this derivation will be built:
  /nix/store/k7k63whbx4d0al7ay9fw8kyqs4cjzdan-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/k7k63whbx4d0al7ay9fw8kyqs4cjzdan-bcachefs-module-7.0.0-39-generic.drv'...