this derivation will be built:
  /nix/store/bk66c8sdxsw8qyi9cb336xmxjiyj6wk8-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/bk66c8sdxsw8qyi9cb336xmxjiyj6wk8-bcachefs-module-7.0.0-31-generic.drv'...