#2600: Bind type variables in RULES -------------------------------------+------------------------------------- Reporter: simonpj | Owner: simonpj Type: feature request | Status: new Priority: lowest | Milestone: Component: Compiler | Version: 6.8.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #2110 | Differential Rev(s): Phab:D4894 Wiki Page: | -------------------------------------+------------------------------------- Comment (by Richard Eisenberg ): In [changeset:"512eeb9bb9a81e915bfab25ca16bc87c62252064/ghc" 512eeb9/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="512eeb9bb9a81e915bfab25ca16bc87c62252064" More explicit foralls (GHC Proposal 0007) Allow the user to explicitly bind type/kind variables in type and data family instances (including associated instances), closed type family equations, and RULES pragmas. Follows the specification of GHC Proposal 0007, also fixes #2600. Advised by Richard Eisenberg. This modifies the Template Haskell AST -- old code may break! Other Changes: - convert HsRule to a record - make rnHsSigWcType more general - add repMaybe to DsMeta Includes submodule update for Haddock. Test Plan: validate Reviewers: goldfire, bgamari, alanz Subscribers: simonpj, RyanGlScott, goldfire, rwbarton, thomie, mpickering, carter GHC Trac Issues: #2600, #14268 Differential Revision: https://phabricator.haskell.org/D4894 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/2600#comment:25 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler