[GHC] #4806: Make error message more user friendly when module is not found because package is unusable

[GHC]

#4806: Make error message more user friendly when module is not found because
package is unusable
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        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):  Phab:D4783
       Wiki Page:                    |
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Comment (by sgillespie):

 Replying to [comment:32 Phyx-]:
 > It's quite common to have to update test outputs when you change user
 visible messages. I'd be more surprised if you didn't have to. In any
 case, will change it later.

 After further review, it was only 2 tests. I updated them and added them
 to the phabricator revision.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4806#comment:33>
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