this derivation will be built:
  /nix/store/cpgnijlfnbjhyl96sjpw39djq6yjwpa3-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/cpgnijlfnbjhyl96sjpw39djq6yjwpa3-bcachefs-module-7.0.0-38-generic.drv'...