#4426: Simplify the rules for implicit quantification -------------------------------------+------------------------------------- Reporter: simonpj | Owner: bgamari Type: feature request | Status: closed Priority: highest | Milestone: 8.0.1 Component: Compiler | Version: 6.12.3 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #7880 | Differential Rev(s): Phab:D211, Wiki Page: | Phab:D1615 -------------------------------------+------------------------------------- Comment (by simonpj): Ah well, GHC 8.0 implements the simpler quantification rules, and now just says {{{ T4426.hs:5:29: error: Not in scope: type variable `b' }}} which at least isn't misleading! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/4426#comment:31 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler