--- weight: 4 --- # Arch based You need to add our repository key ```bash wget -O repository.key https://git.tesses.org/api/packages/tesses50/arch/repository.key sudo pacman-key --add repository.key ``` Add this to your /etc/pacman.conf ``` [tesses50.git.tesses.org] SigLevel = Optional TrustAll Server = https://git.tesses.org/api/packages/tesses50/arch/core/$arch ``` or run this command which will do the same thing ```bash printf "[tesses50.git.tesses.org]\nSigLevel = Optional TrustAll\nServer = https://git.tesses.org/api/packages/tesses50/arch/core/\$arch\n" | sudo tee -a /etc/pacman.conf ``` Install crosslang ```bash sudo pacman -Sy crosslang ```