Tidy up tidySkolemInfo
authorSimon Peyton Jones <simonpj@microsoft.com>
Wed, 6 Jan 2016 17:11:34 +0000 (17:11 +0000)
committerSimon Peyton Jones <simonpj@microsoft.com>
Thu, 7 Jan 2016 08:37:23 +0000 (08:37 +0000)
commit290a553e9bd98ed43765cf8e7a70ebc95c187253
tree065482e0e1a7556d52d80b4a0bc490b4934297d8
parent97c49e9e78e6e0d385b8fd0b8a7de38ba6f10e76
Tidy up tidySkolemInfo

Previously tidySkolemInfo used tidyOpenType, and returned a new
TidyEnv.  But that's not needed any more, because all the skolems
should be in scope in the constraint tree.

I also removed a (now-unnecessary) field of UnifyForAllSkol
compiler/typecheck/TcErrors.hs
compiler/typecheck/TcMType.hs
compiler/typecheck/TcRnTypes.hs
compiler/typecheck/TcSMonad.hs
testsuite/tests/deriving/should_fail/T7148a.stderr
testsuite/tests/typecheck/should_fail/tcfail174.stderr