* automatic attach tmux for all cases include existing $TMUX variable, but only if contains double slash in the contain path (that is signal about parent TMUX session - may be unstable solution)
* reassign PATH variable in shell-env bashrc include script for resolve incorrect value of that if use pct enter command in proxmox
* information marker about turned off modifier key of nested session
* install nixpkgs in multi user mode
- remove configure tmux plugin, because plugins does not exists on yadm bootstrap stage - that automatically configured via tmux started in tmux.conf