bug: require composer 2.4+

Author: kbond

README.md

@@ -17,6 +17,8 @@ event to generate a lookup map for use at [runtime](#runtime-api).
 
 ## Installation
 
+> **Note**: This package requires composer 2.4+.
+
 1. `composer require zenstruck/class-metadata`
 2. When asked to enable the Composer plugin, choose `y` (yes).
 

composer.json

@@ -15,7 +15,7 @@
         "composer-plugin-api": "^2.0"
     },
     "require-dev": {
-        "composer/composer": "^2.0",
+        "composer/composer": "^2.4",
         "doctrine/persistence": "^1.0|^2.0|^3.0",
         "phpstan/phpstan": "^1.4",
         "phpunit/phpunit": "^9.5",
@@ -31,6 +31,9 @@
     "autoload-dev": {
         "psr-4": { "Zenstruck\\Metadata\\Tests\\": "tests/" }
     },
+    "conflict": {
+        "composer": "<2.4"
+    },
     "extra": {
         "class": "Zenstruck\\Metadata\\Composer\\Plugin"
     },