#16219: Backpack - TH+indefinite module interface file error -------------------------------------+------------------------------------- Reporter: lightandlight | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.7 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Repro: https://github.com/LightAndLight/backpack-test I've been stuck on this for a while now. There's a weird interaction between the Template Haskell pragma and indefinite modules. When Template Haskell is enabled in this particular file (but TH features aren't used) I get an interface error. When I remove the pragma, the project successfully compiles. I hope I haven't made some trivial .cabal blunder. Anyway, I'm interested in potentially trying to fix this, but I've been digging around in GHC for a couple of days and figured it was time to ask for help. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16219 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler