Add allow-all for leniency to all packages

README.md

@@ -55,6 +55,16 @@ Alternatively, manually add the latest version in the module `*.info.yml` file:
 core_version_requirement: ^9.3 || ^10 || ^11
 ```
 
+## Allowing all packages
+
+If you want to allow all packages to have a lenient Drupal core version constraint, you can set `extra.drupal-lenient.allow-all` to `true`.
+
+```shell
+composer config --json extra.drupal-lenient.allow-all true
+```
+
+Using `allow-all` allows you to install any package without needing to add it to the `allowed-list`.
+
 ## Support when `composer.lock` removed
 
 This plugin must be installed globally if your project's `composer.lock` file is removed.

src/PackageRequiresAdjuster.php

@@ -34,8 +34,14 @@ public function applies(PackageInterface $package): bool
         ) {
             return false;
         }
+        /**
+         * @var array{drupal-lenient?: array{allow-all?: bool, allowed-list?: list<string>|mixed}} $extra
+         */
         $extra = $this->composer->getPackage()->getExtra();
-        // @phpstan-ignore-next-line
+        $allowAll = $extra['drupal-lenient']['allow-all'] ?? false;
+        if ($allowAll) {
+            return true;
+        }
         $allowedList = $extra['drupal-lenient']['allowed-list'] ?? [];
         if (!is_array($allowedList) || count($allowedList) === 0) {
             return false;

tests/PackageRequiresAdjusterTest.php

@@ -42,6 +42,34 @@ public function testApplies(string $name, string $type, bool $expected): void
         self::assertEquals($expected, $adjuster->applies($package));
     }
 
+    /**
+     * @covers ::__construct
+     * @covers ::applies
+     * @dataProvider provideTypes
+     */
+    public function testAppliesWithAllowsAll(string $name, string $type): void
+    {
+        $root = new RootPackage('foo', '1.0', '1.0');
+        $root->setExtra([
+            'drupal-lenient' => [
+                'allow-all' => true,
+            ]
+        ]);
+        $composer = new Composer();
+        $composer->setPackage($root);
+
+        $adjuster = new PackageRequiresAdjuster($composer);
+        $package = new Package($name, '1.0', '1.0');
+        $package->setType($type);
+
+        $expected = !(($type === 'library' || $type === 'drupal-core'));
+        self::assertEquals(
+            $expected,
+            $adjuster->applies($package),
+            "Package $name of type $type should be allowed."
+        );
+    }
+
     /**
      * @return array<int, array<int, string|bool>>
      */