[Catalyst] Where are my modules?

[will trillich]

If you did a force-install at some point in the past, e.g. to get
Catalyst::Plugin::ConfigLoader installed, then you may have skipped some
dependencies. Wiser folks than me can probably tell you how to get CPAN to
recover to a more stable state, but it sounds like you'll have to follow the
dependency chain by hand until then. That is, each "missing" module will
require you to do a "cpan Mod::Here" to get it up to snuff.

You may be doing this already, but if you use "lib::local" instead of your
system perl libraries as root (or via sudo) then A) you won't break your
system perl, 2) you won't need root permissions to update your library and
3) if the muses smile at you just right you might be able to migrate your
whole cpan library to a new system when the time comes, with a simple
file-copy.
http://perl.jonallen.info/writing/articles/install-perl-modules-without-root

Something we're running into is when Cpan module dependencies don't work out
right, after migrating a project to a new system. Instead of being up and
running in a matter of minutes (or hours if lots of compiling is needed)
it's turning into a matter of days, sometimes weeks, to get all the
dependencies straightened out. :(


On Thu, Mar 17, 2011 at 4:24 AM, Carl Franks <fireartist at gmail.com> wrote:

> On 17 March 2011 09:06, John M. Dlugosz <wxju46gefd at snkmail.com> wrote:
> > Figure this out:  perl Makefile.PL tells me I have 6 modules that need =
to
> be
> > installed.  E.g.
> >
> > - Catalyst::Plugin::ConfigLoader             ...missing.
> > - Catalyst::Plugin::Static::Simple           ...missing.
> > - Catalyst::Action::RenderView               ...missing.
> >
> > However,
> >      $ cpan -i Catalyst::Plugin::ConfigLoader
> > gives:
> >    CPAN: Storable loaded ok (v2.25)
> >    Going to read '/home/john/.cpan/Metadata'
> >      Database was generated on Wed, 16 Mar 2011 22:27:22 GMT
> >    CPAN: Module::CoreList loaded ok (v2.45)
> >    Catalyst::Plugin::ConfigLoader is up to date (0.30).
> >
> > On the other hand,
> >    $ perl -MCatalyst::Plugin::ConfigLoader
> > gives:
> >    Undefined subroutine &Data::Visitor::has called at
> > /usr/local/share/perl/5.10.1/Data/Visitor.pm line 21.
> >    Compilation failed in require at
> > /usr/local/share/perl/5.10.1/Data/Visitor/Callback.pm line 6.
> >    BEGIN failed--compilation aborted at
> > /usr/local/share/perl/5.10.1/Data/Visitor/Callback.pm line 6.
> >    Compilation failed in require at
> > /usr/local/share/perl/5.10.1/Catalyst/Plugin/ConfigLoader.pm line 8.
> >    BEGIN failed--compilation aborted at
> > /usr/local/share/perl/5.10.1/Catalyst/Plugin/ConfigLoader.pm line 8.
> >    Compilation failed in require.
> >    BEGIN failed--compilation aborted.
> >
> > 'has' method is undefined?
>
> It looks like cpan installed it, though its dependancies didn't install
> cleanly.
> Makefile.PL fails to require() it, so thinks its not installed.
> Try installing Data::Visitor - and check cpan's output for errors.
> If that still doesn't work, force install the listed modules:
>    cpan i -f Catalyst::Plugin::ConfigLoader
>
> I know in the past cpan would continue to install modules, even if
> their prereqs failed - I can't remember if this was fixed by a cpan
> upgrade or a cpan config setting.
>
> Carl
>
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-- =

The first step towards getting somewhere is to decide that you are not going
to stay where you are.  -- J.P.Morgan
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