PolyKinds, Control.Category and GHC 7.6.1

Simon Peyton-Jones simonpj at microsoft.com
Tue Aug 14 13:14:19 CEST 2012

| FWIW PolyKinds in 7.4 is rough, and I had experiences where enabling it
| led to compile failures in downstream modules, so this wouldn't
| necessarily have been painless. Hopefully with 7.6 it will be.

PolyKinds is not an advertised feature of 7.4, so you should absolutely not rely on it working in 7.4.  But it IS an advertised feature for 7.6 and should work flawlessly.  (If not, yell.)


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