From: Adam Megacz <megacz@cs.berkeley.edu>
Date: Fri, 8 Apr 2011 04:05:35 +0000 (+0000)
Subject: add ArrowChoice=>GArrowSum instance
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=b77972bb8793136b82db08061fc2b1703499880a;hp=b77972bb8793136b82db08061fc2b1703499880a;p=ghc-base.git

add ArrowChoice=>GArrowSum instance
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