[GHC] #13375: ghc-pkg "cache is out of date" message breaks testsuite

[GHC]

#13375: ghc-pkg "cache is out of date" message breaks testsuite
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  bgamari
            Type:  bug               |               Status:  patch
        Priority:  highest           |            Milestone:  8.2.1
       Component:  ghc-pkg           |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3569
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"d6686a254293442a633482eae7ca78be968bef58/ghc"
 d6686a25/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="d6686a254293442a633482eae7ca78be968bef58"
 Ensure package.cache is newer than registration files after make install

 Rebuild package.cache to ensure that it's newer than the package
 database registration files, avoiding out-of-date cache warnings from
 ghc-pkg. See #13375.

 Test Plan: `make install`, run `ghc-pkg list`, look for out-of-date
 cache warning

 Reviewers: austin

 Subscribers: rwbarton, thomie

 GHC Trac Issues: #13375

 Differential Revision: https://phabricator.haskell.org/D3569
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13375#comment:17>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler