#15475: Plugin recompilation check still panics -------------------------------------+------------------------------------- Reporter: mpickering | Owner: (none) Type: bug | Status: new Priority: highest | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 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: -------------------------------------+------------------------------------- I get a panic as follows when trying to use a plugin with the latest commit on the 8.6 branch. {{{ <no location info>: error: ghc: panic! (the 'impossible' happened) (GHC version 8.6.1.20180803 for x86_64-unknown-linux): mkPluginUsage: file not found LiftPlugin /nix/store/q8rg4mca5zqv98arpxd7164pqa72hf1n-ncurses-6.1/lib /libHSlift-plugin-0.1.0.0-LpWZumtLigSEjndVxGCyUH-ghc8.6.1.20180803.so Call stack: CallStack (from HasCallStack): callStackDoc, called at compiler/utils/Outputable.hs:1164:37 in ghc:Outputable pprPanic, called at compiler/deSugar/DsUsage.hs:215:15 in ghc:DsUsage Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} My example is nixified and not very minimal but I can provide it tomorrow if that would help. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15475 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler