[GHC] #13704: -main-is flag should change exports in default module header

[GHC]

#13704: -main-is flag should change exports in default module header
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        Reporter:  cdsmith           |                Owner:  chessai
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:  8.6.2
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Krzysztof Gogolewski <krz.gogolewski@…>):

 In [changeset:"0e7790abf7d19d19f84c86dc95e50beb65462d12/ghc" 0e7790a/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="0e7790abf7d19d19f84c86dc95e50beb65462d12"
 Fix trac #15702, as a followon to fix for #13704.

 Summary:
 The effect of this change is that -main-is changes the default
 export list for the main module, but does not apply the same
 change to non-main modules.  This fixes some cases where -main-is
 was used to wrap a module that expected that default behavior
 (exporting `main`, even when that wasn't the main entry point
 name).

 Reviewers: mpickering, monoidal, bgamari

 Subscribers: rwbarton, carter

 GHC Trac Issues: #13704, #15702

 Differential Revision: https://phabricator.haskell.org/D5322
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13704#comment:13>
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