this derivation will be built:
  /nix/store/yxwxjlw3kfgbpxh2gdsb8fk88bbwnnxc-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/yxwxjlw3kfgbpxh2gdsb8fk88bbwnnxc-bcachefs-module-7.0.0-31-generic.drv'...