Sign the dist as the last step before creating the archive. Take care not to modify/regenerate dist meta files or the manifest.

Error: Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer. gpg: Signature made Tue 20 Nov 2007 02:39:05 AM JST gpg: using RSA key 770B3C4393B84C15 gpg: Can't check signature: No public key ==> BAD/TAMPERED signature detected! <==

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

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: Graph::Easy, Graph::Easy::As_ascii, Graph::Easy::As_graphml, Graph::Easy::As_graphviz, Graph::Easy::As_txt, Graph::Easy::As_vcg, Graph::Easy::Attributes, Graph::Easy::Base, Graph::Easy::Edge, Graph::Easy::Edge::Cell, Graph::Easy::Group, Graph::Easy::Group::Anon, Graph::Easy::Group::Cell, Graph::Easy::Layout, Graph::Easy::Layout::Chain, Graph::Easy::Layout::Force, Graph::Easy::Layout::Grid, Graph::Easy::Layout::Path, Graph::Easy::Layout::Repair, Graph::Easy::Layout::Scout, Graph::Easy::Node, Graph::Easy::Node::Anon, Graph::Easy::Node::Cell, Graph::Easy::Node::Empty, Graph::Easy::Parser, Graph::Easy::Parser::Graphviz, Graph::Easy::Parser::VCG

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

Error: 0.01,0.02,0.04,0.05,0.06,0.07,0.08,0.09,0.10,0.11,0.14,0.15,0.16,0.21,0.22,0.24,0.27,0.28,0.29,0.30,0.34,0.37,0.60

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).

Add SECURITY(.pod|md). See Software::Security::Policy.

Add SECURITY(.pod|md) and add a contact address. See Software::Security::Policy.

Add CONTRIBUTING(.pod|md). See https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/setting-guidelines-for-repository-contributors.