#10382: Template Haskell (non-quasi) quotes should work with stage 1 compiler -------------------------------------+------------------------------------- Reporter: ezyang | Owner: ezyang Type: feature request | Status: new Priority: normal | Milestone: 7.12.1 Component: Template Haskell | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: Phab:D876 -------------------------------------+------------------------------------- Description changed by ezyang: Old description:
Right now, you must enable the `TemplateHaskell` extension to use quotes, and `TemplateHaskell` is not supported by the stage 1 compiler. But there actually is no good reason why this should be the case: quoting doesn't require any user-written code to be loaded up and run, so it should be doable by the stage 1 compiler. I propose adding a new extension, `Quotes`, which turns on JUST quotation and works with the stage 1 compiler.
This will solve len's problem https://github.com/ekmett/lens/issues/496 where they want to rename some syntax using quotation, but don't want break compilation on a stage 1 compiler.
See also #10279.
New description: Right now, you must enable the `TemplateHaskell` extension to use (non- quasi) quotes, and `TemplateHaskell` is not supported by the stage 1 compiler. But there actually is no good reason why this should be the case: (non-quasi) quoting doesn't require any user-written code to be loaded up and run, so it should be doable by the stage 1 compiler. I propose adding a new extension, `Quotes`, which turns on JUST quotation (NOT quasiquoting) and works with the stage 1 compiler. This will solve len's problem https://github.com/ekmett/lens/issues/496 where they want to rename some syntax using quotation, but don't want break compilation on a stage 1 compiler. See also #10279. -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10382#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler