Powerline requires a font installed on the client.
But we can also connect from a client where the font isn't available, and that would break the UI.

As this is a client + server configuration where we can play nice if we communicate the capacity:

Shell configuration

export POWERLINE_SUPPORTED=1

if [[ -n "$POWERLINE_SUPPORTED" ]]; then
    source ~/.config/zsh/powerline-prompt.zsh
else
    source ~/.config/zsh/fallback-prompt.zsh
fi

SSH configuration

Host *.nasqueron.org
    SendEnv POWERLINE_SUPPORTED

AcceptEnv POWERLINE_SUPPORTED

Plan

• Configure SSH server AcceptEnv POWERLINE_SUPPORTED
• Configure SSH test client with SendEnv POWERLINE_SUPPORTED
• Document on https://agora.nasqueron.org/Devserver_reference how to use powerline
• Create a sample prompt for starship
• Create a sample bar for tmux