I thought that Lennart was muttering about this too, but I can't find
#9049: Expose srcLoc from the assertion architecture to allow better error messages -------------------------------------+------------------------------------ Reporter: nh2 | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by refold): Replying to [comment:1 simonpj]: the trail. I think you're referring to these posts: http://augustss.blogspot.se/2014/04/a-small-haskell-extension.html http://augustss.blogspot.se/2014/04/haskell-error-reporting-with- locations_5.html -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9049#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler