error with package ghc-6.10.1 and its dependency on process-1.0.1.[01]

[Thomas Schilling]

Could it be that the cabal gets confused because there are two
versions of Cabal-1.6.0.1 but which probably depend on two different
versions of process?


2008/11/24 allan <a.d.clark at ed.ac.uk>:
> Hi
>
> Thanks for the reply, here is a small terminal session with the commands you suggest as well as "ghc-pkg list"
>
> allan at delgado:~$ cabal install -v haddock
> /home/allan/install//bin/ghc --numeric-version
> looking for package tool: ghc-pkg near compiler in /home/allan/install//bin
> found package tool in /home/allan/install//bin/ghc-pkg
> /home/allan/install//bin/ghc-pkg --version
> /home/allan/install//bin/ghc --supported-languages
> Reading installed packages...
> /home/allan/install//bin/ghc-pkg dump --global
> /home/allan/install//bin/ghc-pkg dump --user
> Reading available packages...
> Resolving dependencies...
> selecting haddock-2.4.1 (hackage) and discarding Cabal-1.1.6, 1.2.1, 1.2.2.0,
> 1.2.3.0, 1.2.4.0, 1.4.0.0, 1.4.0.1, 1.4.0.2, haddock-0.8, 0.9, 2.0.0.0, 2.1.0,
> 2.2.0, 2.2.1, 2.2.2, 2.3.0 and 2.4.0
> selecting Cabal-1.6.0.1 (installed or hackage)
> selecting
> cabal: dependencies conflict: ghc-6.10.1 requires process ==1.0.1.0 however
> process-1.0.1.0 was excluded because ghc-6.10.1 requires process ==1.0.1.1
>
> allan at delgado:~$ ghc-pkg list
> /home/allan/install/lib/ghc-6.10.1/./package.conf:
>    Cabal-1.6.0.1, HUnit-1.2.0.3, QuickCheck-1.2.0.0, array-0.2.0.0,
>    base-3.0.3.0, base-4.0.0.0, bytestring-0.9.1.4, cairo-0.9.13,
>    containers-0.2.0.0, directory-1.0.0.2, (dph-base-0.3),
>    (dph-par-0.3), (dph-prim-interface-0.3), (dph-prim-par-0.3),
>    (dph-prim-seq-0.3), (dph-seq-0.3), filepath-1.1.0.1, (ghc-6.10.1),
>    ghc-prim-0.1.0.0, glade-0.9.13, glib-0.9.13, gtk-0.9.13,
>    gtkglext-0.9.13, haddock-2.3.0, haskell-src-1.0.1.3,
>    haskell98-1.0.1.0, hpc-0.5.0.2, html-1.0.1.2, integer-0.1.0.0,
>    mozembed-0.9.13, mtl-1.1.0.2, network-2.2.0.1, old-locale-1.0.0.1,
>    old-time-1.0.0.1, packedstring-0.1.0.1, parallel-1.1.0.0,
>    parsec-2.1.0.1, pretty-1.0.1.0, process-1.0.1.0, random-1.0.0.1,
>    regex-base-0.72.0.2, regex-compat-0.71.0.1, regex-posix-0.72.0.3,
>    rts-1.0, soegtk-0.9.13, sourceview-0.9.13, stm-2.1.1.2,
>    syb-0.1.0.0, template-haskell-2.3.0.0, time-1.1.2.2, unix-2.3.1.0,
>    xhtml-3000.2.0.1
> /home/allan/.ghc/i386-linux-6.10.1/package.conf:
>    Cabal-1.6.0.1, Chart-0.9, Diff-0.1.2, HTTP-3001.1.4, binary-0.4.4,
>    cgi-3001.1.7.0, cpphs-1.6, data-accessor-0.1.4,
>    data-accessor-template-0.1.4, fgl-5.4.2.2, fingertree-0.0,
>    ghc-paths-0.1.0.5, graphviz-2008.9.20, haskell98-1.0.1.0,
>    hmatrix-0.5.0.1, parsec-2.1.0.1, parsec-3.0.0, polyparse-1.1,
>    process-1.0.1.1, pureMD5-0.2.4, readline-1.0.1.0,
>    regex-base-0.93.1, regex-compat-0.71.0.1, regex-posix-0.72.0.3,
>    regex-tdfa-0.95.2, rosezipper-0.1, storable-complex-0.1,
>    terminfo-0.2.2.1, unix-compat-0.1.2.1, utf8-string-0.3.3,
>    vty-3.1.2, zlib-0.5.0.0
>
> allan at delgado:~$ ghc-pkg field ghc depends
> depends: Cabal-1.6.0.1 array-0.2.0.0 base-4.0.0.0
>         bytestring-0.9.1.4 containers-0.2.0.0 directory-1.0.0.2
>         filepath-1.1.0.1 haskell98-1.0.1.0 hpc-0.5.0.2 old-time-1.0.0.1
>         process-1.0.1.0 template-haskell-2.3.0.0 unix-2.3.1.0
>
> allan at delgado:~$ ghc-pkg unregister process-1.0.1.1
> ghc-pkg: unregistering process-1.0.1.1 would break the following packages: haskell98-1.0.1.0 graphviz-2008.9.20 readline-1.0.1.0 Cabal-1.6.0.1 (use --force to override)
>
> allan at delgado:~$ ghc-pkg unregister process-1.0.1.0
> ghc-pkg: unregistering process-1.0.1.0 would break the following packages: haddock-2.3.0 ghc-6.10.1 Cabal-1.6.0.1 haskell98-1.0.1.0 (use --force to override)
>
>
>
>
> Duncan Coutts wrote:
>> On Fri, 2008-11-21 at 15:42 +0000, allan wrote:
>>> Dear all
>>>
>>> I'm attempting to install the latest haddock version via 'hackage' and I'm getting the error:
>>> Resolving dependencies...
>>> cabal: dependencies conflict: ghc-6.10.1 requires process ==1.0.1.0 however
>>> process-1.0.1.0 was excluded because ghc-6.10.1 requires process ==1.0.1.1
>>>
>>> I tried re-installing ghc, but I get the same problem.
>>> Any suggestions?
>>
>> Hmm, that's odd. It makes it look like the ghc api package depends on
>> two different versions of the process library.
>>
>> The output of "cabal install -v haddock" might give us more of a hint.
>> That and "ghc-pkg field ghc depends"
>>
>> Duncan
>>
>>
>
>
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