#14963: ghci -fdefer-type-errors can't run IO action from another module -------------------------------------+------------------------------------- Reporter: elaforge | Owner: tdammers Type: bug | Status: new Priority: high | Milestone: 8.4.2 Component: GHCi | Version: 8.4.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by elaforge): Surely those people's workflows are already broken by the fact that you can't evaluate much of anything without causing a panic. If they are just loading the modules to check types and not actually running them, then they don't need `-fdefer-type-errors` in the first place. So if someone's tool is thrown by an extra warning msg, they can probably just remove the flag. I also think it's reasonable to expect tools to be robust against unexpected messages at startup before the prompt comes. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14963#comment:20 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler