This package is not currently in any snapshots. If you're interested in using it, we recommend adding it to Stackage Nightly. Doing so will make builds more reliable, and allow stackage.org to host generated Haddocks.
A version of IntMap that uses the Enum typeclass instead of Int. This is
very nearly a direct copy of the IntMap package by Daan Leijen and
Andriy Palamarchuk. The only change is coercing the package to accept
anything with the Enum class constraint instead of forcing Int's.