From 8ccd0b800b333d97fc2a8fa78f184b16987a1a80 Mon Sep 17 00:00:00 2001
From: Dane Powell <git@danepowell.com>
Date: Tue, 21 Apr 2020 17:31:46 -0700
Subject: [PATCH 1/2] Fixes #16: Support Composer 2.

---
 composer.json  | 2 +-
 src/Plugin.php | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/composer.json b/composer.json
index 415f844..e73c394 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
         }
     ],
     "require": {
-        "composer-plugin-api": "^1.1"
+        "composer-plugin-api": "^1.1 || ^2.0"
     },
     "require-dev": {
         "composer/composer": "^1.6",
diff --git a/src/Plugin.php b/src/Plugin.php
index 51e474c..8867bfa 100644
--- a/src/Plugin.php
+++ b/src/Plugin.php
@@ -54,6 +54,14 @@ public function activate(Composer $composer, IOInterface $io)
         $composer->setRepositoryManager($manager);
     }
 
+    public function deactivate(Composer $composer, IOInterface $io)
+    {
+    }
+
+    public function uninstall(Composer $composer, IOInterface $io)
+    {
+    }
+
     /**
      * Negotiates default require constraint and package for given drupal/core.
      *

From b9d5b646539cea5865f1b79ed05ec69ab31f87a1 Mon Sep 17 00:00:00 2001
From: Jakub Piasecki <jakub@piaseccy.pl>
Date: Tue, 6 Oct 2020 15:29:41 +0200
Subject: [PATCH 2/2] Return early for Composer 2

---
 src/Plugin.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/Plugin.php b/src/Plugin.php
index 8867bfa..e60ea80 100644
--- a/src/Plugin.php
+++ b/src/Plugin.php
@@ -16,6 +16,13 @@ class Plugin implements PluginInterface
 
     public function activate(Composer $composer, IOInterface $io)
     {
+        if (version_compare('2.0.0', PluginInterface::PLUGIN_API_VERSION, '<=')) {
+            if ($io->isVerbose()) {
+                $io->write(sprintf('zaporylie/composer-drupal-optimizations is disabled for Composer 2'));
+            }
+            // Return early.
+            return;
+        }
         // Set default version constraints based on the composer requirements.
         $extra = $composer->getPackage()->getExtra();
         $packages = $composer->getPackage()->getRequires();