[Yum] a dependency is not being detected?

[Seth Vidal]

On Wed, 10 Feb 2010, Fulko Hew wrote:

> I've been perplexed by yum....
> 
> I have a package (rpm) I've created.  One if its dependencies is
> 'perl-SNMP-Session'. When I build my package the process reports
> (trimmed for brevity):
> 
> Requires: /bin/sh /usr/bin/perl bash chkconfig coreutils grep
> initscripts mysql-server perl >= 0:5.002 perl(AutoLoader)
> ...
> perl(SNMP_Session)
> ...
> 
> To install, I use: 'yum install --nogpgcheck MyPackage.rpm'
> 
> On Fedora boxes (example F12) it detects the missing dependency
> and also installs perl-SNMP-Session, but on an RHEL 5.4 box it
> doesn't report the missing dependency.
> 
> Note: The RHEL 5.4 box does have the mrtg package installed,
> and that package has a copy of the relevant files I need,
> (but the mrtg package doesn't install them into a location that Perl can find.)
> 
> # rpm -qa --filesbypkg | grep SNMP_Session
> mrtg     /usr/lib/mrtg2/SNMP_Session.pm
> 
> Using the 'verbose' flag during yum install, it says:
> 
> looking for ('perl(SNMP_Session)', None, (None, None, None)) as a requirement of MyPackage.noarch 0-1.0-5 u
> 
> but:  'yum list "*SNMP_Session*"' reports it as 'available', _not_ 'installed':
> 
> Available Packages:
> perl-SNMP_Session.noarch     1.12-3.el5.1    epl
> 
> So the question is...
> if its not installed, why isn't it being required/found as a missing dependency?
>

run:
rpm -qR mypackage.rpm

b/c I suspect the things providing perl(SNMP_Session) are different on el5 
than on f12.

-sv