Kwalitee Issues


Make sure that the main module name and version are the same of the distribution.


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

Error: 1.0,1.000,2.049


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.


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.


  • MakeUtil


Move your *.pm files in a directory named 'lib'. The directory structure should look like 'lib/Your/' for a module named 'Your::Module'. If you need to provide additional files, e.g. for testing, that should not be considered for Kwalitee, then you should look at the 'provides' map in META.yml to limit the files scanned; or use the 'no_index' map to exclude parts of the distribution.

Error: private/


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

Error: MakeUtil


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
Compress::Zlib Interface to zlib compression library 2.049 metacpan
File::GlobMapper Extend File Glob to Allow Input and Output Files 1.000 metacpan
IO::Compress::Adapter::Bzip2 2.049 metacpan
IO::Compress::Adapter::Deflate 2.049 metacpan
IO::Compress::Adapter::Identity 2.049 metacpan
IO::Compress::Base Base Class for IO::Compress modules 2.049 metacpan
IO::Compress::Base::Common 2.049 metacpan
IO::Compress::Bzip2 Write bzip2 files/buffers 2.049 metacpan
IO::Compress::Deflate Write RFC 1950 files/buffers 2.049 metacpan
IO::Compress::Gzip Write RFC 1952 files/buffers 2.049 metacpan
IO::Compress::Gzip::Constants 2.049 metacpan
IO::Compress::RawDeflate Write RFC 1951 files/buffers 2.049 metacpan
IO::Compress::Zip Write zip files/buffers 2.049 metacpan
IO::Compress::Zip::Constants 2.049 metacpan
IO::Compress::Zlib::Constants 2.049 metacpan
IO::Compress::Zlib::Extra 2.049 metacpan
IO::Uncompress::Adapter::Bunzip2 2.049 metacpan
IO::Uncompress::Adapter::Identity 2.049 metacpan
IO::Uncompress::Adapter::Inflate 2.049 metacpan
IO::Uncompress::AnyInflate Uncompress zlib-based (zip, gzip) file/buffer 2.049 metacpan
IO::Uncompress::AnyUncompress Uncompress gzip, zip, bzip2 or lzop file/buffer 2.049 metacpan
IO::Uncompress::Base Base Class for IO::Uncompress modules 2.049 metacpan
IO::Uncompress::Bunzip2 Read bzip2 files/buffers 2.049 metacpan
IO::Uncompress::Gunzip Read RFC 1952 files/buffers 2.049 metacpan
IO::Uncompress::Inflate Read RFC 1950 files/buffers 2.049 metacpan
IO::Uncompress::RawInflate Read RFC 1951 files/buffers 2.049 metacpan
IO::Uncompress::Unzip Read zip files/buffers 2.049 metacpan
MakeUtil 1.0 metacpan


Name File View
U64 lib/IO/Compress/Base/ metacpan
Zlib::OldDeflate lib/Compress/ metacpan
Zlib::OldInflate lib/Compress/ metacpan

Other Files

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