diff --git a/src/Downloader.php b/src/Downloader.php
index f961ae1ee..1894291a0 100644
--- a/src/Downloader.php
+++ b/src/Downloader.php
@@ -31,6 +31,7 @@ class Downloader
     private static $MAX_LENGTH = 1000;
     private static $versions;
 
+    private $composerConfig;
     private $io;
     private $sess;
     private $cache;
@@ -49,9 +50,9 @@ public function __construct(Composer $composer, IoInterface $io, $rfs)
 
         $this->endpoint = rtrim(getenv('SYMFONY_ENDPOINT') ?: ($composer->getPackage()->getExtra()['symfony']['endpoint'] ?? self::$DEFAULT_ENDPOINT), '/');
         $this->io = $io;
-        $config = $composer->getConfig();
+        $this->composerConfig = $composer->getConfig();
         $this->rfs = $rfs;
-        $this->cache = new ComposerCache($io, $config->get('cache-repo-dir').'/'.preg_replace('{[^a-z0-9.]}i', '-', $this->endpoint));
+        $this->cache = new ComposerCache($io, $this->composerConfig->get('cache-repo-dir').'/'.preg_replace('{[^a-z0-9.]}i', '-', $this->endpoint));
         $this->sess = bin2hex(random_bytes(16));
     }
 
@@ -91,6 +92,7 @@ public function getRecipes(array $operations): array
             $this->io->writeError('<warning>Using "'.$this->endpoint.'" as the Symfony endpoint</>');
         }
 
+        $localManifestPaths = [];
         $paths = [];
         $chunk = '';
         foreach ($operations as $i => $operation) {
@@ -125,6 +127,14 @@ public function getRecipes(array $operations): array
                 }
             }
 
+            $localPackagePath = sprintf(
+                '%s/%s',
+                $this->composerConfig->get('vendor-dir'),
+                $package->getName()
+            );
+
+            $localManifestPaths[$package->getName()] = sprintf('%s/recipe/manifest.json', $localPackagePath);
+
             // FIXME: Multi name with getNames()
             $name = str_replace('/', ',', $package->getName());
             $path = sprintf('%s,%s%s', $name, $o, $version);
@@ -165,6 +175,22 @@ public function getRecipes(array $operations): array
             });
         }
 
+        foreach ($localManifestPaths as $name => $manifestPath) {
+            if (!file_exists($manifestPath)) {
+                continue;
+            }
+
+            $content = json_decode(file_get_contents($manifestPath), true);
+
+            $bodies[] = [
+                'manifests' => [
+                    $name => [
+                        'manifest' => $content
+                    ]
+                ]
+            ];
+        }
+
         $data = [];
         foreach ($bodies as $body) {
             foreach ($body['manifests'] as $name => $manifest) {