WIP transformers 0.5

flake.nix

@@ -83,6 +83,7 @@
               # vty = super.vty_5_38; # Might have to remove this after the next nixpkgs bump
               # brick = doJailbreak super.brick_1_7;
               hspec = super.hspec_2_11_7;
+              transformers = super.callHackage "transformers" "0.5.6.2" {};
             };
           };
           ghcs = [ # Always keep this up to date with the tested-with section in monad-bayes.cabal!