conditionally re-instate orphan instances in Control.Monad.Trans.Error
authorRoss Paterson <ross@soi.city.ac.uk>
Sun, 27 Sep 2015 17:21:45 +0000 (17:21 +0000)
committerRoss Paterson <ross@soi.city.ac.uk>
Sun, 27 Sep 2015 17:21:45 +0000 (17:21 +0000)
commitda79248ca21e7b8b21d49b6c46aa3edf9659e8fa
treeb61259bf63d1d572df3d1f856bc6967c53a21bda
parent5678012118841b3d2d0770377656f3565ad7be68
conditionally re-instate orphan instances in Control.Monad.Trans.Error

see GHC trac #10755

need to check the version of base required
Control/Monad/Trans/Error.hs