This repo is a fork to resolve the problem I was having with kmonad.
I bought a new mechanical keyboard and wanted to make some scripts and layers for it, but I found out that many keyboards and mice split the usb device into 2 or 3 different input devices under /dev/input
This fork will allow you to combine multiple keyboards into one and specify a path for the input event rather than using a randomly generated name under /dev/input/eventX where X is some number.
This allows you to be able to combine the two input devices and access it via the symlinked input event path in kmonad. This is useful so the path will stay static as to not cause problems with the kmonad config file.
Multiple mergeinputs can be ran at once either by spawning a script or modifying the service to conform to your needs.
Some of the information below is irrelevant. I might update it in the future to match the patches I made.
mergeinputs inputeventpaths
example to merge all keyboards: mergeinputs /dev/input/by-path/*-kbd
depending on your distro you might either need the input group or run mergeinputs as root.
leveraging the uinput module, mergeinputs is able to sit before any userspace input drivers:
/dev/input/eventx /dev/input/eventy -> mergeinputs grabs all key events -> "merged input" device -> input drivers -> userspace applications
this means any application will only see one keyboard (merged inputs) pressing keys, eliminating any issues multiple devices might've caused.
make install
To start the utility on every boot, a sample systemd unit is provided:
sudo cp mergeinputs.service /etc/systemd/system
sudo systemctl enable --now mergeinputs
If you want to restart mergeinputs on device changes to handle hotplugging of keyboards, use the mergeinputs-restart units:
sudo cp mergeinputs-restart.* /etc/systemd/system
sudo systemctl enable --now mergeinputs-restart.path