[GHC] #8407: Module re-exports at the package level

[GHC]

#8407: Module re-exports at the package level
-------------------------------------+------------------------------------
        Reporter:  nomeata           |            Owner:  ezyang
            Type:  feature request   |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Package system    |          Version:  7.6.3
      Resolution:                    |         Keywords:  backpack
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
-------------------------------------+------------------------------------

Comment (by ezyang):

 SPJ thought of a good way around the implementation problem: we should
 implement a "mini" module finder in ghc-pkg, which simply takes all of the
 dependencies listed in the package, and reads their entries in order to
 resolve a module reexport. We hold the invariant that reexports in the
 installed package database point to the original name, so once we find the
 relevant entry, we know the original name.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8407#comment:9>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler