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.

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

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: App::vaporcalc, App::vaporcalc::FormatString

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.

Error:

• App::vaporcalc
• App::vaporcalc::Cmd::Result
• App::vaporcalc::Cmd::Subject::Flavor
• App::vaporcalc::Cmd::Subject::Help
• App::vaporcalc::Cmd::Subject::NicBase
• App::vaporcalc::Cmd::Subject::NicTarget
• App::vaporcalc::Cmd::Subject::NicType
• App::vaporcalc::Cmd::Subject::Notes
• App::vaporcalc::Cmd::Subject::Pg
• App::vaporcalc::Cmd::Subject::Recipe
• App::vaporcalc::Cmd::Subject::TargetAmount
• App::vaporcalc::Cmd::Subject::Vg
• App::vaporcalc::CmdEngine
• App::vaporcalc::Exception
• App::vaporcalc::Flavor
• App::vaporcalc::FormatString
• App::vaporcalc::Recipe
• App::vaporcalc::RecipeResultSet
• App::vaporcalc::Result
• App::vaporcalc::Role::Calc
• App::vaporcalc::Role::Store
• App::vaporcalc::Role::UI::Cmd
• App::vaporcalc::Role::UI::ParseCmd
• App::vaporcalc::Role::UI::PrepareCmd
• App::vaporcalc::Types

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

Error:

• List::Objects::WithUtils
• Moo
• Test::TypeTiny

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.