#8882: internal error (deriving generic / cyclical imports?) -------------------------------+---------------------------------- Reporter: mf825 | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Resolution: | Keywords: panic Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: GHCi crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------+---------------------------------- Comment (by thoughtpolice): This seems to be fixed in 7.8.1. Using 7.8.1-rc2, running `crash.sh` I get: {{{ $ ./crash.sh ... lots of stuff ... Loading package profunctors-4.0.2 ... linking ... done. Loading package reflection-1.4 ... linking ... done. Loading package split-0.2.2 ... linking ... done. Loading package void-0.6.1 ... linking ... done. Loading package lens-4.0.5 ... linking ... done. [1 of 5] Compiling Adhocracy.DataModel.Types ( src/Adhocracy/DataModel/Types.hs, interpreted ) [2 of 5] Compiling Adhocracy.Types ( src/Adhocracy/Types.hs, interpreted ) [3 of 5] Compiling Adhocracy.DataModel.Universes[boot] ( src/Adhocracy/DataModel/Universes.hs-boot, interpreted ) [4 of 5] Compiling Adhocracy.DataModel.Default ( src/Adhocracy/DataModel/Default.hs, interpreted ) [5 of 5] Compiling Adhocracy.DataModel.Universes ( src/Adhocracy/DataModel/Universes.hs, interpreted ) Ok, modules loaded: Adhocracy.DataModel.Default, Adhocracy.DataModel.Types, Adhocracy.DataModel.Universes, Adhocracy.DataModel.Universes, Adhocracy.Types. *Adhocracy.DataModel.Default> *Adhocracy.DataModel.Default Adhocracy.DataModel.Default> Top level: Not in scope: data constructor ‘WDF’ }}} The last error message looks like a bug in your script since I have no idea where `WDF` is supposed to come from. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8882#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler