post_install() {
  echo ">>> To activate gitstatus in Bash, add the following line to .bashrc:"
  echo ">>>   source /usr/share/gitstatus/gitstatus.prompt.sh"
  echo ">>> To activate gitstatus in Zsh, add the following line to .zshrc:"
  echo ">>>   source /usr/share/gitstatus/gitstatus.prompt.zsh"
} 

post_upgrade() {
  post_install
}