FC3000
解決"Import PGP key 77193F152BDBE6A6, "Arch Linux ARM Build System"問題
參考資訊：
1. solved-corrupted-gpg-conf-empty-keyring
問題：
:: Import PGP key 77193F152BDBE6A6, "Arch Linux ARM Build System <builder+xu3@archlinuxarm.org>"? [Y/n]
解法：
# ls /usr/share/pacman/keyrings/
archlinuxarm.gpg archlinuxarm-revoked archlinuxarm-trusted
# pacman-key --init
# pacman-key --populate archlinuxarm