this derivation will be built:
  /nix/store/kshrm3xq7jb0p8bpax8539nzcb36ify2-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/kshrm3xq7jb0p8bpax8539nzcb36ify2-bcachefs-module-7.0.0-38-generic.drv'...