Add missing symfony aliases

Author: nicolas-grekas

src/GenerateFlexEndpointCommand.php

@@ -40,6 +40,18 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
         $aliases = $recipes = [];
 
+        if (!$contrib) {
+            $versions = HttpClient::create()->request('GET', 'https://flex.symfony.com/versions.json')->toArray();
+
+            foreach ($versions['splits'] as $package => $v) {
+                if (0 === strpos($package, 'symfony/') && '-pack' !== substr($package, -5)) {
+                    $alias = substr($package, 8);
+                    $aliases[$alias] = $package;
+                    $aliases[str_replace('-', '', $alias)] = $package;
+                }
+            }
+        }
+
         // stdin usually generated by `git ls-tree HEAD */*/*`
 
         while (false !== $line = fgets(STDIN)) {
@@ -77,7 +89,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
         file_put_contents($outputDir.'/index.json', json_encode([
             'aliases' => $aliases,
             'recipes' => $recipes,
-            'versions' => $contrib ? [] : HttpClient::create()->request('GET', 'https://flex.symfony.com/versions.json')->toArray(),
+            'versions' => $contrib ? [] : $versions,
             'branch' => $sourceBranch,
             'is_contrib' => $contrib,
             '_links' => [