Gem::Resolver#no_versions_incompatibility_for

# File tmp/rubies/ruby-4.1.0-preview1/lib/rubygems/resolver.rb, line 253
def no_versions_incompatibility_for(_package, unsatisfied_term)
  cause = Gem::PubGrub::Incompatibility::NoVersions.new(unsatisfied_term)

  name = unsatisfied_term.package.to_s
  constraint = unsatisfied_term.constraint
  extended_explanation = build_extended_explanation(name, constraint)

  custom_explanation = if extended_explanation
    "#{constraint} could not be found in any repository"
  end

  Gem::Resolver::Incompatibility.new(
    [unsatisfied_term],
    cause: cause,
    custom_explanation: custom_explanation,
    extended_explanation: extended_explanation
  )
end