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

Add tests or move tests.pl to the t/ directory!

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: _Deparsed_XSubs

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:

• Algorithm::Diff::XS
• B
• B::AV
• B::BINOP
• B::BM
• B::COP
• B::CV
• B::Deparse
• B::FM
• B::GV
• B::HE
• B::HV
• B::IO
• B::IV
• B::LISTOP
• B::LOGOP
• B::LOOP
• B::MAGIC
• B::METHOP
• B::NV
• B::OP
• B::PADLIST
• B::PADNAME
• B::PADNAMELIST
• B::PADOP
• B::PMOP
• B::PV
• B::PVLV
• B::PVMG
• B::PVOP
• B::REGEXP
• B::RHE
• B::SV
• B::SVOP
• B::UNOP
• B::UNOP_AUX
• CORE::GLOBAL
• Cairo
• Cairo::Context
• Cairo::FontFace
• Cairo::FontOptions
• Cairo::Format
• Cairo::FtFontFace
• Cairo::Gradient
• Cairo::ImageSurface
• Cairo::LinearGradient
• Cairo::Matrix
• Cairo::Path
• Cairo::Path::Data
• Cairo::Path::Point
• Cairo::Path::Points
• Cairo::Pattern
• Cairo::PdfSurface
• Cairo::PsSurface
• Cairo::RadialGradient
• Cairo::RecordingSurface
• Cairo::Region
• Cairo::ScaledFont
• Cairo::SolidPattern
• Cairo::Surface
• Cairo::SurfacePattern
• Cairo::SvgSurface
• Cairo::ToyFontFace
• Carp
• Class::Load
• Class::Load::XS
• Class::MOP
• Class::MOP::Attribute
• Class::MOP::Class
• Class::MOP::Instance
• Class::MOP::Method
• Class::MOP::Method::Accessor
• Class::MOP::Method::Constructor
• Class::MOP::Method::Generated
• Class::MOP::Method::Inlined
• Class::MOP::Method::Meta
• Class::MOP::Method::Wrapped
• Class::MOP::Mixin
• Class::MOP::Mixin::AttributeCore
• Class::MOP::Mixin::HasAttributes
• Class::MOP::Mixin::HasMethods
• Class::MOP::Mixin::HasOverloads
• Class::MOP::Object
• Class::MOP::Overload
• Class::MOP::Package
• Clone
• Config
• Cpanel::JSON::XS
• Cwd
• DBD::Pg
• DBD::Pg::db
• DBD::Pg::dr
• DBD::Pg::st
• DBD::_::common
• DBD::_::db
• DBD::_::dr
• DBD::_::st
• DBD::_mem::common
• DBI
• DBI::common
• DBI::db
• DBI::dr
• DBI::st
• DBI::var
• DateTime
• Devel::OverloadInfo
• Devel::StackTrace
• DynaLoader
• Encode
• Encode::XS
• Encode::utf8
• Eval::Closure
• Exception::Class
• Exception::Class::Base
• Fcntl
• File::FcntlLock
• File::FcntlLock::Core
• File::Find
• File::Glob
• File::ShareDir
• File::Spec::Unix
• Glib
• Glib::BookmarkFile
• Glib::Boxed
• Glib::Bytes
• Glib::Child
• Glib::Error
• Glib::Flags
• Glib::IO
• Glib::Idle
• Glib::KeyFile
• Glib::Log
• Glib::MainContext
• Glib::MainLoop
• Glib::Markup
• Glib::Object
• Glib::Object::Introspection
• Glib::Object::Introspection::_FuncWrapper
• Glib::Object::_LazyLoader
• Glib::OptionContext
• Glib::OptionGroup
• Glib::Param::Char
• Glib::Param::Double
• Glib::Param::Enum
• Glib::Param::Flags
• Glib::Param::Float
• Glib::Param::GType
• Glib::Param::Int
• Glib::Param::Int64
• Glib::Param::Long
• Glib::Param::UChar
• Glib::Param::UInt
• Glib::Param::UInt64
• Glib::Param::ULong
• Glib::ParamSpec
• Glib::Source
• Glib::Timeout
• Glib::Type
• Glib::Variant
• Glib::VariantDict
• Glib::VariantType
• HTML::Entities
• HTML::Parser
• Hash::Util
• IO::File
• IO::Handle
• IO::Poll
• IO::Pty
• IO::Seekable
• IO::Socket
• IO::Tty
• Internals
• List::MoreUtils
• List::MoreUtils::XS
• List::Util
• Locale::gettext
• Moose
• Moose::Exporter
• Moose::Meta::Attribute
• Moose::Meta::Class
• Moose::Meta::Class::Immutable::Trait
• Moose::Meta::Method::Constructor
• Moose::Meta::Method::Delegation
• Moose::Meta::Method::Destructor
• Moose::Meta::Object::Trait
• Moose::Meta::Role
• Moose::Meta::Role::Application
• Moose::Meta::Role::Application::RoleSummation
• Moose::Meta::Role::Application::ToClass
• Moose::Meta::Role::Application::ToInstance
• Moose::Meta::Role::Attribute
• Moose::Meta::Role::Composite
• Moose::Meta::TypeCoercion::Union
• Moose::Meta::TypeConstraint
• Moose::Meta::TypeConstraint::DuckType
• Moose::Meta::TypeConstraint::Parameterized
• Moose::Meta::TypeConstraint::Registry
• Moose::Meta::TypeConstraint::Union
• Moose::Util
• Moose::Util::MetaRole
• Moose::Util::TypeConstraints
• Moose::Util::TypeConstraints::Builtins
• Net::DBus::Binding::Bus
• Net::DBus::Binding::C::Connection
• Net::DBus::Binding::C::Message
• Net::DBus::Binding::C::PendingCall
• Net::DBus::Binding::C::Server
• Net::DBus::Binding::C::Timeout
• Net::DBus::Binding::C::Watch
• Net::DBus::Binding::Connection
• Net::DBus::Binding::Iterator
• Net::DBus::Binding::Message
• Net::DBus::Binding::Message::Error
• Net::DBus::Binding::Message::MethodCall
• Net::DBus::Binding::Message::MethodReturn
• Net::DBus::Binding::Message::Signal
• Net::DBus::Binding::Server
• Net::SSLeay
• NetSNMP::ASN
• NetSNMP::OID
• NetSNMP::TrapReceiver
• NetSNMP::agent
• NetSNMP::agent::default_store
• NetSNMP::agent::netsnmp_request_infoPtr
• NetSNMP::default_store
• POSIX
• POSIX::SigSet
• POSIX::Termios
• Package::DeprecationManager
• Package::Stash
• Package::Stash::XS
• Params::Util
• Params::Util::PP
• Params::Validate::XS
• Params::ValidationCompiler::Compiler
• PerlIO
• PerlIO::Layer
• Regexp
• Role::Tiny
• SNMP
• SNMP::MIB::NODE
• Scalar::Util
• Socket
• Specio::Constraint::AnyCan
• Specio::Constraint::Enum
• Specio::Constraint::ObjectCan
• Specio::Constraint::ObjectIsa
• Specio::Constraint::Parameterized
• Specio::Constraint::Role::CanType
• Specio::Constraint::Role::Interface
• Specio::Constraint::Role::IsaType
• Specio::Constraint::Union
• Specio::Exception
• Specio::Helpers
• Specio::OO
• Specio::PartialDump
• Specio::TypeChecks
• Storable
• Sub::Identify
• Sub::Name
• Sub::Util
• Term::ReadKey
• Test2::API
• Test2::API::Context
• Test2::API::Instance
• Test2::Event
• Test2::Event::V2
• Test2::Hub
• Test2::Util::Facets2Legacy
• Test2::Util::HashBase
• Test::Builder
• Test::LeakTrace
• Text::CharWidth
• Text::Iconv
• Text::IconvPtr
• Tie::Hash::NamedCapture
• Tk
• Tk::Canvas
• Tk::Clipboard
• Tk::Derived
• Tk::Event
• Tk::Event::IO
• Tk::Font
• Tk::Frame
• Tk::IO
• Tk::JPEG
• Tk::Listbox
• Tk::MainWindow
• Tk::PNG
• Tk::Pixmap
• Tk::Scale
• Tk::Scrollbar
• Tk::Toplevel
• Tk::Widget
• Tk::Wm
• Tk::X
• Tk::Xrm
• Try::Tiny
• Variable::Magic
• XEvent
• XML::Parser::Expat
• XML::Twig
• XML::Twig::Elt
• XML::Twig::Entity_list
• XML::Twig::Notation_list
• XString
• attributes
• bytes
• constant
• mro
• re
• utf8
• version

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).