Merge branch '1.x' into 2.x

* 1.x:
  Re-run composer when flex is installed after deps are resolved
  Fix compat with old composer versions
  Improve declinating composer.lock into symfony.lock
  Add some native return types
  Update Downloader.php

Author: nicolas-grekas

src/Downloader.php

@@ -218,8 +218,8 @@ public function getRecipes(array $operations): array
                         break;
                     }
 
-                    if (isset($links['recipes_template_relative'])) {
-                        $links['recipes_template'] = preg_replace('{[^/\?]*+(?=\?|$)}', $links['recipes_template_relative'], $endpoint, 1);
+                    if (isset($links['recipe_template_relative'])) {
+                        $links['recipe_template'] = preg_replace('{[^/\?]*+(?=\?|$)}', $links['recipe_template_relative'], $endpoint, 1);
                     }
 
                     $urls[] = strtr($links['recipe_template'], [

src/Flex.php

@@ -76,6 +76,7 @@ class Flex implements PluginInterface, EventSubscriberInterface
     private $lock;
     private $displayThanksReminder = 0;
     private $dryRun = false;
+    private $reinstall;
     private static $activated = true;
     private static $aliasResolveCommands = [
         'require' => true,
@@ -117,8 +118,12 @@ class_exists(__NAMESPACE__.str_replace('/', '\\', substr($file, \strlen(__DIR__)
             $this->filter = new PackageFilter($io, $symfonyRequire, $this->downloader);
         }
 
+        $composerFile = Factory::getComposerFile();
+        $composerLock = 'json' === pathinfo($composerFile, \PATHINFO_EXTENSION) ? substr($composerFile, 0, -4).'lock' : $composerFile.'.lock';
+        $symfonyLock = str_replace('composer', 'symfony', basename($composerLock));
+
         $this->configurator = new Configurator($composer, $io, $this->options);
-        $this->lock = new Lock(getenv('SYMFONY_LOCKFILE') ?: str_replace('composer.json', 'symfony.lock', Factory::getComposerFile()));
+        $this->lock = new Lock(getenv('SYMFONY_LOCKFILE') ?: \dirname($composerLock).'/'.(basename($composerLock) !== $symfonyLock ? $symfonyLock : 'symfony.lock'));
 
         $disable = true;
         foreach (array_merge($composer->getPackage()->getRequires() ?? [], $composer->getPackage()->getDevRequires() ?? []) as $link) {
@@ -244,6 +249,13 @@ public function configureProject(Event $event)
         $this->updateComposerLock();
     }
 
+    public function recordFlexInstall(PackageEvent $event)
+    {
+        if (null === $this->reinstall && 'symfony/flex' === $event->getOperation()->getPackage()->getName()) {
+            $this->reinstall = true;
+        }
+    }
+
     public function record(PackageEvent $event)
     {
         if ($this->shouldRecordOperation($event->getOperation(), $event->isDevMode(), $event->getComposer())) {
@@ -286,7 +298,7 @@ public function update(Event $event, $operations = [])
         $contents = file_get_contents($file);
         $json = JsonFile::parseJson($contents);
 
-        if (!isset($json['flex-require']) && !isset($json['flex-require-dev'])) {
+        if (!$this->reinstall && !isset($json['flex-require']) && !isset($json['flex-require-dev'])) {
             $this->unpack($event);
 
             return;
@@ -298,17 +310,18 @@ public function update(Event $event, $operations = [])
         $symfonyVersion = $json['extra']['symfony']['require'] ?? null;
         $versions = $symfonyVersion ? $this->downloader->getVersions() : null;
         foreach (['require', 'require-dev'] as $type) {
-            if (isset($json['flex-'.$type])) {
-                foreach ($json['flex-'.$type] as $package => $constraint) {
-                    if ($symfonyVersion && '*' === $constraint && isset($versions['splits'][$package])) {
-                        // replace unbounded constraints for symfony/* packages by extra.symfony.require
-                        $constraint = $symfonyVersion;
-                    }
-                    $manipulator->addLink($type, $package, $constraint, $sortPackages);
+            if (!isset($json['flex-'.$type])) {
+                continue;
+            }
+            foreach ($json['flex-'.$type] as $package => $constraint) {
+                if ($symfonyVersion && '*' === $constraint && isset($versions['splits'][$package])) {
+                    // replace unbounded constraints for symfony/* packages by extra.symfony.require
+                    $constraint = $symfonyVersion;
                 }
-
-                $manipulator->removeMainKey('flex-'.$type);
+                $manipulator->addLink($type, $package, $constraint, $sortPackages);
             }
+
+            $manipulator->removeMainKey('flex-'.$type);
         }
 
         file_put_contents($file, $manipulator->getContents());
@@ -671,7 +684,7 @@ private function formatOrigin(Recipe $recipe): string
 
     private function shouldRecordOperation(OperationInterface $operation, bool $isDevMode, Composer $composer = null): bool
     {
-        if ($this->dryRun) {
+        if ($this->dryRun || $this->reinstall) {
             return false;
         }
 
@@ -746,6 +759,7 @@ private function unpack(Event $event)
 
     private function reinstall(Event $event, bool $update)
     {
+        $this->reinstall = false;
         $event->stopPropagation();
 
         $ed = $this->composer->getEventDispatcher();
@@ -783,6 +797,7 @@ public static function getSubscribedEvents(): array
 
         $events = [
             PackageEvents::POST_PACKAGE_UPDATE => 'enableThanksReminder',
+            PackageEvents::POST_PACKAGE_INSTALL => 'recordFlexInstall',
             InstallerEvents::PRE_OPERATIONS_EXEC => 'recordOperations',
             PluginEvents::PRE_POOL_CREATE => 'truncatePackages',
             ScriptEvents::POST_CREATE_PROJECT_CMD => 'configureProject',