this derivation will be built:
  /nix/store/61fq4a6xsk8jm2a5k3fnj3x2gxb8k853-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/61fq4a6xsk8jm2a5k3fnj3x2gxb8k853-bcachefs-module-7.0.0-30-generic.drv'...