TMUX_CONF_FILE takes precendace over $HOME/.tmux.conf or XDG_CONFIG_HOME/tmux/tmux.conf which allows internal tpm scripts to properly parse user_config
E.g in your tmux.conf.local which is sourced by tmux.conf add set-environment -g "TMUX_CONF_FILE" "/path/to/tmux.conf.local"
In essence this is similar as PR: #163, but it must be faster as we are not calling tmux and relay on _tmux_conf_contents
TMUX_CONF_FILE takes precendace over $HOME/.tmux.conf or XDG_CONFIG_HOME/tmux/tmux.conf which allows internal tpm scripts to properly parse user_config
E.g in your tmux.conf.local which is sourced by tmux.conf add set-environment -g "TMUX_CONF_FILE" "/path/to/tmux.conf.local"
In essence this is similar as PR: #163, but it must be faster as we are not calling tmux and relay on _tmux_conf_contents