How specify a specific version of module to "cpan" command?

[nimectos]

I am installing on CentOS 5.7 a list of modules via "cpan moduleA
moduleB" etc. I have done this before with the same list of
modules. Now the process is failing on XML::LibXML, apparently
due to a known problem per:

https://rt.cpan.org/Public/Bug/Display.html?id=81739

I can see that on previous successfully built units, the version
of that module was 2.0002. The one that CPAN gives me now is
2.0014.

My question is, how can I specify the desired version to the
"cpan" command? I didn't see how in "man cpan" or in the
cpan.org FAQ.

[Steffen Schwigon]

Hi!

Post by nimectos
My question is, how can I specify the desired version to the
"cpan" command? I didn't see how in "man cpan" or in the
cpan.org FAQ.

You could give the last part of the download link consisting of the
AUTHOR name and the versioned filename:

cpan SHLOMIF/XML-LibXML-2.0002.tar.gz

Admittedly you need to find out this name in advance on (meta)cpan.org
because the author might be different per version.

Kind regards,
Steffen

[nimectos]

Post by Steffen Schwigon
Hi!

Post by nimectos
My question is, how can I specify the desired version to the
"cpan" command? I didn't see how in "man cpan" or in the
cpan.org FAQ.

You could give the last part of the download link consisting of the
cpan SHLOMIF/XML-LibXML-2.0002.tar.gz
Admittedly you need to find out this name in advance on (meta)cpan.org
because the author might be different per version.

Thank you very much, that got me past the problem - it turned out that
there were a few other modules I had to treat similarly.

Is there some other method - a way to tell the cpan command "I know that
your downloaded module lists will show newer versions, but pretend that
these versions are the latest for these modules"? I like to feed the same
long module list to cpan a second time and see that everything is already
installed properly but that doesn't work with the method above, it always
installs it again even if already installed.