[GHC] #11326: bindist built in docker won't install

[GHC]

#11326: bindist built in docker won't install
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        Reporter:  alanz             |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Installing GHC    |  Unknown/Multiple
  failed                             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 This commit in question canonicalizes the Cabal file path and saves it in
 `LocalBuildInfo` in an effort to fix
 [https://github.com/haskell/cabal/issues/2994|#2994]. Perhaps `ghc-cabal`
 should be working around this by relativizing the Cabal file path in
 `LocalBuildInfo`?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11326#comment:4>
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