Is there a reason Laravel doesn't provide psr/container-implementation?

[AegirLeet]

As the title says, is there a specific reason neither illuminate/container nor laravel/framework provide psr/container-implementation in their composer.json, or is this just an oversight?

PSR-11 says:

Packages providing a PSR container implementation should declare that they provide psr/container-implementation 1.0.0.

Projects requiring an implementation should require psr/container-implementation 1.0.0.

Since the container already implements PSR-11, adding this seems like no-brainer to me.

[julienbourdeau]

Projects requiring an implementation should require psr/container-implementation 1.0.0.

Laravel need illuminate/container, not any container implementation.

Requiring psr/container-implementation is for package which need any PSR-11 container. This is usually for packages for instance.

[AegirLeet]

Laravel need illuminate/container, not any container implementation.

I'm talking about the other part of that quote. Laravel should provide psr/container-implementation, not require it.