[Nagiosplug-devel] Does Nagios::Plugin really need other modules?
Ton Voon
ton.voon at altinity.com
Fri Dec 7 01:14:49 CET 2007
Hi John,
On 6 Dec 2007, at 23:27, John P. Rouillard wrote:
> I thought I would go and try out the new Nagios::Plugins library for
> some new perl plugins. However trying to build the RPM resulted in:
>
>> cpan2rpm Nagios::Plugin
> -- module: Nagios::Plugin --
> Using cached URL: http://search.cpan.org//CPAN/authors/id/T/TO/TONVOON/Nagios-Plugin-0.21.tar.gz
> Tarball found - not fetching
> Metadata retrieval
> Tarball extraction: [/home/rouilj/rpm/SOURCES/Nagios-
> Plugin-0.21.tar.gz]
> Unable to build module, the following dependencies have failed:
> Class::Accessor >= 0
> Test::More >= 0.62
> Params::Validate >= 0
> Math::Calc::Units >= 0
>
> none of these dependencies are listed on the cpan manual page for
> Nagios::Plugins. I truly don't see how we can distribute a copy of
> Nagios::Plugin with the plugins and expect it to work with all these
> dependencies.
It was my call to use dependent CPAN modules, rather than trying to re-
write everything, and, so far, I stick by that decision. If we tried
to create a getopt routine with the sophistication of
Params::Validate, well, we'd end up with Params::Validate. So we
should use it instead of trying to reinvent very good wheels.
This moves it from being a programmer problem to an implementation
problem. I'm happy to spend some time on the implementation side to
get that smoother.
> Also cpan2rpm of Test::More resulted in:
>
> -- module: Test::More --
> Module not found on CPAN web site! at /usr/bin/cpan2rpm line 1201.
>
> So please tell me something is wrong with cpan2rpm and that all of
> these are optional dependencies and that basic functionality is
> available without them.
Test::More is not actually a package on CPAN. Test::More belongs to
the Test::Simple package (http://search.cpan.org/~mschwern/Test-Simple-0.74/
). Try running a cpan2rpm for Test::Simple.
In perl's dependency speak, you specify the module, not the package.
If the above works, maybe an enhancement to cpan2rpm to allow
specification of a module to then lookup the package would be useful.
Also, if the above works, then you could amend the Nagios::Plugin
tarball to specify Test::Simple as the dependency instead and see
whether this causes it to build all the dependencies correctly. If so,
then I definitely think a patch to cpan2rpm is in order.
Unfortunately, building from CPAN is still not quite as smooth as it
could be but I think it is worthwhile trying to fix this in the
general case.
Ton
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