rubygems_plugin.rb

module ReshimInstaller
  def install(options)
    super
    # We don't know which gems were installed, so always reshim.
    `asdf reshim ruby`
  end
end

if defined?(Bundler::Installer)
  Bundler::Installer.prepend ReshimInstaller
else
  Gem.post_install do |installer|
    # Reshim any (potentially) new executables.
    installer.spec.executables.each do |executable|
      `asdf reshim ruby #{RUBY_VERSION} bin/#{executable}`
    end
  end
  Gem.post_uninstall do |installer|
    # Unfortunately, reshimming just the removed executables or
    # ruby version doesn't work as of 2020/04/23.
    `asdf reshim ruby` if installer.spec.executables.any?
  end
end