Ensure custom path plugin runs early

composer.json

@@ -34,7 +34,8 @@
         "class": [
             "Composer\\CustomDirectoryInstaller\\LibraryPlugin",
             "Composer\\CustomDirectoryInstaller\\PearPlugin",
-            "Composer\\CustomDirectoryInstaller\\PluginPlugin"
+            "Composer\\CustomDirectoryInstaller\\PluginPlugin",
+            "Composer\\CustomDirectoryInstaller\\LifecyclePlugin"
         ],
         "branch-alias": {
             "dev-master": "2.0.x-dev"

src/Composer/CustomDirectoryInstaller/LifecyclePlugin.php

@@ -0,0 +1,95 @@
+<?php
+
+namespace Composer\CustomDirectoryInstaller;
+
+use Composer\Composer;
+use Composer\IO\IOInterface;
+use Composer\Plugin\PluginInterface;
+use Composer\EventDispatcher\EventSubscriberInterface;
+use Composer\Installer\PackageEvents;
+use Composer\Installer\PackageEvent;
+use Composer\Script\ScriptEvents;
+use Composer\Script\Event;
+
+class LifecyclePlugin implements PluginInterface, EventSubscriberInterface
+{
+    private Composer $composer;
+
+    public function activate(Composer $composer, IOInterface $io)
+    {
+        $this->composer = $composer;
+    }
+
+    public function deactivate(Composer $composer, IOInterface $io)
+    {
+    }
+
+    public function uninstall(Composer $composer, IOInterface $io)
+    {
+    }
+
+    public static function getSubscribedEvents()
+    {
+        return [
+            PackageEvents::PRE_PACKAGE_INSTALL => 'reorderInstallers',
+            PackageEvents::PRE_PACKAGE_UPDATE => 'reorderInstallers',
+            ScriptEvents::POST_AUTOLOAD_DUMP   => 'cleanupVendor',
+        ];
+    }
+
+    public function reorderInstallers(PackageEvent $event)
+    {
+        $installationManager = $this->composer->getInstallationManager();
+
+        $ref = new \ReflectionProperty($installationManager, 'installers');
+        $ref->setAccessible(true);
+        $installers = $ref->getValue($installationManager);
+
+        $reordered = [];
+        foreach ($installers as $installer) {
+            if ($installer instanceof LibraryInstaller || $installer instanceof PluginInstaller || $installer instanceof PearInstaller) {
+                array_unshift($reordered, $installer);
+            } else {
+                $reordered[] = $installer;
+            }
+        }
+        $ref->setValue($installationManager, $reordered);
+    }
+
+    public function cleanupVendor(Event $event)
+    {
+        $extra = $this->composer->getPackage()->getExtra();
+        if (empty($extra['installer-paths'])) {
+            return;
+        }
+
+        $vendorDir = $this->composer->getConfig()->get('vendor-dir');
+        foreach ($extra['installer-paths'] as $path => $packages) {
+            foreach ($packages as $package) {
+                $vendorPath = $vendorDir . '/' . $package;
+                if (is_dir($vendorPath)) {
+                    $this->removeDirectory($vendorPath);
+                }
+            }
+        }
+    }
+
+    private function removeDirectory(string $dir): void
+    {
+        if (!is_dir($dir)) {
+            return;
+        }
+        $items = new \RecursiveIteratorIterator(
+            new \RecursiveDirectoryIterator($dir, \FilesystemIterator::SKIP_DOTS),
+            \RecursiveIteratorIterator::CHILD_FIRST
+        );
+        foreach ($items as $item) {
+            if ($item->isDir()) {
+                rmdir($item->getPathname());
+            } else {
+                unlink($item->getPathname());
+            }
+        }
+        rmdir($dir);
+    }
+}

tests/Unit/LifecyclePluginTest.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Tests\Unit;
+
+use Composer\CustomDirectoryInstaller\LifecyclePlugin;
+use Composer\Installer\PackageEvents;
+use Composer\Script\ScriptEvents;
+use PHPUnit\Framework\TestCase;
+
+class LifecyclePluginTest extends TestCase
+{
+    public function testSubscribedEvents()
+    {
+        $events = LifecyclePlugin::getSubscribedEvents();
+
+        $this->assertArrayHasKey(PackageEvents::PRE_PACKAGE_INSTALL, $events);
+        $this->assertArrayHasKey(PackageEvents::PRE_PACKAGE_UPDATE, $events);
+        $this->assertArrayHasKey(ScriptEvents::POST_AUTOLOAD_DUMP, $events);
+    }
+}