These are my keymaps.
Also see https://github.com/HugoNikanor/qmk_firmware
Keylayouts of interest:
- custom
- planck
/usr/share/X11/xkb/symbols/
setxkbmap se (custom|planck)
compose:(ralt|caps)
/usr/share/kbd/keymaps/i386/dvorak
localectl setkeymap --no-convert