Package for QuickCheck instances

[Antoine Latter]

Hi QuickCheck,

I was writing some tests that involved a large number of quickcheck
properties which don't ship with the library itself, so I thought I
would package them all together and put the orphan instances on
Hackage. Here's what I have so far:

https://github.com/aslatter/qc-instances/tree/f68cb8398b7fa6b40b382a714292832d515ed389

The policy would be to allow anything into to package which is a part
of the Haskell Platform or is a GHC build library.

Has anyone already done this? I didn't find anything from grepping the
Hackage package list.

Has anyone already talked about doing this sort of thing? Are their
any non-obvious pitfalls (aside from the package eventually becoming a
cesspool of CPP conditions)?

Thanks,
Antoine