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Insufficient permissions!

g-cpan から

 * Getting CPAN Info for Catalyst::View::TT
*Going to read '/var/tmp/g-cpan/.cpan/Metadata'
  Database was generated on Tue, 17 Apr 2012 12:27:03 GMT
 * Scanning /usr/portage for Catalyst-View-TT
|Checksum for /var/tmp/g-cpan/.cpan/sources/authors/id/B/BO/BOBTFISH/Catalyst-View-TT-0.39.tar.gz ok
        *- Unsatisfied dependencies detected during ----
        *-   BOBTFISH/Catalyst-View-TT-0.39.tar.gz  ----
    ExtUtils::MakeMaker [build_requires]
  Ignoring dependencies on modules ARRAY(0xd6a9450), ARRAY(0xd2aff28)
  [configure_requires] -- NOT OK
Insufficient permissions! at /usr/lib/perl5/vendor_perl/5.12.4/Gentoo/CPAN.pm line 186.
 * Cleaning temporary space

とか文句言われたら、cpan ExtUtils::MakeMaker すると直るかも。