End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

Gem.platforms=

platforms=(platforms)

# File tmp/rubies/ruby-3.0.5/lib/rubygems.rb, line 670
def self.platforms=(platforms)
  @platforms = platforms
end

Set array of platforms this RubyGems supports (primarily for testing).

See also .platforms .plugindir .platform_defaults .plugin_suffix_pattern also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1