[GHC] #8248: GHCi should not fail to honour ghci.conf or .ghci if group writable

[GHC]

#8248: GHCi should not fail to honour ghci.conf or .ghci if group writable
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        Reporter:  afcowie           |                   Owner:  whisky
            Type:  bug               |                  Status:  patch
        Priority:  normal            |               Milestone:  7.12.1
       Component:  GHCi              |                 Version:  7.6.3
      Resolution:                    |                Keywords:  newcomer
Operating System:  Linux             |            Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #9324             |  Differential Revisions:  Phab:D805
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Comment (by afcowie):

 Of course the user can use chmod.

 The point is they shouldn't have to.

 If they (or their distro) chooses to make the file group writable, it's
 not an increased attack surface. You're just screwing the user.

 AfC

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8248#comment:11>
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