Initial Drupal 11 with DDEV setup

vendor/drupal/core-recipe-unpack/UnpackManager.php

@@ -0,0 +1,99 @@
+<?php
+
+namespace Drupal\Composer\Plugin\RecipeUnpack;
+
+use Composer\Composer;
+use Composer\InstalledVersions;
+use Composer\IO\IOInterface;
+use Composer\Package\PackageInterface;
+use Composer\Semver\Intervals;
+
+/**
+ * Manages the recipe unpacking process.
+ *
+ * @internal
+ */
+final readonly class UnpackManager {
+
+  /**
+   * The root composer with the root dependencies to be manipulated.
+   */
+  private RootComposer $rootComposer;
+
+  /**
+   * The unpack options.
+   */
+  public UnpackOptions $unpackOptions;
+
+  public function __construct(
+    private Composer $composer,
+    private IOInterface $io,
+  ) {
+    $this->rootComposer = new RootComposer($composer, $io);
+    $this->unpackOptions = UnpackOptions::create($composer->getPackage()->getExtra());
+  }
+
+  /**
+   * Unpacks the packages in the provided collection.
+   *
+   * @param \Drupal\Composer\Plugin\RecipeUnpack\UnpackCollection $unpackCollection
+   *   The collection of recipe packages to unpack.
+   */
+  public function unpack(UnpackCollection $unpackCollection): void {
+    if (count($unpackCollection) === 0) {
+      // Early return to avoid unnecessary work.
+      return;
+    }
+
+    foreach ($unpackCollection as $package) {
+      $unpacker = new Unpacker(
+        $package,
+        $this->composer,
+        $this->rootComposer,
+        $unpackCollection,
+        $this->unpackOptions,
+        $this->io,
+      );
+      $unpacker->unpackDependencies();
+      $this->io->write("<info>{$package->getName()}</info> unpacked.");
+    }
+
+    // Unpacking uses \Composer\Semver\Intervals::isSubsetOf() to choose between
+    // constraints.
+    Intervals::clear();
+
+    $this->rootComposer->writeFiles();
+  }
+
+  /**
+   * Determines if the provided package is present in the root composer.json.
+   *
+   * @param string $package_name
+   *   The package name to check.
+   *
+   * @return bool
+   *   TRUE if the package is present in the root composer.json, FALSE if not.
+   */
+  public function isRootDependency(string $package_name): bool {
+    $root_package = $this->composer->getPackage();
+    return isset($root_package->getRequires()[$package_name]) || isset($root_package->getDevRequires()[$package_name]);
+  }
+
+  /**
+   * Checks if a package is a dev requirement.
+   *
+   * @param \Composer\Package\PackageInterface $package
+   *   The package to check.
+   *
+   * @return bool
+   *   TRUE if the package is present in require-dev or due to a package in
+   *   require-dev, FALSE if not.
+   */
+  public static function isDevRequirement(PackageInterface $package): bool {
+    // Check if package is either a regular or dev requirement.
+    return InstalledVersions::isInstalled($package->getName()) &&
+      // Check if package is a regular requirement.
+      !InstalledVersions::isInstalled($package->getName(), FALSE);
+  }
+
+}