[FEATURE] Prevent install-completion from failing when command is not available

When using click-completion in previous versions, if the command was not available in my path when the shell started, it wouldn’t cause an error. I have a variety of command line utilities added to various web apps that I don’t want installed globally where I’d have to update them all the time. Instead, they are available when I’m in the poetry shell for that project.

I don’t completely understand what click-completion was doing before, but it looks like it was only trying to evaluate completion when calling the command instead of at startup:

#compdef openapi-python-client
 _openapi-python-client() {
    eval $(env COMMANDLINE="${words[1,$CURRENT]}" _OPENAPI_PYTHON_CLIENT_COMPLETE=complete-zsh  openapi-python-client)
 }
 if [[ "$(basename -- ${(%):-%x})" != "_openapi-python-client" ]]; then
    compdef _openapi-python-client openapi-python-client
 fi

Whereas Typer attempts to evaluate the command immediately:

eval "$(_OPENAPI_PYTHON_CLIENT_COMPLETE=source_zsh openapi-python-client)"

Would it be possible to add some similar delayed evaluation to Typer?

[dbanty]

Hey it works! Thanks! I did have to move the generated lines up in my .zshrc for them to start working. I put it above where I’m sourcing oh-my-zsh.sh because I’ve seen that be a problem elsewhere.

[tiangolo]

Yep, it makes sense and I agree. In fact, I’m suffering with the same problem as you 😂

So yeah, I’m not sure what will be the best approach, but I will definitely update it to work for that use case. 🚀