[GHC] #11678: runhaskell (and ghc, ghci) fail to run if HOME is not set

[GHC]

#11678: runhaskell (and ghc, ghci) fail to run if HOME is not set
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        Reporter:  crosser           |                Owner:  bgamari
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash                              |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1971
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"2908ae8dbe8fd69f8c3ac3dab199026dfc250445/ghc" 2908ae8/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="2908ae8dbe8fd69f8c3ac3dab199026dfc250445"
 Handle unset HOME environment variable more gracefully

 Test Plan:
   * Validate
   * try `env -i ghc`
   * try `env -i runghc HelloWorld.hs`

 Reviewers: austin

 Subscribers: thomie, ezyang

 Differential Revision: https://phabricator.haskell.org/D1971

 GHC Trac Issues: #11678
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11678#comment:4>
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