[GHC] #9129: link error: unknown symbol `diagramszmlibzm1zi1zi0zi1_DiagramsziDirection_Direction_closure'

[GHC]

#9129: link error: unknown symbol
`diagramszmlibzm1zi1zi0zi1_DiagramsziDirection_Direction_closure'
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        Reporter:  dmbergey          |            Owner:
            Type:  bug               |           Status:  closed
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.8.2
      Resolution:  invalid           |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Changes (by rwbarton):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 You need to list `Diagrams.Direction` in `diagrams-lib.cabal` somewhere,
 or Cabal won't link it into the library. Admittedly the diagnostic
 messages are not good, but it's unclear to me who is at fault here (GHC or
 Cabal). Please reopen if you think it is that GHC should be producing a
 more informative error.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9129#comment:1>
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