In Sierra there's a handy option added to be able to switch, e.g. between Russian-PC and ABC (or U.S. International - PC) input sources.
Previously I've been using some hacks for that (using third-party soft to remap CapsLock to F19 and then using it for switching between input sources in Shortcuts setting. This way I lost ability to CapsLock at all), now I love it.
Except that I don't. Neither one of two given Ukrainian layouts is usable because they both have remapped keys (compared to all other keyboards in the world). No worry - we can edit layout using Ukelele app or find an edited one on the internet.
Does anyone know a way (if at all possible) to customize keyboard layout (using Ukelele or whatever it takes) so that it is acceptable by OS for switching between languages with CapsLock?
P. S.: my OS version is 10.13.6