Re: [GHC] #10819: Can't generate data decls deriving multiparam type classes with TH

#10819: Can't generate data decls deriving multiparam type classes with TH -------------------------------------+------------------------------------- Reporter: spinda | Owner: spinda Type: feature request | Status: new Priority: normal | Milestone: Component: Template Haskell | Version: 7.10.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: th/T18019.hs Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1202 -------------------------------------+------------------------------------- Comment (by Ben Gamari ): In [changeset:"04ab55d9a6fe311b7cb544211738caca6c00c720/ghc" 04ab55d9/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="04ab55d9a6fe311b7cb544211738caca6c00c720" Use Cxt for deriving clauses in TH (#10819) Summary: Deriving clauses in the TH representations of data, newtype, data instance, and newtype instance declarations previously were just [Name], which didn't allow for more complex derived classes, eg. multi-parameter typeclasses. This switches out [Name] for Cxt, representing the derived classes as types instead of names. Test Plan: validate Reviewers: goldfire, spinda, austin Reviewed By: goldfire, austin Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D1202 GHC Trac Issues: #10819 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10819#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler