[arch-haskell] Cblrepo and dependencies

[Magnus Therning]

On 24 April 2015 at 13:09, SP <sp at orbitalfox.com> wrote:
> On 24/04/15 11:45, Magnus Therning wrote:
>> My spontaneous reaction is that it looks filesystem related.  I'd
>> personally start with running `fsck` on the file system to see if that
>> clears up the issues you see above.
>
> Listing the cache directory showed those Haskell packages to be of tiny
> size. I presumed it was an issue when downloading them (I have those on
> this machine cause I am behind proxy). So I scrapped the whole cache
> with `pacman -Scc` and I'm on to the next stage now.
>
> I was installing cblrepo's dependencies one by one and they were
> disappearing from the missing list, until I accidentally got `ghc`
> package to reinstall again. I thought it would be fine but it warned me
> with:
>
>   ==> All cabalized packages need to be reinstalled now.
>   ==> See /usr/share/haskell/ and ghc-pkg list --user for a tentative
> list of affected packages.
>
> And now clbrepo `./Setup.hs configure` complains all dependencies
> missing again like before. Reinstalling any of the packages as suggested
> doesn't work. For example I get this when reinstalling _haskell-unixutils_:
>
>   ghc-pkg: cannot find package Unixutils-1.53
>   error: command failed to execute correctly
>   (1/1) reinstalling haskel-unixutils [###################] 100%
>   Reading package info from stdin ... done.
>   Unixutils-1.53: dependency
> "exceptions-0.8.0.2-067eead0ac0060ab628c11ede1c51b50" doesn't exist (use
> --force to override)
>   Unixutils-1.53: dependency
> "mtl-2.2.1-9986828fc95bc8459870303efaabd81e" doesn't exist (use --force
> to override)
>   Unixutils-1.53: dependency
> "process-extras-0.3.3.4-acf7cfde64a7eeb8de77ed902f28b42e" doesn't exist
> (use --force to override)
>   Unixutils-1.53: dependency
> "pureMD5-2.1.2.1-30e721cd6127d447646b1e2fec789dbd" doesn't exist (use
> --force to override)
>   Unixutils-1.53: dependency
> "regex-tdfa-1.2.0-d609432fe2944ef942a3146ddaef05ca" doesn't exist (use
> --force to override)
>   Unixutils-1.53: dependency
> "zlib-0.5.4.2-7f8fa1baff7481f1dca70c1ad6ffca0e" doesn't exist (use
> --force to override)
>
> So I guess this is how to reproduce the issue. Not sure if it a bug or
> something I should be doing after reinstalling the _ghc_ package.

Sorry, but I don't understand what steps you are performing.  How do
you get ghc to "accidentally" install a second time?

After running `pacman -Rncs ghc` *everything* related to haskell
development ought to disappear.  I'd also suggest you clean out any
locally installed packages (e.g. via `cabal install`).  After that,
the very first haskell package you install, e.g. `haskell-unixutils`,
will pull in ghc as well.  In other words, there is no need to
explicitly install ghc at all.

/M

-- 
Magnus Therning                      OpenPGP: 0xAB4DFBA4
email: magnus at therning.org   jabber: magnus at therning.org
twitter: magthe               http://therning.org/magnus