perl

Makefile.PL and/or Build.PL are missing. This makes installing this distribution hard for humans and impossible for automated tools like CPAN/CPANPLUS/cpanminus.

Add a Makefile.PL (for ExtUtils::MakeMaker/Module::Install) or a Build.PL (for Module::Build and its friends), or use a distribution builder such as Dist::Zilla, Dist::Milla, Minilla.

The documentation for this distribution contains syntactic errors in its POD. Note that this metric tests all .pl, .pm and .pod files, even if they are in t/. See 'pod_message' in the dist error view for more info.

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

This distribution does not 'use strict;' in all of its modules.

Add 'use strict' to all modules.

This distribution uses a module or a dist that's not listed as a prerequisite.

List all used modules in META.yml requires

This distribution has .pm files with inconsistent versions.

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

None of the package versions in this distribution matches the distribution version.

Fix the version(s).

META.yml does not conform to the Current META.yml Spec (1.4).

Take a look at the META.yml Spec at http://module-build.sourceforge.net/META-spec-current.html and change your META.yml accordingly.

This distribution does not declare the minimum perl version in META.yml.

If you are using Build.PL define the {requires}{perl} = VERSION field. If you are using MakeMaker (Makefile.PL) you should upgrade ExtUtils::MakeMaker to 6.48 and use MIN_PERL_VERSION parameter. Perl::MinimumVersion can help you determine which version of Perl your module needs.

There is more than one .pm file in the base dir, or the .pm files are not in lib/ directory.

Move your *.pm files in a directory named 'lib'. The directory structure should look like 'lib/Your/Module.pm' for a module named 'Your::Module'.

This distribution does not 'use warnings;' in all of its modules.

Add 'use warnings' to all modules. (This will require perl > 5.6)

This distribution uses a module or a dist in it's test suite that's not listed as a build prerequisite.

List all modules used in the test suite in META.yml build_requires

This distribution has at least one file larger than 200000 bytes)

No remedy for that.

This distribution does not have a list of provided modules defined in META.yml.

Add all modules contained in this distribution to the META.yml field 'provides'. Module::Build does this automatically for you.

This distribution does not have a LICENSE or LICENCE file in its root directory.

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

This distribution has a .pm file without version number. (Using Parse::PMFile to match them)

Add a version number to each .pm file.