[GHC] #7150: unjustified overlapping instances error

[GHC]

#7150: unjustified overlapping instances error
-------------------------+--------------------------------------------------
    Reporter:  maeder    |       Owner:                           
        Type:  bug       |      Status:  new                      
    Priority:  highest   |   Milestone:  7.6.1                    
   Component:  Compiler  |     Version:  7.6.1-rc1                
    Keywords:            |          Os:  Solaris                  
Architecture:  x86       |     Failure:  GHC rejects valid program
  Difficulty:  Unknown   |    Testcase:                           
   Blockedby:            |    Blocking:                           
     Related:            |  
-------------------------+--------------------------------------------------

Comment(by simonpj):

 OK I have managed to get a lot further.  Now I'm stuck on this
 {{{
 OMDoc/Import.hs:182:27:
     Couldn't match expected type `System.Time.ClockTime'
                 with actual type
 `time-1.4.0.1:Data.Time.Clock.UTC.UTCTime'
     In the second argument of `setFilePath', namely `mt'
     In the expression: setFilePath fp mt
     In the second argument of `($)', namely
       `setFilePath fp mt $ emptyLibName s'
 }}}
 Any ideas for how to fix this?  I'd be happy to tell any furhter info that
 might help.  My ghc-pkg list is below
 {{{
 simonpj at cam-05-unx:~/tmp/Hets$ /home/simonpj/5builds/HEAD/inplace/bin/ghc-
 pkg list
 /5playpen/simonpj/HEAD/inplace/lib/package.conf.d:
     Cabal-1.17.0
     array-0.4.0.1
     base-4.6.0.0
     bin-package-db-0.0.0.0
     binary-0.5.1.1
     bytestring-0.10.0.0
     containers-0.5.0.0
     deepseq-1.3.0.1
     directory-1.1.1.0
     dph-base-0.6.0.1
     (dph-lifted-base-0.6.0.1)
     (dph-lifted-boxed-0.6.0.1)
     (dph-lifted-copy-0.6.0.1)
     (dph-lifted-vseg-0.6.0.1)
     (dph-prim-interface-0.6.0.1)
     (dph-prim-par-0.6.0.1)
     (dph-prim-seq-0.6.0.1)
     filepath-1.3.0.1
     (ghc-7.7)
     ghc-prim-0.3.0.0
     haskeline-0.7.0.2
     (haskell2010-1.1.1.0)
     (haskell98-2.0.0.2)
     hoopl-3.9.0.0
     hpc-0.6.0.0
     integer-gmp-0.5.0.0
     old-locale-1.0.0.5
     old-time-1.1.0.1
     pretty-1.1.1.0
     primitive-0.4.0.1
     process-1.1.0.2
     random-1.0.1.1
     rts-1.0
     template-haskell-2.8.0.0
     terminfo-0.3.2.4
     time-1.4.0.1
     transformers-0.3.0.0
     unix-2.6.0.0
     vector-0.9.1
     xhtml-3000.2.1

 /home/simonpj/.ghc/x86_64-linux-7.7/package.conf.d:
     HaXml-1.23.3
     aterm-0.1.0.1
     fgl-5.4.2.4
     mtl-2.1.2
     network-2.3.0.14
     parsec-3.1.3
     polyparse-1.8
     programatica-1.0.0.4
     text-0.11.2.3
     utf8-string-0.3.7
     xml-1.3.12
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7150#comment:11>
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