class RuboCop::Cop::Gemspec::RubyVersionGlobalsUsage

Checks that ‘RUBY_VERSION` constant is not used in gemspec. Using `RUBY_VERSION` is dangerous because value of the constant is determined by `rake release`. It’s possible to have dependency based on ruby version used to execute ‘rake release` and not user’s ruby version.

@example

# bad
Gem::Specification.new do |spec|
  if RUBY_VERSION >= '3.0'
    spec.add_dependency 'gem_a'
  else
    spec.add_dependency 'gem_b'
  end
end

# good
Gem::Specification.new do |spec|
  spec.add_dependency 'gem_a'
end