Kwalitee Issues


Add a section called "LICENSE" to the documentation, or add a file named LICENSE to the distribution.


Add =head1 LICENSE and the text of the license to the main module in your code.


Run a proper command ("make manifest" or "./Build manifest", maybe with a force option), or use a distribution builder to generate the MANIFEST. Or update MANIFEST manually.


  • MANIFEST (46) does not match dist (45):
  • Duplicates in MANIFEST: SIGNATURE


Take a look at the META.yml Spec at (for version 1.4) or (for version 2), and change your META.yml accordingly.

Error: License 'CC0' is invalid (license) [Validation: 1.4]


Remove the POD errors. You can check for POD errors automatically by including Test::Pod to your test suite.

Error: Acme-Hello-0.04/lib/Acme/Hello/ -- Around line 68: Non-ASCII character seen before =encoding in '唐鳳'. Assuming UTF-8 Acme-Hello-0.04/lib/Acme/ -- Around line 65: Non-ASCII character seen before =encoding in '唐鳳'. Assuming UTF-8


Split the distribution, or fix the version numbers to make them consistent (use the highest version number to avoid version downgrade).

Error: 0.03,0.04


Add =head1 LICENSE and/or the proper text of the well-known license to the main module in your code.


Add a META.json to the distribution. Your buildtool should be able to autogenerate it.


Ask the owner of the distribution (the one who released it first, or the one who is designated in x_authority) to give you a (co-)maintainer's permission.


  • Acme::Hello
  • Acme::Hello::I18N


Add 'use warnings' (or its equivalents) to all modules (this will require perl > 5.6), or convince us that your favorite module is well-known enough and people can easily see the modules warn when something bad happens.

Error: Acme::Hello, Acme::Hello::I18N


This is not a critical issue. Currently mainly informative for the CPANTS authors. It might be removed later.


Add a 'repository' resource to the META.yml via 'meta_add' accessor (for Module::Build) or META_ADD parameter (for ExtUtils::MakeMaker).


Name Abstract Version View
Acme::Hello Print a greeting message 0.04 metacpan
Acme::Hello::I18N Localized messages for Acme::Hello 0.03 metacpan

Other Files

Build.PL metacpan
Changes metacpan
MANIFEST metacpan
META.yml metacpan
Makefile.PL metacpan
README metacpan