diff -up ./vendor/composer/composer/src/Composer/Factory.php.noxdg ./vendor/composer/composer/src/Composer/Factory.php
--- ./vendor/composer/composer/src/Composer/Factory.php.noxdg	2024-04-20 12:34:54.442117723 +0200
+++ ./vendor/composer/composer/src/Composer/Factory.php	2024-04-20 12:35:39.497640757 +0200
@@ -702,6 +702,10 @@ class Factory
 
     private static function useXdg(): bool
     {
+        // As XDG is very partially implemented
+        // resulting in command/code in ~/.config
+        return false;
+
         foreach (array_keys($_SERVER) as $key) {
             if (strpos((string) $key, 'XDG_') === 0) {
                 return true;