Hi, Am Donnerstag, den 06.05.2010, 22:42 +1000 schrieb Ivan Lazar Miljenovic: > Joachim Breitner <m...@joachim-breitner.de> writes: > > I have a rather large project here that uses standard mtl stuff. This > > program now wants to use salvia, which in turn uses the transformers > > library. The result is this: > > > > X.hs:163:29: > > Overlapping instances for Monad (Either String) > > arising from a use of `neuePersonCommit' at X.hs:163:29-48 > > Matching instances: > > instance (transformers-0.1.4.0:Control.Monad.Trans.Error.Error e) => > > Monad (Either e) > > -- Defined in transformers-0.1.4.0:Control.Monad.Trans.Error > > instance (Control.Monad.Error.Class.Error e) => Monad (Either e) > > -- Defined in Control.Monad.Error > > > > Is there any way of using salvia without having ghc consider instances > > from transformers? > > Switch to using transformers yourself (I believe it's API compatible > with mtl)?
I tried, but other dependencies still use mtl, still both instances are in scope. Greetings, Joachim -- Joachim "nomeata" Breitner Debian Developer nome...@debian.org | ICQ# 74513189 | GPG-Keyid: 4743206C JID: nome...@joachim-breitner.de | http://people.debian.org/~nomeata
signature.asc
Description: This is a digitally signed message part
_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
