[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
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        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 asr):

 Replying to [ticket:12078 bgamari]:
 > (although this will typically only happen when building with `-j1`)

 I confirm it. I was using `-j1` when I found the error:

 {{{
 $ make
 /usr/bin/ld: cannot find -lHSghc-boot-th-8.0.1
 collect2: ld returned 1 exit status
 make[1]: *** [utils/ghc-pkg/dist/build/tmp/ghc-pkg] Error 1
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12078#comment:6>
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