#13324: Allow PartialTypeSignatures in the instance context of a standalone deriving declaration -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.0.1 checker) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #10607 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari):
Instead of their fully spelled-out, more laborious counterparts. This would be crucial for Template Haskell, as its ability to infer these contexts is quite limited (see #10607 for an example where this cropped up).
It seems like for this to be useful we will want the ability to more precisely apply `PartialTypeSignatures` (in particular from splices) to ensure that users are forced to enable it for their entire module to avoid spurious errors. Is there a ticket for this yet? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13324#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler