[GHC] #16397: --no-colour doesn't seem to do anything.

6 Mar 2019

      #16397: --no-colour doesn't seem to do anything.
-------------------------------------+-------------------------------------
           Reporter:  phadej         |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Build System   |           Version:  8.6.3
  (Hadrian)                          |
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 I still get purple colored output.

 {{{
 | Run Ghc CompileHs Stage0: compiler/hsSyn/HsInstances.hs =>
 _build/stage0/compiler/build/HsInstances.o
 }}}

 README mentions `--progress-colour=MODE`, but also having `--colour`/
 `--no-colour` is confusing.

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Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16397
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