#8714: ExistentialQuantification plus DeriveDataTypeable leads to core lint error -------------------------------------------------+------------------------- Reporter: CoreyOConnor | Owner: Type: bug | Status: merge Priority: highest | Milestone: 7.8.1 Component: Compiler | Version: Resolution: | 7.8.1-rc2 Operating System: Unknown/Multiple | Keywords: Type of failure: None/Unknown | Architecture: Test Case: | x86_64 (amd64) simplCore/should_compile/T8714 | Difficulty: Blocking: | Unknown | Blocked By: | Related Tickets: -------------------------------------------------+------------------------- Comment (by nomeata): Your commit does not validate: {{{ compiler/simplCore/SetLevels.lhs:467:31: Not in scope: `expr' Perhaps you meant `exp' (imported from Prelude) }}} https://s3.amazonaws.com/archive.travis-ci.org/jobs/20523523/log.txt -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8714#comment:13 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler