Gem::Specification#required_ruby_version=

required_ruby_version=(req)

lib/rubygems/specification.rb View on GitHub ↗

# File tmp/rubies/ruby-3.4.1/lib/rubygems/specification.rb, line 664
def required_ruby_version=(req)
  @required_ruby_version = Gem::Requirement.create req

  @required_ruby_version.requirements.map! do |op, v|
    if v >= LATEST_RUBY_WITHOUT_PATCH_VERSIONS && v.release.segments.size == 4
      [op == "~>" ? "=" : op, Gem::Version.new(v.segments.tap {|s| s.delete_at(3) }.join("."))]
    else
      [op, v]
    end
  end
end

The version of Ruby required by this gem. The ruby version can be specified to the patch-level:

$ ruby -v -e 'p Gem.ruby_version'
ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin12.4.0]
#<Gem::Version "2.0.0.247">

Prereleases can also be specified.

Usage:

Example

# This gem will work with 1.8.6 or greater...
spec.required_ruby_version = '>= 1.8.6'

# Only with final releases of major version 2 where minor version is at least 3
spec.required_ruby_version = '~> 2.3'

# Only prereleases or final releases after 2.6.0.preview2
spec.required_ruby_version = '> 2.6.0.preview2'

# This gem will work with 2.3.0 or greater, including major version 3, but lesser than 4.0.0
spec.required_ruby_version = '>= 2.3', '< 4'

See also #required_rubygems_version= #requirements #removed_method_calls #requirements= also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0

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