this derivation will be built: /nix/store/7cha62fwyabwx0zwhjnp6q90h57f9bl9-bcachefs-module-7.0.0-38-generic.drv building '/nix/store/7cha62fwyabwx0zwhjnp6q90h57f9bl9-bcachefs-module-7.0.0-38-generic.drv'...