Reenable flex when it is found in require-dev

Author: nicolas-grekas

src/Downloader.php

@@ -43,8 +43,8 @@ public function __construct(Composer $composer, IoInterface $io, ParallelDownloa
             $this->caFile = getenv('SYMFONY_CAFILE');
         }
 
-        foreach ($composer->getPackage()->getRequires() as $link) {
-            // recipes apply only when symfony/flex is found in "require" in the root package
+        foreach (array_merge($composer->getPackage()->getRequires() ?? [], $composer->getPackage()->getDevRequires() ?? []) as $link) {
+            // recipes apply only when symfony/flex is found in "require" or "require-dev" in the root package
             if ('symfony/flex' !== $link->getTarget()) {
                 continue;
             }

src/Flex.php

@@ -546,7 +546,7 @@ public function generateFlexId()
         }
 
         if (null === $this->downloader->getEndpoint()) {
-            throw new \LogicException('Cannot generate project id when "symfony/flex" is not in the "require" section of the root composer.json.');
+            throw new \LogicException('Cannot generate project id when "symfony/flex" is not found in the root composer.json.');
         }
 
         $json = new JsonFile(Factory::getComposerFile());
@@ -560,7 +560,7 @@ public function generateFlexId()
     private function fetchRecipes(): array
     {
         if (null === $this->downloader->getEndpoint()) {
-            $this->io->writeError('<warning>Symfony recipes are disabled: "symfony/flex" is not in the "require" section of the root composer.json</warning>');
+            $this->io->writeError('<warning>Symfony recipes are disabled: "symfony/flex" not found in the root composer.json</warning>');
 
             return [[], []];
         }