Version 22.3.20221211131110 of package Xah-Fly-Keys has just been released in NonGNU ELPA. You can now find it in M-x list-packages RET.
Xah-Fly-Keys describes itself as: ====================================== ergonomic modal keybinding minor mode. ====================================== More at https://elpa.nongnu.org/nongnu/xah-fly-keys.html ## Summary: xah-fly-keys is a efficient keybinding for emacs. It is modal like vi, but key choices are based on statistics of command call frequency. HOW TO USE M-x xah-fly-keys to toggle the mode on/off. Important command/insert mode switch keys: xah-fly-command-mode-activate (press <home> or F8 or Alt+Space or Ctrl+Space or menu key) xah-fly-insert-mode-activate (when in command mode, press qwerty letter key f.) When in command mode: "f" calls `xah-fly-insert-mode-activate'. Space is a leader key. For example, "SPC r" calls `query-replace'. Press "SPC C-h" to see the full list. "SPC SPC" also activates insertion mode. "SPC RET" calls `execute-extended-command'. "a" calls `execute-extended-command'. The leader key sequence basically supplant ALL emacs commands that starts with C-x key. ## Recent NEWS: [Not available 🙁]