module Lithic::Internal::Util

def os
  case (host = RbConfig::CONFIG["host_os"])&.downcase
  in nil
    "Unknown"
  in /linux/
    "Linux"
  in /darwin/
    "MacOS"
  in /freebsd/
    "FreeBSD"
  in /openbsd/
    "OpenBSD"
  in /mswin|mingw|cygwin|ucrt/
    "Windows"
  else
    "Other:#{host}"
  end
end