composer update : Your requirements could not be resolved to an installable set of packages. (PHP 8.2 auf 8.1 downgraden)

Problem

#composer update 
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - drupal/core-recommended[9.4.0, ..., 9.5.x-dev] require laminas/laminas-feed ~2.17.0 -> satisfiable by laminas/laminas-feed[2.17.0, 2.17.x-dev].
    - drupal/core-recommended[9.4.0-alpha1, ..., 9.4.0-rc2] require laminas/laminas-feed 2.17.0 -> satisfiable by laminas/laminas-feed[2.17.0].
    - laminas/laminas-feed[2.17.0, ..., 2.17.x-dev] require php ^7.3 || ~8.0.0 || ~8.1.0 -> your php version (8.2; overridden via config.platform, actual: 8.2.1) does not satisfy that requirement.
    - Root composer.json requires drupal/core-recommended ^9.4 -> satisfiable by drupal/core-recommended[9.4.0-alpha1, ..., 9.5.x-dev].

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

 

 

Lösung:

composer config platform.php 8.1

 

composer.json sieht danach so aus:

...
    "minimum-stability": "dev",
    "prefer-stable": true,
    "config": {
        "allow-plugins": {
            "composer/installers": true,
            "cweagans/composer-patches": true,
            "drupal/core-composer-scaffold": true,
            "drupal/core-project-message": true,
            "oomphinc/composer-installers-extender": true,
            "wikimedia/composer-merge-plugin": true
        },
        "platform": {
            "php": "8.1"
        }
    }

 

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