nr.powerline

Simple powerline implementation, only tested in Bash. It is recommended that you use a font from NerdFonts in order to have proper support for special characters (like the right triangle).

Simple Setup

$ pipx install nr.powerline
$ PS1='`nr powerline` '

The above get's you started quickly, but you will notice a delay in rendering the powerline. This is mostly because of the overhead of kickstarting the Python process. To improve performance, Powerline can be started in the background and communicated with over a Unix socket.

function _powerline_get() {
  echo "$PWD" | nc -U ~/.local/powerline/daemon.sock 2>/dev/null
  return $?
}
function _powerline() {
  _powerline_get
  if [ $? != 0 ]; then
    if which nr-powerline >/dev/null; then
      nr-powerline --start
      if ! ( nr-powerline --status --exit-code >/dev/null ); then
        echo "Could not start powerline daemon."
      else
        _powerline_get
      fi
    else
      printf "$HOSTNAME $PWD $ "
    fi
  fi
}
export PS1='`_powerline`'

Roadmap

• Daemon to run in the background to speed up powerline rendering.
• Pass previous status code into nr-powerline command.
• Breadcrumb working directory
• Truecolor and xterm-256 color support

Plugins

The entry point for powerline plugins is nr.powerline.plugins. Entry points must inherit from the nr.powerline.plugins.Plugin class.

Configuration

The powerline can be configured with environment variables.

Check the default configuration in src/nr/powerline/main.py for an example script.

Copyright © 2020 Niklas Rosenstein