There is an inconsistency on Turkish ISO layout between Windows and MAC, on Grave and NONUS_BACKSLASH keys. For QMK, I had to overwrite and flip them with existence checking of my MAC layer, where I flip GUI and ALT keys.
This both happens on QMK and @ZMK on multiple boards. On ZMK, closest thing I found to achieve this is conditional layers, where I re-define almost every key.
I hate this approach, but couldn't find a better way😔
I hacked my mechanical keyboard and added a Trackpad. It works nicely!
Cirque Trackpad works nicely with Splinky, an open-sourced MCU with RP2040 in heart, which I built myself. The board is also open-sourced called Woodpecker. Modified by @ozkan due to my request.