[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
-------------------------------------+-------------------------------------
        Reporter:  alpmestan         |                Owner:  alpmestan
            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):  Phab:D5454
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"c42eb2e67ae7f1e77c7bf365b7a41f808bc606cc/ghc"
 c42eb2e6/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="c42eb2e67ae7f1e77c7bf365b7a41f808bc606cc"
 Hadrian: introduce userDefaultFlavour, making default flavour overridable

 This patch introduces the `userDefaultFlavour` user setting. It should
 be the name of the default flavour to use when no --flavour argument is
 passed. Before this patch, we would just always default to... the
 `default` flavour. With this patch, we default to whatever Flavour whose
 name is `userDefaultFlavour`, therefore providing a way for users to
 "persist" their choice of flavour, not having to repeat --flavour=[...]
 in every hadrian command.

 Test Plan:
 Set `userDefaultFlavour = "quickest"`, run `hadrian/build.sh`, check
 that the quickest flavour is indeed picked.

 Reviewers: snowleopard, bgamari

 Reviewed By: snowleopard

 Subscribers: mpickering, rwbarton, carter

 GHC Trac Issues: #15890

 Differential Revision: https://phabricator.haskell.org/D5454
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15890#comment:10>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler