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 (8) does not match dist (71):
  • Missing in MANIFEST: .DS_Store, ._.DS_Store, ._Changes, ._MANIFEST, ._META.yml, ._Makefile.PL, ._README, ._bin, ._lib, ._t, .git/COMMIT_EDITMSG, .git/FETCH_HEAD, .git/HEAD, .git/ORIG_HEAD, .git/config, .git/index, .git/logs/HEAD, .git/logs/refs/heads/master, .git/logs/refs/remotes/origin/HEAD, .git/logs/refs/remotes/origin/master, .git/objects/03/7e7883c626a659b7f2a03c683e8246549533c3, .git/objects/0d/46210f1273930440abcc88dc2ce2f614040953, .git/objects/1c/7bd3863a10974b13fd60c947d70053cd6e9907, .git/objects/1e/bd3fda756506f20e75294efd318743d1a898a7, .git/objects/27/4ef1bf2a6a1ce8ec88e6cdd36ab056ada4dcb0, .git/objects/36/85f1979a47215508c683c52313a32c8d78a53f, .git/objects/3d/b149058dd5271a4f8a39c39947949205c2e00d, .git/objects/53/cc35275446203742de3ee63d17161b3eb5be94, .git/objects/66/0a8444f5c936bd3a1aaec340fe4e3a14a6c7f7, .git/objects/68/a3e892dc4305bb0e50c212344c9094e55bbe13, .git/objects/6b/1ebd30bb8732ceb1e6c99badef32670fc76ccd, .git/objects/6c/0187cfb3cea71dccb61f0755d57c8b2cc9ff1d, .git/objects/6d/45541e6ca79f7437bf332bc853923b44f28a79, .git/objects/78/2ff2f42ac91379783d90952416697b409450b8, .git/objects/7d/777f1bdc0afac85196ff9cdd9f5a4c4fdaeecc, .git/objects/8c/5f5df75ed2c29140e867f7d6f53643e8dff1fb, .git/objects/8c/716942d7f3ccf926dc259019fbc48523912e8b, .git/objects/8e/39582125e30194ca03439f39defd4697ef46b9, .git/objects/8f/92952ade894cb15577c5faa87b2ac3ca7bfd1d, .git/objects/c1/5b52a9922cca6cd2fc882d4873e2661eef624f, .git/objects/cb/240fcdb4889cf0b830ef316b8b96a054076404, .git/objects/d0/55f9df8f8d151091fcd12f6bb9c06e956aff88, .git/objects/d4/810ed9f34e2879ab032b375d151d1a1e78ba97, .git/objects/de/d813989dcc362fa47b4108b9f80434022b7be7, .git/objects/e7/b51c7a4c5c7e07324039da1c90cb0646698f66, .git/objects/e8/0653d2c8c3d4c557e9983de0c7700f58fdd600, .git/objects/eb/a84737ead5be89f2ec3ad09cffb46aaa1341c6, .git/objects/ec/273863d84766c0728c0076ebea634ea337c88f, .git/objects/ed/c260e22c6ad0d5d74797636583845682228ef6, .git/objects/f3/13370232e0c1863cd0710de28f0bb8f6c9c871, .git/objects/f5/2d45769f03ee06581befd3b68ad1b9129d164a, .git/objects/fa/ba5c0f9480b803fd0d108faf9b932e5b7f9723, .git/packed-refs, .git/refs/heads/master, .git/refs/remotes/origin/HEAD, .git/refs/remotes/origin/master, .gitignore, bin/, lib/._WebService, lib/WebService/._Validator, lib/WebService/Validator/._Feed, lib/WebService/Validator/Feed/, t/._WebService-Validator-Feed-W3C.t


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 '<undef>' is invalid (license) [Validation: 1.3];Missing mandatory field, 'license' (license) [Validation: 1.3]


List all used modules in META.yml requires


  • HTTP::Request::Common


Add 'use strict' (or its equivalents) to all modules, or convince us that your favorite module is well-known enough and people can easily see the modules are strictly written.

Error: WebService::Validator::Feed::._W3C


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.


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.


Define the license if you are using in Build.PL. If you are using MakeMaker (Makefile.PL) you should upgrade to ExtUtils::MakeMaker version 6.31.


Fix MANIFEST (or MANIFEST.SKIP) to exclude dot directories from a distribution. Use an appropriate tool and avoid archiving your working directory by hand. If you switch your version control system, remove old VCS directories after you migrate.

Error: .git


If you use Mac OS X, set COPYFILE_DISABLE (for OS 10.5 and better) or COPY_EXTENDED_ATTRIBUTES_DISABLE (for OS 10.4) environmental variable to true to exclude dot underscore files from a distribution.


  • ._.DS_Store
  • ._Changes
  • ._META.yml
  • ._Makefile.PL
  • ._README
  • ._bin
  • ._lib
  • ._t
  • bin/
  • lib/._WebService
  • lib/WebService/._Validator
  • lib/WebService/Validator/._Feed
  • lib/WebService/Validator/Feed/
  • t/._WebService-Validator-Feed-W3C.t


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: WebService::Validator::Feed::._W3C


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


  • Test
  • lib


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


Add all modules contained in this distribution to the META.yml field 'provides'. Module::Build or Dist::Zilla::Plugin::MetaProvides do this automatically for you.


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
WebService::Validator::Feed::W3C Interface to the W3C Feed Validation service 0.8 metacpan

Other Files

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