInputs = [happy]; meta = { description = "Manipulating Haskell source code"; }; })