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I noticed that the /usr/local hierarchy is group-owned by the `staff' user, so another approach that I'm trying now would be like this:

  1. Make (or add) a user belonging to the `staff' group.
  2. Ensure /usr/local/{share,lib}/perl/$VERSION is group-writeable by `staff'.
  3. Set up CPAN{,PLUS} to disable installing modules as root (even via sudo)
  4. Invoke CPAN{,PLUS} as the user above to install modules.

So far so good, I have successfully installed the Titanium bundle this way, with the only stumbling being updating the Test::Simple module (which I worked around by running perl Makefile.PL INSTALLDIRS=site). I imagine this may be the case for modules shipped in the Debian perl-base and perl-modules packages.

A side effect of this is that files of the newly-installed modules will be owned by that specific user in the `staff' group, which is great if you plan to keep you CPAN{,PLUS} installations managed by a single user.

edit: this is essentially option 2 above, except there's no need to make another `local_admin' group as there's a `staff' group already (designated in Debian as the group for junior sysadmins, see Securing Debian HOWTO)

In reply to Re: What is the best way to install CPAN modules on Debian? by zakame
in thread What is the best way to install CPAN modules on Debian? by ELISHEVA

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    [LanX]: he ... we have a movement here called Anti-Germans based on this
    [Corion]: Your Mother: I think that's because (in the west) the Nazi-Germans are recognized as universally evil. Of course, you could do some number games to calculate other measures of evil than "historic losers of second world war" to come up with other evils:)
    [Corion]: I've heard "Troll" described as the new Punk, and in a way, it can be as destructive as living the Punk lifestyle, and you don't have to sit out in the cold...
    [LanX]: Anti-Germans
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    [Your Mother]: LanX++
    [Corion]: (also the "troll for trolls sake" could seen be much like the "punk for punks beer")
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