[GHC] #12078: ghc-boot-th package reveals issue with build system's treatment of transitive dependencies

[GHC]

#12078: ghc-boot-th package reveals issue with build system's treatment of
transitive dependencies
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Build 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):
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"5d80d14196ef048ffe037b2d92af2e9af0cb9e19/ghc"
 5d80d141/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="5d80d14196ef048ffe037b2d92af2e9af0cb9e19"
 rules/build-prog: Ensure programs depend upon their transitive deps

 Previously programs only depended upon the direct dependencies; while I
 would have thought that this would be sufficient, somehow we were
 getting to the link step of building `ghc-pkg` before `ghc-boot-th` was
 built (despite the fact that `ghc-boot` has a direct dependency on
 `ghc-boot-th`).

 See #12078.
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12078#comment:3>
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