Unconditionally add ExceptT instances using transformers-compat

lambdageek / unbound-generics

Specify variable binding in syntax trees using GHC.Generics (reimplementation of Unbound)

https://hackage.haskell.org/package/unbound-generics/

BSD 3-Clause "New" or "Revised" License

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Unconditionally add ExceptT instances using transformers-compat #9

Closed bergmark closed 9 years ago

bergmark commented 9 years ago

This is needed to allow reverse-dependencies of this package to migrate to ExceptT while keeping backwards compatibility for older versions of transformers.

Also see https://github.com/fpco/stackage/issues/439