.tmux.conf

set -g default-terminal "tmux-256color"
set -g mouse on
set -g focus-events on
set -g status-position top 
set -g prefix C-a
setw -g mode-keys vi
set -sg escape-time 0
set -sa terminal-features ',xterm-kitty:RGB'

kitty.conf

# ~/.config/kitty/kitty.conf
# clipboard_control write-clipboard write-primary no-append
# include ./theme.conf

enable_audio_bell no
font_family MesloLGS NF

enabled_layouts tall:bias=70, fat:bias=70, stack, horizontal, vertical, grid

map kitty_mod+1 goto_layout tall
map kitty_mod+2 goto_layout fat
map kitty_mod+3 goto_layout horizontal
map kitty_mod+4 goto_layout vertical
map kitty_mod+5 goto_layout stack
map kitty_mod+6 goto_layout grid

map kitty_mod+enter new_window_with_cwd
# map cmd+enter new_window_with_cwd

map ctrl+c kitten pass_keys.py copy ctrl+c
# map cmd+c kitten pass_keys.py copy cmd+c

map ctrl+v kitten pass_keys.py paste ctrl+v
# map cmd+b kitten pass_keys.py paste cmd+v

# https://github.com/knubie/vim-kitty-navigator
map ctrl+j kitten pass_keys.py bottom ctrl+j
map ctrl+k kitten pass_keys.py top    ctrl+k
map ctrl+h kitten pass_keys.py left   ctrl+h
map ctrl+l kitten pass_keys.py right  ctrl+l

allow_remote_control yes
listen_on unix:@mykitty
# listen_on unix:/tmp/mykitty

pass_keys.py

# ~/.config/kitty/pass_keys.py
import re

from kittens.tui.handler import result_handler
from kitty.key_encoding import KeyEvent, parse_shortcut


def is_window_vim(window, vim_id):
    fp = window.child.foreground_processes
    return any(re.search(vim_id, p['cmdline'][0] if len(p['cmdline']) else '', re.I) for p in fp)


def encode_key_mapping(window, key_mapping):
    mods, key = parse_shortcut(key_mapping)
    event = KeyEvent(
        mods=mods,
        key=key,
        shift=bool(mods & 1),
        alt=bool(mods & 2),
        ctrl=bool(mods & 4),
        super=bool(mods & 8),
        hyper=bool(mods & 16),
        meta=bool(mods & 32),
    ).as_window_system_event()

    return window.encoded_key(event)


def main():
    pass


@result_handler(no_ui=True)
def handle_result(args, result, target_window_id, boss):
    cmd = args[1] # bottom, top, left, right, copy, paste
    key_mapping = args[2] # ctrl+j, ctrl+k, ctrl+h, ctrl+l, ctrl+c, ctrl+v
    vim_id = args[3] if len(args) > 3 else "n?vim"

    window = boss.window_id_map.get(target_window_id)

    if window is None:
        return
    if is_window_vim(window, vim_id):
        for keymap in key_mapping.split(">"):
            encoded = encode_key_mapping(window, keymap)
            window.write_to_child(encoded)
    elif cmd == "copy":
        window.copy_and_clear_or_interrupt()
    elif cmd == "paste":
        window.paste_selection_or_clipboard()
    else:
        boss.active_tab.neighboring_window(cmd)