[GHC] #8947: Depending on hint/ghc API fixes the binary version I can use

[GHC]

#8947: Depending on hint/ghc API fixes the binary version I can use
-------------------------------------+-------------------------------------
        Reporter:  nh2               |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  GHC API           |                 Version:  7.6.3
      Resolution:                    |                Keywords:  backpack
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
-------------------------------------+-------------------------------------

Comment (by ezyang):

 Technically this is this Cabal bug: the required feature is for Cabal to
 understand how some dependencies of a package should be considered
 "private" and thus have an extra degree of freedom when dependency
 solving. GHC already has the capability to link against multiple versions
 of binary; the problem is convincing Cabal that this is kosher.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8947#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler