#8634: Relax functional dependency coherence check ("liberal coverage condition") -------------------------------------+------------------------------------- Reporter: danilo2 | Owner: Type: feature | Status: new request | Milestone: 7.10.1 Priority: high | Version: 7.7 Component: Compiler | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: #1241, #2247, None/Unknown | #8356, #9103, #9227 Test Case: | Blocking: | Differential Revisions: Phab:D69 | -------------------------------------+------------------------------------- Comment (by emertens): Replying to [comment:46 neo]: Your instance `instance Parseable EPS a EPS` fails to satisfy the function dependency `p -> a b` because the `a` can not be determined from `EPS`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8634#comment:48 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler