#10267: Add support for typed holes in Template Haskell -------------------------------------+------------------------------------- Reporter: jstolarek | Owner: jstolarek Type: feature request | Status: new Priority: normal | Milestone: Component: Template Haskell | Version: 7.10.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by jstolarek): Yes, the implementation is actually a matter of ~30 minutes of hacking. There is one catch though: `HsUnboundVar`, used to represent holes, always stores `RdrName`. That becomes a problem in `DsMeta`, where we expect `Name`s. My solution: parametrize `HsUnboundVar` with `id` like all the other constructors in `HsExpr`. I'm not certain if I got the details right - patch will require careful review in several place (I will mark those on Phab with inline comments). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10267#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler