Small fixes

src/Composer/Command/CreateProjectCommand.php

@@ -374,7 +374,7 @@ EOT
     {
         $factory = new Factory();
 
-        return $factory->createDownloadManager($io, $config);
+        return $factory->createDownloadManager($io, $config, $factory->createHttpDownloader($io, $config));
     }
 
     protected function createInstallationManager()

src/Composer/Repository/ComposerRepository.php

@@ -28,6 +28,7 @@ use Composer\EventDispatcher\EventDispatcher;
 use Composer\Downloader\TransportException;
 use Composer\Semver\Constraint\ConstraintInterface;
 use Composer\Semver\Constraint\Constraint;
+use Composer\Semver\Constraint\EmptyConstraint;
 
 /**
  * @author Jordi Boggiano <j.boggiano@seld.be>
@@ -156,9 +157,19 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
      */
     public function findPackages($name, $constraint = null)
     {
-        if (!$this->hasProviders()) {
+        // this call initializes loadRootServerFile which is needed for the rest below to work
+        $hasProviders = $this->hasProviders();
+
+        // TODO we need a new way for the repo to report this v2 protocol somehow
+        if ($this->lazyProvidersUrl) {
+            return $this->loadAsyncPackages(array($name => new EmptyConstraint()), function ($name, $stability) {
+                return true;
+            });
+        }
+        if (!$hasProviders) {
             return parent::findPackages($name, $constraint);
         }
+
         // normalize name
         $name = strtolower($name);
 
@@ -197,10 +208,14 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
 
     public function loadPackages(array $packageNameMap, $isPackageAcceptableCallable)
     {
+        // this call initializes loadRootServerFile which is needed for the rest below to work
+        $hasProviders = $this->hasProviders();
+
+        // TODO we need a new way for the repo to report this v2 protocol somehow
         if ($this->lazyProvidersUrl) {
             return $this->loadAsyncPackages($packageNameMap, $isPackageAcceptableCallable);
         }
-        if (!$this->hasProviders()) {
+        if (!$hasProviders) {
             return parent::loadPackages($packageNameMap, $isPackageAcceptableCallable);
         }
 
@@ -225,6 +240,7 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
             }
             $packages = array_merge($packages, $matches);
         }
+
         return $packages;
     }
 
@@ -528,6 +544,11 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
 
         if ($this->lazyProvidersUrl) {
             foreach ($packageNames as $name => $constraint) {
+                // skip platform packages, root package and composer-plugin-api
+                if (preg_match(PlatformRepository::PLATFORM_PACKAGE_REGEX, $name) || '__root__' === $name || 'composer-plugin-api' === $name) {
+                    continue;
+                }
+
                 $url = str_replace('%package%', $name, $this->lazyProvidersUrl);
                 $cacheKey = 'provider-'.strtr($name, '/', '$').'.json';
 

src/Composer/Repository/RepositoryInterface.php

@@ -13,6 +13,7 @@
 namespace Composer\Repository;
 
 use Composer\Package\PackageInterface;
+use Composer\Semver\Constraint\ConstraintInterface;
 
 /**
  * Repository interface.
@@ -39,7 +40,7 @@ interface RepositoryInterface extends \Countable
      * Searches for the first match of a package by name and version.
      *
      * @param string                     $name       package name
-     * @param string|\Composer\Semver\Constraint\ConstraintInterface $constraint package version or version constraint to match against
+     * @param string|ConstraintInterface $constraint package version or version constraint to match against
      *
      * @return PackageInterface|null
      */
@@ -49,7 +50,7 @@ interface RepositoryInterface extends \Countable
      * Searches for all packages matching a name and optionally a version.
      *
      * @param string                     $name       package name
-     * @param string|\Composer\Semver\Constraint\ConstraintInterface $constraint package version or version constraint to match against
+     * @param string|ConstraintInterface $constraint package version or version constraint to match against
      *
      * @return PackageInterface[]
      */
@@ -66,7 +67,7 @@ interface RepositoryInterface extends \Countable
     /**
      * Returns list of registered packages with the supplied name
      *
-     * @param bool[] $packageNameMap
+     * @param ConstraintInterface[] $packageNameMap package names pointing to constraints
      * @param $isPackageAcceptableCallable
      * @return PackageInterface[]
      */