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[markfm]

Hello,

I have recently had to rebuild a Raspberry Pi, and it would appear that a package is also needed in addition to the other pacman-key commands:

$this->bbcode_second_pass_code('', 'pacman -S archlinux-keyring')

This should resolve "Fix 'invalid or corrupted package (PGP signature)' error in Arch Linux" on new deployments.