Compiling firefox from source

[jonathon]

Could be:

https://wiki.archlinux.org/index.php/Arch_User_Repository#Acquire_a_PGP_public_key_if_needed

or:

[FAQ] Issues with “signature is marginal trust”, "signature is unknown trust", or “invalid or corrupted package”

If you’re getting an error similar to “Can’t update: signature from *** is marginal trust” or “invalid or corrupted package” you probably just need to update your package signing keys: sudo pacman -Sy archlinux-keyring endeavouros-keyring sudo pacman -Syu Also make sure your system clock is correct! Of course, it’s also possible that the package file actually is corrupt. Remove it from /var/cache/pacman/pkg/ so pacman will download it again. If no package file is explicitly mentioned then yo…

depending on the error you’re getting.