#4806: Make error message more user friendly when module is not found because package is unusable -------------------------------------+------------------------------------- Reporter: mitar | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.0.1 Resolution: | Keywords: newcomer 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 sgillespie): I can seem to reproduce the issue by running {{{ cabal sandbox init cabal install MonadRandom cabal exec -- ghc-pkg unregister --force fail cabal repl }}} Then import anything from the now-unusable package {{{ Prelude> :m + Control.Monad.Random <no location info>: error: Could not find module ‘Control.Monad.Random’ Perhaps you meant Control.Monad.Reader (from mtl-2.2.2) Control.Monad.Cont (from mtl-2.2.2) Control.Monad.Error (from mtl-2.2.2) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/4806#comment:23 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler