Powerlevel 9k 10k Arm64 or x86 status segments on Apple Silicon M1 (zsh, ohmyzsh)

gistfile1.txt

To customise your terminal or iTerm to identify if you are in a Rosetta or Arm64 Architecture terminal, 
add the following code in your ~/.zshrc file before the Powerlevel 10k statements.

# MacOS Architecture detection
function prompt_architecture() {
  arch_name="$(uname -m)" 
  if [ "${arch_name}" = "x86_64" ]; then
      if [ "$(sysctl -in sysctl.proc_translated)" = "1" ]; then
        p10k segment -b 7 -f 0 -t 'x86'
      else
        p10k segment -b 7 -f 0 -t 'x86'

      fi 
  elif [ "${arch_name}" = "arm64" ]; then

        p10k segment -b 7 -f 0 -i 'Arm64'
  else
    echo="?"
  fi
}
...
ZSH_THEME="powerlevel10k/powerlevel10k"
etc....

Then open ~/.p10k.zsh and locate "POWERLEVEL9K_LEFT_PROMPT_ELEMENTS" and insert the custom segment.

 # The list of segments shown on the left. Fill it with the most important segments.
  typeset -g POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(
    # =========================[ Line #1 ]=========================
    os_icon                 # os identifier
    architecture            # Arm or Rosetta?   <------- ****** add this line ********
    dir                     # current directory
    vcs                     # git status
    
Then when you launch a new terminal it will show you what the terminal is running under.
 
 You can also use unicode graphic icons if you prefer.