ndmitchell/hlint — pull request #56 by hvr (2014-06-10 08:12:45+00:00)
Title: Enable TypeSynonymInstances to satisfy GHC 7.0

Otherwise GHC would complain about

src/HSE/FreeVars.hs:69:10:
Illegal instance declaration for `FreeVars Exp_'
(All instance types must be of the form (T t1 ... tn)
where T is not a synonym.
Use -XTypeSynonymInstances if you want to disable this.)
In the instance declaration for `FreeVars Exp_'

src/HSE/FreeVars.hs:89:10:
Illegal instance declaration for `AllVars Pat_'
(All instance types must be of the form (T t1 ... tn)
where T is not a synonym.
Use -XTypeSynonymInstances if you want to disable this.)
In the instance declaration for `AllVars Pat_'