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Re: (kudra: CPANPLUS) Re: To install a module...

by ignatz (Vicar)
on Sep 27, 2002 at 21:38 UTC ( #201355=note: print w/replies, xml ) Need Help??

in reply to (kudra: CPANPLUS) Re: To install a module...
in thread To install a module...

I noticed that not enough people are using CPANPLUS, IMNSHO. If you havn't yet, I would highly recommend giving it a test spin.

Using the testing interface and following along on the cpan-testers mailing list is a great way to learn about what goes on up there on the front lines of Perl module development. Most of the high volume posts are automated uploads and test results, but every now and then you'll see an interesting discussion between testers and module developers as they try to debug failed tests.

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Re: Re: (kudra: CPANPLUS) Re: To install a module...
by blackjudas (Pilgrim) on Oct 01, 2002 at 21:02 UTC
    I've stopped using CPAN and am trying to stay away from CPANPLUS, mainly because CPAN always seemed to D/L a horde of Modules on first setup (which wasn't too bad in itself) but it also grabbed the latest version of Perl and made you get the latest version. This had bad side effects with some of the scripts which I was running. So I use make on all of the modules I install on the production servers I setup.

    Does CPANPLUS have better dependancy handling?

      CPANPLUS should work with core Perl, although it is a lot happier if you will let it install some modules during setup, especially on machines where it might be difficult to use binaries. Certain options, such as md5 checks, require that module be installed. However, if you don't want these modules installed you can decline them during configuration (if you do want them, CPANPLUS will handle the installation before it installs itself).

      As for the normal prereq handling, CPANPLUS allows you to select whether you should always follow prereqs, never follow prereqs, or prompt for each.

      CPANPLUS will decline to install new versions of Perl. It will let you download them, if you like, but because Perl should be installed quite interactively, CPANPLUS insists you do it yourself.

      One advantage you may find to CPANPLUS--which I mention since you talk about production servers--is the programmer's interface which makes it easier to maintain modules on multiple machines. You can set up an install script to install the same modules on multiple machines (and handle known issues with modules and the like). does allow this, but by poking through the shell. By comparision CPANPLUS is a lot cleaner, since it was designed with the programmer's interface in mind (shells are just layers on top of the interface). Check out Backend for more information on the programmer's interface. It's worth noting, however, that this is version .036, and the interface changes significantly (which it may continue to do until release 1.0) in the upcoming .04 (in particular, return values become objects).

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