# File lib/specinfra/command/alpine/base/package.rb, line 3
    def check_is_installed(package, version = nil)
      if version.nil? then
        pkg = escape(package)
        "apk info -qe #{pkg}"
      else
        pkg = "#{package}-#{version}"
        "apk info -v | grep -w -- '^#{Regexp.escape(pkg)}'"
      end
    end