this derivation will be built: /nix/store/klv6cg471iclqbca70k4ir392vhcyy3c-bcachefs-module-7.0.0-38-generic.drv building '/nix/store/klv6cg471iclqbca70k4ir392vhcyy3c-bcachefs-module-7.0.0-38-generic.drv'...