this derivation will be built: /nix/store/pvcj28gb1nv55qqgb0r6ln6w3pn41nbv-bcachefs-module-7.0.0-39-generic.drv building '/nix/store/pvcj28gb1nv55qqgb0r6ln6w3pn41nbv-bcachefs-module-7.0.0-39-generic.drv'...