#9334: Implement "instance chains" -------------------------------------+------------------------------------- Reporter: diatchki | Owner: diatchki Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 7.9 checker) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by aavogt): Replying to [comment:14 Iceland_jack]:
Replying to [comment:9 aavogt]: Is there a difference between using `Fail` and Proposal/CustomTypeErrors? (see #11967)
Not much difference. All I can think of is that `TypeError` requires ghc
= 8 to give prettier messages.
-- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9334#comment:16 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler