sudo pacman -Syu
:: Synchronizing package databases...
core is up to date
extra is up to date
multilib is up to date
world.db failed to download
archlinuxcn is up to date
error: failed retrieving file 'world.db' from mirror.parchlinux.ir : SSL certificate OpenSSL verify result: certificate has expired (10)
error: failed retrieving file 'world.db' from mirror.parchlinux.com : SSL certificate OpenSSL verify result: certificate has expired (10)
error: failed to synchronize all databases (failed to retrieve some files)
مشکل از میرور پارچه و موقته احتمالا
ولی دوتا پیشنهاد دارم
اول برو به /etc/pacman.conf و sigLevel = never بزار
و اگه درست نشد برو
/etc/pacman.d/parch-mirrors و هرچی https دیدی بکن http باز تست کن
مشکل ssl حل شد.