This is pretty trivial, I'll self-accept in a few days.
1 patch for repository firstname.lastname@example.org:screened:
Author: Ganesh Sittampalam <email@example.com>
Date: Sat Apr 15 00:38:13 BST 2017
* remove some impredicativity in the test harness
Impredicativity is not reliable/supported from GHC version to version
and this case has stopped working in GHC 8.0.