this derivation will be built:
  /nix/store/a69my2awa98k3arv6h0bws4nwk2w65wh-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/a69my2awa98k3arv6h0bws4nwk2w65wh-bcachefs-module-7.0.0-29-generic.drv'...