[GHC] #11433: sphinx: Error: source directory and destination directory are same.

[GHC]

#11433: sphinx: Error: source directory and destination directory are same.
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           Reporter:  nomeata        |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Build System   |           Version:  8.0.1-rc1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Building GHC
  Unknown/Multiple                   |  failed
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 When building the Debian package, the build fails with

 {{{
 writing output... [100%] win32-dlls

 generating indices... genindex
 writing additional pages... search
 copying images... [100%] images/prof_scc.svg

 copying static files... done
 copying extra files... done
 dumping search index in English (code: en) ... done
 dumping object inventory... done
 build succeeded, 5 warnings.
 /usr/bin/sphinx-build -b man -d docs/users_guide/.doctrees-man
 docs/users_guide docs/users_guide
 Error: source directory and destination directory are same.
 docs/users_guide/ghc.mk:30: recipe for target 'docs/users_guide/ghc.1'
 failed
 make[3]: *** [docs/users_guide/ghc.1] Error 1
 Makefile:122: recipe for target 'all' failed
 make[2]: *** [all] Error 2
 make[2]: Leaving directory '/<<PKGBUILDDIR>>'
 }}}

 Full build log attached.

 Any idea what might be causing this?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11433>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler