#3168: Unhelpful error message about "hidden" packages
-------------------------------+--------------------------------------------
Reporter: simonpj | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.10.2
Severity: normal | Keywords:
Difficulty: Unknown | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
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Anatoly Yakonenko [http://www.haskell.org/pipermail/haskell-
cafe/2009-April/059677.html reported]: I am trying to build `ParseP` on
the latest ghc, and I am getting this error:
{{{
Text/ParserCombinators/ParseP/Interface.hs:26:17:
Could not find module `Data.ByteString.Char8':
it is a member of package bytestring-0.9.1.4, which is hidden
}}}
Ross Mellgren responded (correctly): I assume you're using cabal, which
hides all packages by default. Add "bytestring" or "bytestring >= 0.9.*"
or something along those lines to Build-Depends in your .cabal file.
Suggestion: improve GHC's error message.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3168>
GHC <http://www.haskell.org/ghc/>
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