Symfony's Configurator functions env() and param() not found

[ThomasLandauer]

I'm getting:

ERROR: UndefinedFunction - config/packages/mailer.php:12:54 - Function Symfony\Component\DependencyInjection\Loader\Configurator\env does not exist (see https://psalm.dev/021)

ERROR: UndefinedFunction - config/packages/monolog.php:38:16 - Function Symfony\Component\DependencyInjection\Loader\Configurator\param does not exist (see https://psalm.dev/021)

even though I have this in the config files:

use function Symfony\Component\DependencyInjection\Loader\Configurator\env;
use function Symfony\Component\DependencyInjection\Loader\Configurator\param;

The file from Symfony is looking like this:

<?php

namespace Symfony\Component\DependencyInjection\Loader\Configurator;

class ContainerConfigurator extends AbstractConfigurator
{
    // ...
}

function param(string $name): ParamConfigurator
{
    // ...
}

function env(string $name): EnvConfigurator
{
    // ...
}

There was a similar issue in PHPStan, and the answer was that this doesn't comply to PSR-4: phpstan/phpstan#5189 (comment)

Is there a solution or a workaround?

[weirdan]

Are these functions supposed to be globally available?

[ThomasLandauer]

Well, at least in Symfony's config files, see e.g. https://symfony.com/doc/current/configuration.html#configuration-based-on-environment-variables

'url' => env('DATABASE_URL')->resolve(),

[weirdan]

Then I believe the easiest workaround is to add that file as a stub in psalm.xml:

<stubs>
   <file name="vendor/symfony/....">
</stubs>

[ThomasLandauer]

Thanks - works - I added it to README, since (sooner or later) most Symfony users will need it: #297