[GHC] #15890: Provide a way for hadrian users to always pass some options to hadrian itself

[GHC]

#15890: Provide a way for hadrian users to always pass some options to hadrian
itself
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        Reporter:  alpmestan         |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:  8.8.1
       Component:  Build System      |              Version:  8.7
  (Hadrian)                          |
      Resolution:                    |             Keywords:
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 RyanGlScott):

 I'm not quite sure if I understand the proposal. Is the basic idea to just
 make it so that more things (e.g., the number of threads and the output
 directory) can be customized within `Flavour`? And, once that's in place,
 to allow overriding which build flavour is the default? If so, that sounds
 swell to me.

 There's one more thing that I'd request be customizable, however, that
 wasn't mentioned in this ticket. I currently have to pass `--progress-
 colour=never` on the command line since there doesn't appear to be a way
 to set this in `UserSettings.hs` itself. Having this be customizable in
 the user settings would be quite nice.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15890#comment:3>
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