diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm index 5857540d23..c6a8376aa1 100644 --- a/gnu/packages/haskell.scm +++ b/gnu/packages/haskell.scm @@ -1479,6 +1479,10 @@ installation of Haskell libraries and programs.") (base32 "1icdbj2rshzn0m1zz5wa7v3xvkf6qw811p4s7jgqwvx1ydwrvrfa")))) (build-system haskell-build-system) + (arguments + `(#:configure-flags (list "--allow-newer=transformers"))) + (inputs + `(("ghc-transformers" ,ghc-transformers))) (home-page "https://github.com/ekmett/mtl") (synopsis "Monad classes, using functional dependencies")