For people looking for a micro-framework for cli, the Console component provides a fluent interface to declare commands. I don't find it in the doc.

Example:

$app->register('hello')
    ->addArgument('name', InputArgument::OPTIONAL, '', 'World!')
    ->setCode(function (InputInterface $input, OutputInterface $output): int {
        $output->writeln('Hello, ' . $input->getArgument('name'));
        
        return Command::SUCCESS;
    });

This should be pointed in this section of the doc. Maybe with a dedicated page.
https://symfony.com/doc/current/components/console.html#creating-a-console-application

Existing frameworks are good at presenting this feature, but are almost unmaintained (Silly, Cylex).

(Triggered by brefphp/bref#1117)