I'm working on a fix for this bug here: https://salsa.debian.org/DebianOnMobile-team/sxmo-utils/-/merge_requests/2
I'm not sure I like installing Sxmo's doas.conf as /etc/doas.conf. Looking into alternatives, but it seems that Debian's doas doesn't support a doas.d/ directory, as pointed out by Jochen Sprickerhof. This patch (as submitted in the MR on salsa) is currently working for me on my pinephonepro.
