Powerlevel9k + Google Play Music Desktop Player Custom Segment

.zshrc

zsh_gpmdp_now_playing(){
  local json_file="$HOME/.config/Google Play Music Desktop Player/json_store/playback.json"
  local is_playing=$(cat "$json_file" | jq '.playing')
  local artist=$(cat "$json_file" | jq -r '.song.artist')
  local title=$(cat "$json_file" | jq -r '.song.title')

  if [[ "$is_playing" == "true" ]]; then
    echo -n "\ufc58 $artist - $title"
  fi
}
POWERLEVEL9K_CUSTOM_NOW_PLAYING='zsh_gpmdp_now_playing'
POWERLEVEL9K_CUSTOM_NOW_PLAYING_BACKGROUND='blue'
POWERLEVEL9K_CUSTOM_NOW_PLAYING_FOREGROUND='white'

https://www.googleplaymusicdesktopplayer.com/
https://github.com/bhilburn/powerlevel9k
https://stedolan.github.io/jq/

Add to prompt elements as custom_now_playing, e.g.

POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(context dir vcs custom_now_playing)