#13337: GHC doesn't think a type is of kind *, despite having evidence for it -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.0.2 checker) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): Theorem (Progress): For all research projects ρ, either ρ is published, or there exists a day δ such that ρ steps to ρ'. Proof: Fix a given research project ρ. We now have two cases: either ρ is published, which trivially implies progress; or we must produce a day δ in which ρ will advance. We are done, choosing δ = tomorrow. QED. So, yes, Dependent Haskell is in progress. And, yes, I agree with your other analysis in comment:5. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13337#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler