SHELL

error: home_manuelschneid3r_Arch: key "" is unknown

key=$(curl -fsSL https://download.opensuse.org/repositories/home:manuelschneid3r/Arch/$(uname -m)/home_manuelschneid3r_Arch.key)
fingerprint=$(gpg --quiet --with-colons --import-options show-only --import --fingerprint <<< "${key}" | awk -F: '$1 == "fpr" { print $10 }')

pacman-key --init
pacman-key --add - <<< "${key}"
pacman-key --lsign-key "${fingerprint}"

pacman -Sy home_manuelschneid3r_Arch/albert