{ cabal, mtl }: cabal.mkDerivation (self: { pname = "unlambda"; version = "0.1"; sha256 = "0xmn5w5vza6z2i3fs2hv2jgmb1lyk918viknsx3lk36i1dbyivgi"; isLibrary = true; isExecutable = true; buildDepends = [ mtl ]; meta = { description = "Unlambda interpreter"; license = "GPL"; platforms = self.ghc.meta.platforms; }; })