Add compatibility with composer2

Author: jderusse

.travis.yml

@@ -24,6 +24,7 @@ env:
 
 before_install:
   - ([[ $TRAVIS_PHP_VERSION = nightly ]] && composer config platform.php 7.4.99 || true)
+  - composer self-update --snapshot
   - composer validate
 
 install:

composer.json

@@ -12,10 +12,10 @@
     "minimum-stability": "dev",
     "require": {
         "php": ">=7.1",
-        "composer-plugin-api": "^1.0"
+        "composer-plugin-api": "^2.0"
     },
     "require-dev": {
-        "composer/composer": "^1.0.2",
+        "composer/composer": "^2.0@dev",
         "symfony/dotenv": "^4.4|^5.0",
         "symfony/phpunit-bridge": "^4.4|^5.0",
         "symfony/process": "^4.4|^5.0"
@@ -27,7 +27,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.7-dev"
+            "dev-master": "2.0-dev"
         },
         "class": "Symfony\\Flex\\Flex"
     }

src/Cache.php

@@ -13,12 +13,12 @@
 
 use Composer\Command\BaseCommand;
 use Composer\Downloader\TransportException;
+use Composer\Util\HttpDownloader;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Flex\InformationOperation;
 use Symfony\Flex\Lock;
-use Symfony\Flex\ParallelDownloader;
 use Symfony\Flex\Recipe;
 
 /**
@@ -32,7 +32,7 @@ class RecipesCommand extends BaseCommand
     private $symfonyLock;
     private $downloader;
 
-    public function __construct(/* cannot be type-hinted */ $flex, Lock $symfonyLock, ParallelDownloader $downloader)
+    public function __construct(/* cannot be type-hinted */ $flex, Lock $symfonyLock, HttpDownloader $downloader)
     {
         $this->flex = $flex;
         $this->symfonyLock = $symfonyLock;
@@ -354,8 +354,8 @@ private function findRecipeCommitDataFromTreeRef(string $package, string $repo,
 
     private function requestGitHubApi(string $path)
     {
-        $contents = $this->downloader->getContents('api.github.com', $path, false);
+        $response = $this->downloader->get($path);
 
-        return json_decode($contents, true);
+        return json_decode($response->getBody(), true);
     }
 }

src/Command/RecipesCommand.php

@@ -114,14 +114,13 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $lockFile->write($lockData);
 
         // force removal of files under vendor/
-        $locker = new Locker($io, $lockFile, $composer->getRepositoryManager(), $composer->getInstallationManager(), file_get_contents($json->getPath()));
+        $locker = new Locker($io, $lockFile, $composer->getInstallationManager(), file_get_contents($json->getPath()));
         $composer->setLocker($locker);
         $install = Installer::create($io, $composer);
         $install
             ->setDevMode(true)
             ->setDumpAutoloader(false)
             ->setRunScripts(false)
-            ->setSkipSuggest(true)
             ->setIgnorePlatformRequirements(true)
         ;