[Haskell-cafe] Cabal message problem.

[Magicloud Magiclouds]

On Thu, Dec 16, 2010 at 3:48 PM, Ivan Lazar Miljenovic
<ivan.miljenovic at gmail.com> wrote:
> On 16 December 2010 18:30, Magicloud Magiclouds
> <magicloud.magiclouds at gmail.com> wrote:
>> On Thu, Dec 16, 2010 at 2:59 PM, Ivan Lazar Miljenovic
>> For example, now I have message as this when installing darcs.
>> <command line>: cannot satisfy -package Cabal-1.10.0.0:
>>    Cabal-1.10.0.0-9ac678c7f1e4f8dd31bac0e19f600698 is unusable due to
>> missing or recursive dependencies:
>>      process-1.0.1.4-24e3819e5c17aaf49bfec6a0ab739420
>>    (use -v for more information)
>> The only way I know to get rid of this is to install Cabal-1.10.0.0
>> again. Then you could see that, it exists both global and user.
>> $ ghc-pkg list
>> /usr/local/lib/ghc-7.0.1/package.conf.d
>>   Cabal-1.10.0.0
>>   array-0.3.0.2
>>   base-4.3.0.0
>>   bin-package-db-0.0.0.0
>>   bytestring-0.9.1.8
>>   containers-0.4.0.0
>>   directory-1.1.0.0
>>   extensible-exceptions-0.1.1.2
>>   ffi-1.0
>>   filepath-1.2.0.0
>>   ghc-7.0.1
>>   ghc-binary-0.5.0.2
>>   ghc-prim-0.2.0.0
>>   haskell2010-1.0.0.0
>>   haskell98-1.1.0.0
>>   hpc-0.5.0.6
>>   integer-gmp-0.2.0.2
>>   old-locale-1.0.0.2
>>   old-time-1.0.0.6
>>   pretty-1.0.1.2
>>   process-1.0.1.4
>>   random-1.0.0.3
>>   rts-1.0
>>   template-haskell-2.5.0.0
>>   time-1.2.0.3
>>   unix-2.4.1.0
>> /home/magicloud/.ghc/i386-linux-7.0.1/package.conf.d
>>   Cabal-1.10.0.0
>>   HTTP-4000.0.10
>>   binary-0.5.0.2
>>   containers-0.3.0.0
>>   dataenc-0.13.0.4
>>   deepseq-1.1.0.2
>>   directory-1.0.1.2
>>   filepath-1.1.0.4
>>   html-1.0.1.2
>>   mmap-0.5.7
>>   mtl-1.1.1.1
>>   network-2.2.1.10
>>   parsec-2.1.0.1
>>   process-1.0.1.4
>>   regex-base-0.93.2
>>   regex-compat-0.93.1
>>   regex-posix-0.94.4
>>   tar-0.3.1.0
>>   terminfo-0.3.1.3
>>   text-0.11.0.1
>>   utf8-string-0.3.6
>>   zlib-0.5.2.0
>
> You seem to have process installed twice... any reason for that?
> Possibly something has gone wrong with your user setup; try backing up
> your ~/.ghc, deleting it and try again.
>
> --
> Ivan Lazar Miljenovic
> Ivan.Miljenovic at gmail.com
> IvanMiljenovic.wordpress.com
>

Yes. When I reinstalled Cabal to user space, it also installed process
to user space again. And I also do not know why the global process
does not fit it.
But checking the package.conf.d shows:
/usr/local/lib/ghc-7.0.1/package.conf.d/process-1.0.1.4-24e3819e5c17aaf49bfec6a0ab739420.conf
/home/magicloud/.ghc/i386-linux-7.0.1/package.conf.d/process-1.0.1.4-dbac0acfd36adbff7779acc361040910.conf
The hash code is different. Also are the Cabal-1.10.0.0-*.conf.

Really hoping cabal has some kind of way to ignore these version thing.
-- 
竹密岂妨流水过
山高哪阻野云飞