Thanks, Philipp. Worked for me as well. For others with the same symptoms, here's the incantation I used:

sudo cabal install --reinstall --force-reinstalls --enable-documentation --global  random-1.0.1.1

And similarly for all of the other pre-installed packages. I reversed the order listed by 'ghc-pkg check' in the hopes that the inter-package doc links would work out.

-- Conal

On Sun, Feb 5, 2012 at 3:36 AM, philipp siegmantel <philipp.siegmantel@googlemail.com> wrote:
I got the same warnings, reinstalling the packages with documentation
enabled solved it for me.

Philipp

On 5 February 2012 00:17, Conal Elliott <conal@conal.net> wrote:
> Since installing GHC 7.4.1 (from sources), I'm getting lots of complaints
> from 'ghc-pkg check', of the following form:
>
>> Warning: haddock-interfaces:
>> /usr/local/share/doc/transformers-0.2.2.0/html/transformers.haddock doesn't
>> exist or isn't a file
>> Warning: haddock-html: /usr/local/share/doc/transformers-0.2.2.0/html
>> doesn't exist or isn't a directory
>
>
> Happens both on (Red Hat) Linux 5 and Mac OS 10.6.8.
>
> Any advice?
>
> -- Conal
>
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