this derivation will be built:
  /nix/store/2gr1vddb7iz5yp2qx8knpprm7h6ab01a-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/2gr1vddb7iz5yp2qx8knpprm7h6ab01a-bcachefs-module-7.0.0-38-generic.drv'...