this derivation will be built:
  /nix/store/49n5w08clysyj3y57rksvd9fa5ynazq1-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/49n5w08clysyj3y57rksvd9fa5ynazq1-bcachefs-module-7.0.0-39-generic.drv'...