[sf-perl] How to make Module::Install follow dependencies, with caveats
quinn at pgexperts.com
Wed Nov 4 22:32:51 PST 2009
Oh, that magic environment setting I mentioned at the meeting is
PERL_MM_USE_DEFAULT. Thanks to David Wheeler for hipping me to this.
Background: Some Perl modules don't respect the cpan shell's
or build_requires_install_policy. Instead, they always prompt you
dependencies. This is a real pain if you want to install a bunch of
modules at once.
It seems this behavior exists in modules that use Module::Install to
build and install
themselves, but not in modules that use Extutils::MakeMaker or
(The latter two may prompt you for other things, though.)
Anyway, if you set PERL_MM_USE_DEFAULT=1, then cpan will assume the
For Module::Install–based modules, the default is y ("yes, follow
This fixes the dependency nags. But...
Be warned you'll also get the default answer to *any* question a
(as long as it asks the question using ExtUtils::MakeMaker::prompt
()). This might
not be what you wanted.
I decided it was worth it on my development system; YMMV.
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