There is a new pull request by zdykstra against master on the void-packages repository

https://github.com/zdykstra/void-packages haproxy-2.2
https://github.com/void-linux/void-packages/pull/25947

haproxy: update to 2.2.4.
Assume maintainership, enable the `prometheus-exporter` service and bump to the latest LTS (2.1 is EOL in Q1 2021)

A patch file from https://github.com/void-linux/void-packages/pull/25947.patch is attached