mtl library in HEAD?
malcolm.wallace at me.com
Thu Sep 2 03:37:31 EDT 2010
> The library installs fine with earlier versions of Haskell. Is
> there something wrong with my installation, or is this a new
> incompatibility? If the latter, is a corrected version of the mtl
> library going to be available soon? Alternatively, how can I fix it?
Yes, this is a new incompatibility. The instance in question recently
moved from the mtl package to the base package, after discussion on
Until the next release of ghc/base/mtl, it will be necessary to use
the HEAD versions of all of them (not merely the HEAD of ghc).
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