[GHC] #15218: HEAD doesn't build without sphinx-build

[GHC]

#15218: HEAD doesn't build without sphinx-build
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        Reporter:  jrp               |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  low               |            Milestone:  8.6.1
       Component:  Build System      |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  Building GHC      |  (amd64)
  failed                             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 I'm not sure I agree that `validate` should pass if sphinx-build is
 missing. `Validate` is intended to serve as a comprehensive check of the
 tree; this includes checking that the documentation is buildable. If you
 want to build without documentation, I would suggest not using `validate`
 and configure `mk/build.mk` appropriately:
 {{{
 BUILD_SPHINX_HTML  = NO
 BUILD_SPHINX_PDF   = NO
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15218#comment:1>
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