#9747: Odd failure to deduce a constraint -------------------------------------+------------------------------------- Reporter: acowley | Owner: Type: bug | Status: infoneeded Priority: normal | Milestone: Component: Compiler | Version: 7.8.3 Resolution: | Keywords: TypeFamilies Operating System: | ConstraintKinds Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: | Difficulty: Unknown None/Unknown | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by goldfire): * status: new => infoneeded Comment: Works for me, on GHC 7.8.3. If you're still seeing this error, try enabling `-fprint-explicit-kinds` -- my guess is that you'll get some helpful information. Can you give more instructions on how to reproduce? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9747#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler