How can I switch to non-default variant of keyboard layout on macOS?

Question

Currently I'm using Apple's Swiss German layout. I'd like to use the regular Swiss German layout but that is not available as a default input source.

The reason for this change is that characters such as {,},[,] or ~ are either extremely awkward or impossible to type with one hand.

Is this possible on macOS?

Answer 1

You can make a custom layout that does what you want with Ukelele.

Someone has already done something like this here.