There's a merged pull request on the void-packages repository

New package: libnma-1.8.30; network-manager-applet: update to 1.18.0 and add libappindicator support
https://github.com/void-linux/void-packages/pull/24497

Description:
This commit adds support for `nm-applet`'s `--indicator` flag, which allows the applet to run in trays that use the AppIndicator protocol.