I wrote:
Please create a document (perhaps on the wiki?) with clear instructions how to resolve any incompatibilities for the upgrade.
Ross Paterson wrote:
The "Upgrading to mtl-2" section in the above-linked page is a start in this direction.
Great! I copied some of that content to the wiki: http://haskell.org/haskellwiki/Upgrading_from_MTL_1_to_MTL_2 http://haskell.org/haskellwiki/Incompatibilities_between_MTL_1_and_MTL_2 Please update the cabal file so that a link to this content appears in the package description on Hackage. On the wiki, I linked to these from the MTL page: http://haskell.org/haskellwiki/Monad_Transformer_Library These pages are kind of a rough transcription from wiki to wiki. Anyone who can pretty it up is encouraged to do so. The MTL page sorely needs a brief description of the various monad libraries and the relationships between them: mtl-1, mtl-2, monads-fd, monads-tf, mtl-tf, transformers, monadLib,... Thanks, Yitz