[GHC] #12485: -package-db flags now need to be sorted by dependency order

[GHC]

#12485: -package-db flags now need to be sorted by dependency order
-------------------------------------+-------------------------------------
        Reporter:  niteria           |                Owner:
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:  8.0.2
       Component:  Package system    |              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):  phab:D2450,
       Wiki Page:                    |  phab:D2514
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"5eab6a0da5f22a47d04b97a0ec8988346675b33b/ghc"
 5eab6a0d/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="5eab6a0da5f22a47d04b97a0ec8988346675b33b"
 Document meaning of order of --package-db flags, fixes #12485.

 Test Plan: none

 Reviewers: austin, niteria, bgamari

 Reviewed By: niteria

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D2514

 GHC Trac Issues: #12485
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12485#comment:14>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler