New issue by paper42 on void-packages repository

https://github.com/void-linux/void-packages/issues/38075

Description:
`XBPS_SUCMD` is used for example for build updates with `update-sys`. Currently it's set to `sudo sh -c` in etc/defaults.conf, but we could comment it out and automatically detect common privilege escalation tools - sudo, doas, su (?).