In atk4/core we have the following dependency in composer.json:
"symfony/yaml": "^3.4 || ^4.4 || ^5.1 || ^6.0"
In atk4/ui, we have:
"symfony/filesystem": "^4.4 || ^5.3", "symfony/http-foundation": "^4.4 || ^5.3"
And the following managed "conflicts":
"symfony/console": "<4.4.30 || >=5 <5.3.7", "symfony/css-selector": "<4.4.24 || >=5 <5.2.9", "symfony/filesystem": "<4.4.30 || >=5 <5.3.7", "symfony/http-foundation": "<4.4.30 || >=5 <5.3.7"
Currently, 5.3 is unmaintained and it's not possible to use atk4/ui within the framework.
What issues have been encountered and how can we I help the dependencies to raise at least for Symfony 6.3 like in atk4/core?