How do I create a per user xkb keymap?

It is possible to create your own custom xkb maps by adding files to /usr/share/X11/xkb/symbols. However, this directory is managed my dpkg and requires root access. Is there a way of placing a keymap under somewhere $HOME where setxkbmap file find it? Question closed on SO as not about programming: https://stackoverflow.com/questions/79204214/how-do-i-create-a-per-user-xkb-keymap