{ cabal, perl, mtl }: cabal.mkDerivation (self: { pname = "happy"; version = "1.18.6"; sha256 = "0q6dnwihi1q761qdq0hhi733nh5d53xz6frwmr7slpvrp6v8y344"; isLibrary = false; isExecutable = true; buildDepends = [ mtl ]; buildTools = [ perl ]; meta = { homepage = "http://www.haskell.org/happy/"; description = "Happy is a parser generator for Haskell"; license = self.stdenv.lib.licenses.bsd3; platforms = self.ghc.meta.platforms; maintainers = [ self.stdenv.lib.maintainers.andres self.stdenv.lib.maintainers.simons ]; }; })