this derivation will be built:
  /nix/store/qr1r5krkkfhr3572q765xvgshca8vqlk-bcachefs-module-7.1.6-arch1-1.drv
building '/nix/store/qr1r5krkkfhr3572q765xvgshca8vqlk-bcachefs-module-7.1.6-arch1-1.drv'...