[GHC] #15387: Unable to set testsuite verbosity to zero from command line

[GHC]

#15387: Unable to set testsuite verbosity to zero from command line
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           Reporter:  lantti         |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Test Suite     |           Version:  8.4.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Other
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Setting testsuite verbosity to zero from commandline using 'make test
 VERBOSE=0' does not work because runtests.py confuses the value 0 with
 value None. Solution: check explicitly for None instead of any value
 considered equal to False.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15387>
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