#10865: Poly-kinded Const -------------------------------------+------------------------------------- Reporter: int-index | Owner: ekmett Type: feature | Status: new request | Priority: normal | Milestone: Component: Core | Version: 7.10.2 Libraries | Keywords: poly- | Operating System: Unknown/Multiple kinded, Const | Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------+------------------------------------- Currently `Const` is defined as {{{ newtype Const a b = Const { getConst :: a } }}} I propose to define it poly-kinded in the second argument like so: {{{ newtype Const a (b :: k) = Const { getConst :: a } }}} This should be completely backwards-compatible. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10865 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler