this derivation will be built:
  /nix/store/9107m6sq47r0gi8hk3lpbazfc9a60zx9-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/9107m6sq47r0gi8hk3lpbazfc9a60zx9-bcachefs-module-7.0.0-34-generic.drv'...