Upgrade project to Symfony 6.4, with Symfony Flex

[tchapuis]

Hello and thank you for your project.

At my work, we installed it and we are using it very intensively. We had no problems so far but I wanted to update it.

Here I am with this very long update to Symfony 6.4. There is a couple of important things to note :

• I had to drop the support for PHP 8.1 because composer/satis on branch dev-main require symfony/console to version 7.1, which is not compatible with PHP 8.1
• I moved everything out of the bundle folder structure to the Symfony Flex app folder structure. I kept the Playboom namespace.
• I tried to not touch any logic but making tests work again was a pain

Feel free to ask any questions regarding this PR 😃

[ramunasd]

Thanks a lot! I will review and let you know if something is missing.
BTW, have you tested it somewhere?

[tchapuis]

I tested it on my local machine, with both sample data from the project and real composer package, e.g. symfony/console. Everything seems to work correctly.

I had problems testing it on Docker but maybe my setup is not right.

[ramunasd]

Seems there is one issue with satis template and recent twig version

Deprecation Notice: Since twig/twig 3.12: Character "D" should not be escaped; the "\" character is ignored in Twig 3 but will not be in Twig 4. Please remove the extra "\" character at position 2 in "index.html.twig" at line 36. in /var/www/html/vendor/symfony/deprecation-contracts/function.php:25

I could not successfully build cache using web console, while CLI tool did the job.

[ramunasd]

Since configuration files are changed, existing setups won't be able upgrade without additional efforts. This PR is introducing breaking changes, which means we can release it as next major version and we need upgrade notes 🤔

[tchapuis]

Since configuration files are changed, existing setups won't be able upgrade without additional efforts. This PR is introducing breaking changes, which means we can release it as next major version and we need upgrade notes 🤔

Parameters and .env are untouched by this PR but any other custom configuration will impact people for sure.

[tchapuis]

Seems there is one issue with satis template and recent twig version

Deprecation Notice: Since twig/twig 3.12: Character "D" should not be escaped; the "\" character is ignored in Twig 3 but will not be in Twig 4. Please remove the extra "\" character at position 2 in "index.html.twig" at line 36. in /var/www/html/vendor/symfony/deprecation-contracts/function.php:25

I could not successfully build cache using web console, while CLI tool did the job.

This is a problem with the satis template, so I opened a PR on this project : composer/satis#947

[ramunasd]

seems fix is already landed and this PR can be updated