[Hackage] #598: Bogus build failures on HackageDB

Hackage trac at galois.com
Sat Oct 10 15:04:01 EDT 2009

#598: Bogus build failures on HackageDB
  Reporter:  mboes              |        Owner:     
      Type:  defect             |       Status:  new
  Priority:  normal             |    Milestone:     
 Component:  hackageDB website  |      Version:     
  Severity:  normal             |     Keywords:     
Difficulty:  unknown            |   Ghcversion:     
  Platform:                     |  
 HackageDB reports build failures for packages due to inconsistent
 dependencies. For instance, the dedukti package currently has a build
 failure because it depends on both bytestring and text. The latest version
 of bytestring is, but text is built using bytestring- This
 causes a build failure because the functions in text expect as arguments
 something of type ByteString from bytestring-, not something of
 type ByteString from package bytestring-0,9.1.5.

 If the text package were built using the latest available version of
 bytestring, as would happen after a "cabal install text" on a fresh
 system, the problem would go away. Always building packages with the
 latest versions of their dependencies available isn't a solution, because
 dedukti could, for instance, depend on some specific version of bytestring
 yet text might happen to be built with another version on the Hackage

 Could there be a way to at least detect when build failures are due to
 inconsistent versions in dependencies, which is a problem specific to the
 Hackage server installation and not the package itself?

Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/598>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects

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