#3QI80A
x-hyper-keysym is a variable defined in `C source code'.
Its value is hyper
Documentation:
Which keys Emacs uses for the hyper modifier.
This should be one of the symbols `alt', `hyper', `meta', `super'.
For example, `hyper' means use the Hyper_L and Hyper_R keysyms. The
default is nil, which is the same as `hyper'.
grep -i hyper /usr/share/X11/xkb/rules/base.lst
caps:hyper Make CapsLock an additional Hyper
altwin:hyper_win Hyper is mapped to Win-keys
так что через xmodmap либо писать по аналогии правило для xkb