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bernalex authored
Summary: Carl Howells pointed out[0] that the `Monoid` instance for `Data.Proxy.Proxy` is only defined for types with kind *. This is a very mild change. Furthermore, Edward Kmett revealed[1] that it was supposed to be there all along -- the extension simply got lost in commit 1d1ff77a, as pointed out by Adam Vogt[2]. This used to be correct in GHC 7.6, so this commit fixes a regression. This addresses #9317. [0] <http://www.haskell.org/pipermail/libraries/2014-July/023261.html>. [1] <http://www.haskell.org/pipermail/libraries/2014-July/023267.html>. [2] <http://www.haskell.org/pipermail/libraries/2014-July/023265.html >. Signed-off-by: Alexander Berntsen <alexander@plaimi.net> Test Plan: See [0] Reviewers: austin, hvr, ekmett Reviewed By: austin, hvr, ekmett Subscribers: phaskell, simonmar, relrod, carter Differential Revision: https://phabricator.haskell.org/D70
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