this derivation will be built:
  /nix/store/bngxi4r7x32cf99y0gn0py1splzh0xqx-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/bngxi4r7x32cf99y0gn0py1splzh0xqx-bcachefs-module-7.0.0-38-generic.drv'...