I figure I should post the tool I made to help me produce my layout.
This as it stands, is for people who directly intend to insert the keycodes into a symbols file. Sorry, no fancy installer.
How to use:
1. File - Make a copy
2. On Template, fill out up to 8 levels.
3. Goto XKB Sheet, Copy
sudo vim /usr/share/X11/xkb/symbols/us
(After you backup the file!)
5. I just replace my colemak keycodes. Hacky, but works for me (Except when it doesnt, which is why I have a backup file.)
Yeah it needs some work. Give me a bit.