How do I tell CPAN to install all dependencies?
I tried setting these in cpan:
cpan> o conf prerequisites_policy follow
cpan> o conf commit
I still had to answer "y" a couple of times (but fewer than before it feels like).
Is there a way to get it to always go ahead and install? I want to make it unattended.
It would seem that I want a flag to always trust CPAN to do the right thing, and if it suggests an answer I would like to follow it (always hit Enter when it asks something).
Try setting PERL_MM_USE_DEFAULT like so:
PERL_MM_USE_DEFAULT=1 perl -MCPAN -e 'install My::Module'
It should make CPAN answer the default to all prompts.
Changing the following parameter on top of prerequisites_policy follows.
cpan> o conf prerequisites_policy 'follow'
cpan> o conf build_requires_install_policy yes
cpan> o conf commit
This will change it from "ask/yes" to "yes" and stop it asking you.
Here's what I'm pretty sure you're looking for:
cpan> o conf prerequisites_policy follow
cpan> o conf commit
Maybe it's related to ExtUtils::AutoInstall or Module::AutoInstall being used. Try setting the PERL_AUTOINSTALL environment variable. (Cf. the documentation of those modules.)
Personally I have only tried a couple of times to modify the settings in that way and have actually found it easier to drop into the CPAN.pm shell by giving cpan no arguments, then configuring CPAN.pm from the interactive prompt:
$ cpan
cpan> o conf init
This will initiate the CPAN.pm interfaces configuration utility. Simply run through it and specify "follow" where you need to (I forget the question offhand), and you should be good to go.