this derivation will be built: /nix/store/xbs6zlfb9y3pzpnka2wk5bjkpjniq484-bcachefs-module-7.0.0-39-generic.drv building '/nix/store/xbs6zlfb9y3pzpnka2wk5bjkpjniq484-bcachefs-module-7.0.0-39-generic.drv'...