11:41 <nmeum> hi! I have a mouse with forward/backward buttons on the side (e.g. for navigation in firefox). Unfourtunately, this buttons are not mapped correctly and need to be remapped. On Xorg, I used `Option "ButtonMapping"` in a `Section "InputClass"` within my /etc/X11/xorg.conf.d to achieve that, e.g. `Option "ButtonMapping" "1 2 3 4 5 6 7 8 2 9"`. How would I do the same with river?

22:19 <ifreund> nmeum: hmm, I don't think there's any good way to do that yet. Libinput doesn't seem to support any solution upstream so it's left to the compositor to provide some kind of config option to fix that I guess

22:20 <ifreund> you're the first person to ask for it tbh, though I assume someone else will have hardware that needs it eventually. Feel free to open an issue

22:23 <ifreund> If you don't mind editing river's code, you could probably hack something without too much effort to tide you over until river has a proper way to configure this, grep for pointerNotifyButton and check if the event code is the incorrectly mapped one and replace it with the correct one at the callsites

22:24 <ifreund> it's probably possible to fix at the evdev layer before river even gets the events as well, there are some remapping utilities out there for that purpose though most are keyboard-focused iirc

22:32 <adamcstephens> I actually looked into this recently since I got a new trackball. You can remap the mouse buttons using udev. Here’s an example that also links a couple other resources. https://gist.github.com/gowizzard/e045226b64c6b28a0700a36f350a7587

22:40 <ifreund> ah, neat!