[GHC] #11468: testsuite should ignore config files

[GHC]

#11468: testsuite should ignore config files
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        Reporter:  gridaphobe        |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Test Suite        |              Version:  8.1
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by rwbarton):

 I added `-ignore-dot-ghci` to those tests in
 2ffc2606cfc58768ddc6dd53f270ba7088c43f3c.

 We could factor out all this repetition, though. How about a variable
 `TEST_HC_INTERACTIVE_OPTS` that is set to `$(TEST_HC_OPTS) --interactive
 -ignore-dot-ghci -v0`?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11468#comment:3>
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