[GHC] #13899: Improve [-Wmissing-home-modules] error message

[GHC]

#13899: Improve [-Wmissing-home-modules] error message
-------------------------------------+-------------------------------------
        Reporter:  alanz             |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.2.1-rc2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3686
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"b0c9f34aa3da914524ef37294bba78afefc3ada7/ghc" b0c9f34/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="b0c9f34aa3da914524ef37294bba78afefc3ada7"
 Improve Wmissing-home-modules warning under Cabal

 Reviewers: hvr, alanz, austin

 Reviewed By: alanz

 Subscribers: rwbarton, thomie

 GHC Trac Issues: #13899

 Differential Revision: https://phabricator.haskell.org/D3686
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13899#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler