Sonataadminbundle: compatibility error with symfony 4

[fcordeiro6]

symfony/class-loader minimal version for symfony 4 is 3.4 and max version for sonata is 3.2.

Alter sonata to use max 3.4

[kunicmarko20]

Class loader was deprecated and removed in Symfony 4, shouldn’t be used anymore. This has nothing to do with Symfony 4 compatibility.

[fcordeiro6]

Thanks,

Good Morning

But composer.json of SonataAdminBundle require this componente, and composer conflite in instalation with symfony 4 website-skeleton.

How I can do?

Commands

• composer create-project symfony/website-skeleton event
• cd event
• composer require sonata-project/admin-bundle

Messages

Problem 1
- sonata-project/admin-bundle 3.38.3 requires symfony/class-loader ^2.8 || ^3.2 -> satisfiable by symfony/class-loader[3.4.x-dev] but these conflict with your requirements or minimum-stability.
- sonata-project/admin-bundle 3.38.2 requires symfony/class-loader ^2.8 || ^3.2 -> satisfiable by symfony/class-loader[3.4.x-dev] but these conflict with your requirements or minimum-stability.
- sonata-project/admin-bundle 3.38.1 requires symfony/class-loader ^2.8 || ^3.2 -> satisfiable by symfony/class-loader[3.4.x-dev] but these conflict with your requirements or minimum-stability.
- sonata-project/admin-bundle 3.38.0 requires symfony/class-loader ^2.8 || ^3.2 -> satisfiable by symfony/class-loader[3.4.x-dev] but these conflict with your requirements or minimum-stability.
- Installation request for sonata-project/admin-bundle ^3.38 -> satisfiable by sonata-project/admin-bundle[3.38.0, 3.38.1, 3.38.2, 3.38.3].

[NeuralClone]

I'm having the exact same problem. sonata-project/admin-bundle is still requiring symfony/class-loader in its composer.json file,.

This dependency causes installation to fail with Symfony 4.x. The problem can be reproduced by following the commands @fcordeiro6 used above:

composer create-project symfony/website-skeleton <some project name>
cd <some project name>
composer require sonata-project/admin-bundle

Note that this is a completely clean install of Symfony 4.x and uses the default configuration.

This also fails if you specify 4.x-dev because the master branch still lists symfony/class-loader as a dependency:

https://github.com/sonata-project/SonataAdminBundle/blob/2cdfe006dccbd3f7361cf5e85236335e7ee9d323/composer.json#L33

[NeuralClone]

A workaround to this problem seems to be to manually require symfony/class-loader:

composer require symfony/class-loader 3.4.x-dev

Not exactly a good solution since it's using deprecated code.

[kunicmarko20]

I just tested and you are correct, when did this go wrong is the question 🤔 Last week it worked.

[fcordeiro6]

In Symfony stable version 4.1.3. Until 4.1.2 no problems, last week ;).

[fcordeiro6]

NeuralClone the workaround is functional. But one correction is necessery.

[kunicmarko20]

@fcordeiro6 @NeuralClone @wmsamolet @ihateito @webeith @garak can someone test if #5217 fixes your problem.

[NeuralClone]

@kunicmarko20: It appears that #5217 fixes the problem for me. I haven't been able to reproduce this bug locally once applying the patch. Thank you for working to try to fix this so quickly!

@fcordeiro6: Good to know! Although I'm a little confused. What correction are you referring to? 3.4.x-dev is the only way to satisfy the requirements unless I'm missing something obvious.