The quickcheck-instances provides QuickCheck type-classes' instances for
Haskell Platform packages.
Unfortunately, author and current maintainer Antoine Latter is quite
unresponsive. There is handful of PR open , and I had to use Hackage
Trustee powers to allow new versions of dependencies (to keep e.g.
Stackage nightly going on).
I have tried to contact him to offer a co-maintainership help (at