diff --git a/src/ncc/CLI/PackageManagerMenu.php b/src/ncc/CLI/PackageManagerMenu.php
index a66d117..612d733 100644
--- a/src/ncc/CLI/PackageManagerMenu.php
+++ b/src/ncc/CLI/PackageManagerMenu.php
@@ -4,13 +4,21 @@
 
     use Exception;
     use ncc\Abstracts\ConsoleColors;
-    use ncc\Abstracts\RemoteSource;
+    use ncc\Abstracts\BuiltinRemoteSourceType;
+    use ncc\Abstracts\DefinedRemoteSourceType;
+    use ncc\Abstracts\RemoteSourceType;
     use ncc\Abstracts\Scopes;
-    use ncc\Classes\ComposerExtension\ComposerSource;
+    use ncc\Classes\ComposerExtension\ComposerSourceBuiltin;
+    use ncc\Classes\GithubExtension\GithubService;
+    use ncc\Classes\GitlabExtension\GitlabService;
     use ncc\Exceptions\FileNotFoundException;
+    use ncc\Exceptions\InstallationException;
     use ncc\Exceptions\PackageLockException;
+    use ncc\Exceptions\RuntimeException;
     use ncc\Exceptions\VersionNotFoundException;
+    use ncc\Managers\CredentialManager;
     use ncc\Managers\PackageManager;
+    use ncc\Managers\RemoteSourcesManager;
     use ncc\Objects\CliHelpSection;
     use ncc\Objects\Package;
     use ncc\Objects\RemotePackageInput;
@@ -32,6 +40,7 @@
             {
                 try
                 {
+                    Console::outException('Example Error', new Exception('test'), 1);
                     self::installPackage($args);
                     return;
                 }
@@ -191,33 +200,58 @@
                 return;
             }
 
-            $path = $package;
-            $parsed_source = new RemotePackageInput($path);
-            if($parsed_source->Vendor !== null && $parsed_source->Package !== null)
+            // check if authentication is provided
+            $entry_arg = ($args['auth'] ?? null);
+            $credential_manager = new CredentialManager();
+            $credential = $credential_manager->getVault()->getEntry($entry_arg);
+
+            if($credential == null)
             {
-                if($parsed_source->Source == null)
+                Console::outError(sprintf('Unknown credential entry \'%s\'', $entry_arg), true, 1);
+                return;
+            }
+
+            if(!$credential->isCurrentlyDecrypted())
+            {
+                // Try 3 times
+                for($i = 0; $i < 3; $i++)
                 {
-                    Console::outError('No source specified', true, 1);
-                    return;
+                    try
+                    {
+                        $credential->unlock(Console::passwordInput(sprintf('Enter Password for %s: ', $credential->getName())));
+                    }
+                    catch (RuntimeException $e)
+                    {
+                        Console::outException(sprintf('Failed to unlock credential %s', $credential->getName()), $e, 1);
+                        return;
+                    }
+
+                    if($credential->isCurrentlyDecrypted())
+                        break;
+
+                    Console::outWarning(sprintf('Invalid password, %d attempts remaining', 2 - $i));
                 }
 
-                switch($parsed_source->Source)
+                if(!$credential->isCurrentlyDecrypted())
                 {
-                    case RemoteSource::Composer:
-                        try
-                        {
-                            $path = ComposerSource::fetch($parsed_source);
-                            break;
-                        }
-                        catch(Exception $e)
-                        {
-                            Console::outException(sprintf('Failed to fetch package %s', $package), $e, 1);
-                            return;
-                        }
+                    Console::outError('Failed to unlock credential', true, 1);
+                    return;
+                }
+            }
 
-                    default:
-                        Console::outError('Cannot install package from source: ' . $parsed_source->Source, true, 1);
-                        return;
+            $path = $package;
+            $parsed_source = new RemotePackageInput($path);
+
+            if($parsed_source->Vendor !== null && $parsed_source->Package !== null)
+            {
+                try
+                {
+                    $path = $package_manager->fetchFromSource($parsed_source->toString());
+                }
+                catch (Exception $e)
+                {
+                    Console::outException('Failed to fetch package from source', $e, 1);
+                    return;
                 }
             }
 
diff --git a/src/ncc/Managers/PackageManager.php b/src/ncc/Managers/PackageManager.php
index b3a883e..143c036 100644
--- a/src/ncc/Managers/PackageManager.php
+++ b/src/ncc/Managers/PackageManager.php
@@ -110,10 +110,13 @@
 
             $extension = $package->Header->CompilerExtension->Extension;
             $installation_paths = new InstallationPaths($this->PackagesPath . DIRECTORY_SEPARATOR . $package->Assembly->Package . '=' . $package->Assembly->Version);
-            $installer = match ($extension) {
+
+            $installer = match ($extension)
+            {
                 CompilerExtensions::PHP => new PhpInstaller($package),
                 default => throw new UnsupportedCompilerExtensionException('The compiler extension \'' . $extension . '\' is not supported'),
             };
+
             $execution_pointer_manager = new ExecutionPointerManager();
             PackageCompiler::compilePackageConstants($package, [
                 ConstantReferences::Install => $installation_paths
@@ -407,24 +410,19 @@
          *
          * @param string $source
          * @return string
-         * @throws AccessDeniedException
-         * @throws FileNotFoundException
-         * @throws IOException
          * @throws InstallationException
-         * @throws MissingDependencyException
-         * @throws NotImplementedException
-         * @throws PackageAlreadyInstalledException
-         * @throws PackageLockException
-         * @throws PackageNotFoundException
-         * @throws PackageParsingException
-         * @throws UnsupportedCompilerExtensionException
-         * @throws UnsupportedRunnerException
-         * @throws VersionNotFoundException
          */
         public function installFromSource(string $source): string
         {
-            $package_path = $this->fetchFromSource($source);
-            return $this->install($package_path);
+            try
+            {
+                $package = $this->fetchFromSource($source);
+                return $this->install($package);
+            }
+            catch(Exception $e)
+            {
+                throw new InstallationException('Cannot install package from source, ' . $e->getMessage(), $e);
+            }
         }
 
         /**
@@ -481,6 +479,11 @@
                         case DependencySourceType::StaticLinking:
                             throw new PackageNotFoundException('Static linking not possible, package ' . $dependency->Name . ' is not installed');
 
+                        case DependencySourceType::RemoteSource:
+                            Console::outDebug('installing from remote source ' . $dependency->Source);
+                            $this->installFromSource($dependency->Source);
+                            break;
+
                         default:
                             throw new NotImplementedException('Dependency source type ' . $dependency->SourceType . ' is not implemented');
                     }
diff --git a/src/ncc/Objects/ProjectConfiguration/Dependency.php b/src/ncc/Objects/ProjectConfiguration/Dependency.php
index 3fa3116..6978740 100644
--- a/src/ncc/Objects/ProjectConfiguration/Dependency.php
+++ b/src/ncc/Objects/ProjectConfiguration/Dependency.php
@@ -30,7 +30,7 @@
         /**
          * Optional. The actual source where NCC can fetch the dependency from
          *
-         * @var DependencySourceType|string|null
+         * @var string|null
          */
         public $Source;