run_once_before-installl_zsh_prezto.sh.tmpl

#!/bin/zsh

# This shell code is zsh, it fails run as bash

# https://github.com/sorin-ionescu/prezto
function install_prezto() {
  echo "Intalling/Updating prezto if needed"

  # Install Prezo if it isn't already present
  if [[ ! -d $HOME/.zprezto/ ]]; then
    git clone --recursive https://github.com/sorin-ionescu/prezto.git "${ZDOTDIR:-$HOME}/.zprezto"

    setopt EXTENDED_GLOB

    # Skip readme and files which need further modification
    # zshrc: need custom configuration. The workaround is to add 'source "${ZDOTDIR:-$HOME}/.zprezto/init.zsh"'
    # at the beggining of the file
    # zpreztorc: we need to add the desired module in line -> zstyle ':prezto:module:prompt' theme 'powerlevel10k'
    # this module requires to load the p10k configuration from zshrc with -> [[ ! -f ~/.p10k.zsh ]] || source ~/.p10k.zsh 
    for rcfile in "${ZDOTDIR:-$HOME}"/.zprezto/runcoms/^(README.md|zshrc|zpreztorc)(.N); do
      ln -s "$rcfile" "${ZDOTDIR:-$HOME}/.${rcfile:t}"
    done

    # Installing the powerlevel9k theme
    git clone https://github.com/bhilburn/powerlevel9k.git  ~/.zprezto/modules/prompt/external/powerlevel9k

    # If we want to uninstall it, just remove the ~/.zprezto folder

    # Install powerline fonts (it requires execute chezmoi --refresh-externals apply as depends on configured external repo)
    echo "Installing powerline fonts"
    CHEZMOI_DIR=$(chezmoi source-path)
    $CHEZMOI_DIR/powerline/fonts/install.sh
  else
    echo "Prezto already installed"
    cd $HOME/.zprezto/
    git pull && git submodule update --init --recursive
  fi
}

install_prezto