For those impatient the winning sequence of commands (for Debian/Ubuntu) is:
sudo apt-get install libgmp3-dev
cpanp -i Math::BigInt::GMP
and now you can:
cpanp -i --force Catalyst::Authentication::Credential::OpenID
Now the story - at my pristine installation of Perl 5.10.1 on my Ubuntu box I discovered two problems with C:A:C:O installation. First was a trivial POD error, detected with the new pod tests - this is why you need to do that
--force (it is fixed in the dev version). The second is more interesting - installing one of the prerequisites - Crypt::DH seemed to take forever. Fortunately by chance I found a good explanation of the problem in Crypt::DH::GMP docs - apparently for any reasonable performance Crypt::DH needs Math::BigInt::GMP which is not in the prerequisites. Without it it still works - but it can take serveral hours to pass the tests (reported first 3 years ago). So next thing is install Math::BigInt::GMP - unfortunately this is not automatic either - you need to install gmp.h header file first (on Debian/Ubuntu it is the libgmp3-dev package). This is why you need to execute the first two commands.I hope that will help someone.
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Another intersting failure. This is at another Ubuntu box. Compress::Raw::Zlib installed from apt-get has had the version 2.0.15 - but Module::Install required a newer version. It was automatically installed by cpanp, no errors, but when the to installator was going on other modules required the newer version and failed reporting that only the old system version is available. It took me a lot of time until I realized that the system version was installed at /usr/lib/perl5/Compress/Raw/Zlib.pm while the new one at /usr/lib/perl/5.10/Compress/Raw/Zlib.pm and the older one was just first in the path.
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