To save people some times : Barrier seems to be an app meant to control multiple devices with the same mouse and keyboard. You need to install the software on all the machines for it to works.

You can then bind a keyboard shortcut to switch device. You can also bind it if you put your mouse at the and of a screen.

Take care you all

I think Input Leap is a fork that works on Wayland

I love Barrier but need it to work with wayland.