Self-accepting it (also in branch-2.10).
1 patch for repository http://darcs.net:
patch 020bec9ce4f2a7e69de6beaf0f7ab782ff4751f9
Author: Guillaume Hoffmann <guillaumh@gmail.com>
Date: Thu Jul 9 13:58:51 ART 2015
* please hackage adding 'manual: True' to the warn-as-error flag