this derivation will be built:
  /nix/store/mpbr03cv2a4zablpz8w29v52g6b88b1i-bcachefs-module-7.0.0-28-generic.drv
building '/nix/store/mpbr03cv2a4zablpz8w29v52g6b88b1i-bcachefs-module-7.0.0-28-generic.drv'...