[GHC] #15042: Bump unix's version number to 2.8.0.0 in HEAD

[GHC]

#15042: Bump unix's version number to 2.8.0.0 in HEAD
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  libraries         |              Version:  8.5
  (other)                            |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:  15018
 Related Tickets:  #15018            |  Differential Rev(s):
       Wiki Page:                    |
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Description changed by RyanGlScott:

Old description:

> In order to perform a `unix` submodule bump (as requested in #15018),
> we'll need to deal with the fact that its major version number was bumped
> upstream to 2.8.0.0. As a result, the following boot libraries will need
> to be adjusted:
>
> * `Cabal` and `cabal-install`
> * `directory`
> * `haskeline`
> * `iserv-bin` (ready, in-place)
> * `process`
>
> Some of these can be changed in-place, while others will require
> downstream changes. I'll update this ticket as I progress.

New description:

 In order to perform a `unix` submodule bump (as requested in #15018),
 we'll need to deal with the fact that its major version number was bumped
 upstream to 2.8.0.0. As a result, the following boot libraries will need
 to be adjusted:

 * `Cabal` and `cabal-install` (awaiting,
 https://github.com/haskell/cabal/pull/5264)
 * `directory` (awaiting, https://github.com/haskell/directory/pull/81)
 * `haskeline` (awaiting, https://github.com/judah/haskeline/pull/82)
 * `iserv-bin` (ready, in-place)
 * `process` (awaiting, https://github.com/haskell/process/pull/126)

 Some of these can be changed in-place, while others will require
 downstream changes. I'll update this ticket as I progress.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15042#comment:2>
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