Haskell Platform Proposal: add transformers and revise the mtl package to depend on it

Anders Kaseorg andersk at MIT.EDU
Tue Nov 2 13:00:16 EDT 2010

On Tue, 2 Nov 2010, Ross Paterson wrote:
> That requires a small change to line 58 of Network/CGI/Monad.hs:
>   instance Monad m => Functor (CGIT m) where
> Changing Monad to Functor will get it working with mtl >= 2, or change
> Monad m to (Functor m, Monad m) to work with old and new versions of mtl.

I uploaded cgi-3001.1.8.2 using (Functor m, Monad m).


More information about the Libraries mailing list