Split up Application and Container

- Stop trying to implement Laravel's Application contract, which
  has no value for us.
- Stop inheriting from the Container, injecting one works equally
  well and does not clutter up the interfaces.
- Inject the Paths collection instead of unwrapping it again, for
  better encapsulation.

This brings us one step closer toward upgrading our Laravel
components (#2055), because we no longer need to adopt the changes
to the Application contract.

src/Admin/AdminServiceProvider.php

@@ -12,7 +12,6 @@ namespace Flarum\Admin;
 use Flarum\Extension\Event\Disabled;
 use Flarum\Extension\Event\Enabled;
 use Flarum\Foundation\AbstractServiceProvider;
-use Flarum\Foundation\Application;
 use Flarum\Foundation\ErrorHandling\Registry;
 use Flarum\Foundation\ErrorHandling\Reporter;
 use Flarum\Foundation\ErrorHandling\ViewFormatter;
@@ -60,14 +59,14 @@ class AdminServiceProvider extends AbstractServiceProvider
             ];
         });
 
-        $this->app->singleton('flarum.admin.handler', function (Application $app) {
+        $this->app->singleton('flarum.admin.handler', function () {
             $pipe = new MiddlewarePipe;
 
             // All requests should first be piped through our global error handler
             $pipe->pipe(new HttpMiddleware\HandleErrors(
-                $app->make(Registry::class),
+                $this->app->make(Registry::class),
-                $app->inDebugMode() ? $app->make(WhoopsFormatter::class) : $app->make(ViewFormatter::class),
+                $this->app['flarum']->inDebugMode() ? $this->app->make(WhoopsFormatter::class) : $this->app->make(ViewFormatter::class),
-                $app->tagged(Reporter::class)
+                $this->app->tagged(Reporter::class)
             ));
 
             foreach ($this->app->make('flarum.admin.middleware') as $middleware) {

src/Api/ApiServiceProvider.php

@@ -15,7 +15,6 @@ use Flarum\Api\Serializer\BasicDiscussionSerializer;
 use Flarum\Api\Serializer\NotificationSerializer;
 use Flarum\Event\ConfigureNotificationTypes;
 use Flarum\Foundation\AbstractServiceProvider;
-use Flarum\Foundation\Application;
 use Flarum\Foundation\ErrorHandling\JsonApiFormatter;
 use Flarum\Foundation\ErrorHandling\Registry;
 use Flarum\Foundation\ErrorHandling\Reporter;
@@ -56,13 +55,13 @@ class ApiServiceProvider extends AbstractServiceProvider
             ];
         });
 
-        $this->app->singleton('flarum.api.handler', function (Application $app) {
+        $this->app->singleton('flarum.api.handler', function () {
             $pipe = new MiddlewarePipe;
 
             $pipe->pipe(new HttpMiddleware\HandleErrors(
-                $app->make(Registry::class),
+                $this->app->make(Registry::class),
-                new JsonApiFormatter($app->inDebugMode()),
+                new JsonApiFormatter($this->app['flarum']->inDebugMode()),
-                $app->tagged(Reporter::class)
+                $this->app->tagged(Reporter::class)
             ));
 
             foreach ($this->app->make('flarum.api.middleware') as $middleware) {

src/Database/DatabaseServiceProvider.php

@@ -24,7 +24,7 @@ class DatabaseServiceProvider extends AbstractServiceProvider
         $this->app->singleton(Manager::class, function ($app) {
             $manager = new Manager($app);
 
-            $config = $app->config('database');
+            $config = $this->app['flarum']->config('database');
             $config['engine'] = 'InnoDB';
             $config['prefix_indexes'] = true;
 

src/Database/MigrationServiceProvider.php

@@ -10,7 +10,6 @@
 namespace Flarum\Database;
 
 use Flarum\Foundation\AbstractServiceProvider;
-use Flarum\Foundation\Application;
 use Illuminate\Filesystem\Filesystem;
 
 class MigrationServiceProvider extends AbstractServiceProvider
@@ -24,8 +23,11 @@ class MigrationServiceProvider extends AbstractServiceProvider
             return new DatabaseMigrationRepository($app['flarum.db'], 'migrations');
         });
 
-        $this->app->bind(MigrationCreator::class, function (Application $app) {
+        $this->app->bind(MigrationCreator::class, function () {
-            return new MigrationCreator($app->make(Filesystem::class), $app->basePath());
+            return new MigrationCreator(
+                $this->app->make(Filesystem::class),
+                $this->app->basePath()
+            );
         });
     }
 }

src/Extension/ExtensionServiceProvider.php

@@ -11,7 +11,6 @@ namespace Flarum\Extension;
 
 use Flarum\Extension\Event\Disabling;
 use Flarum\Foundation\AbstractServiceProvider;
-use Illuminate\Contracts\Container\Container;
 
 class ExtensionServiceProvider extends AbstractServiceProvider
 {
@@ -27,8 +26,8 @@ class ExtensionServiceProvider extends AbstractServiceProvider
         // listener on the app rather than in the service provider's boot method
         // below, so that extensions have a chance to register things on the
         // container before the core boots up (and starts resolving services).
-        $this->app->booting(function (Container $app) {
+        $this->app['flarum']->booting(function () {
-            $app->make('flarum.extensions')->extend($app);
+            $this->app->make('flarum.extensions')->extend($this->app);
         });
     }
 

src/Formatter/FormatterServiceProvider.php

@@ -24,7 +24,7 @@ class FormatterServiceProvider extends AbstractServiceProvider
             return new Formatter(
                 new Repository($container->make('cache.filestore')),
                 $container->make('events'),
-                $this->app->storagePath().'/formatter'
+                $this->app['flarum']->storagePath().'/formatter'
             );
         });
 

src/Forum/ForumServiceProvider.php

@@ -13,7 +13,6 @@ use Flarum\Extension\Event\Disabled;
 use Flarum\Extension\Event\Enabled;
 use Flarum\Formatter\Formatter;
 use Flarum\Foundation\AbstractServiceProvider;
-use Flarum\Foundation\Application;
 use Flarum\Foundation\ErrorHandling\Registry;
 use Flarum\Foundation\ErrorHandling\Reporter;
 use Flarum\Foundation\ErrorHandling\ViewFormatter;
@@ -70,14 +69,14 @@ class ForumServiceProvider extends AbstractServiceProvider
             ];
         });
 
-        $this->app->singleton('flarum.forum.handler', function (Application $app) {
+        $this->app->singleton('flarum.forum.handler', function () {
             $pipe = new MiddlewarePipe;
 
             // All requests should first be piped through our global error handler
             $pipe->pipe(new HttpMiddleware\HandleErrors(
-                $app->make(Registry::class),
+                $this->app->make(Registry::class),
-                $app->inDebugMode() ? $app->make(WhoopsFormatter::class) : $app->make(ViewFormatter::class),
+                $this->app['flarum']->inDebugMode() ? $this->app->make(WhoopsFormatter::class) : $this->app->make(ViewFormatter::class),
-                $app->tagged(Reporter::class)
+                $this->app->tagged(Reporter::class)
             ));
 
             foreach ($this->app->make('flarum.forum.middleware') as $middleware) {

src/Foundation/AbstractServiceProvider.php

@@ -9,21 +9,22 @@
 
 namespace Flarum\Foundation;
 
+use Illuminate\Contracts\Container\Container;
 use Illuminate\Support\ServiceProvider;
 
 abstract class AbstractServiceProvider extends ServiceProvider
 {
     /**
-     * @var Application
+     * @var Container
      */
     protected $app;
 
     /**
-     * @param Application $app
+     * @param Container $container
      */
-    public function __construct(Application $app)
+    public function __construct(Container $container)
     {
-        parent::__construct($app);
+        $this->app = $container;
     }
 
     /**

src/Foundation/Application.php

@@ -9,14 +9,12 @@
 
 namespace Flarum\Foundation;
 
-use Illuminate\Container\Container;
+use Illuminate\Contracts\Container\Container;
-use Illuminate\Contracts\Foundation\Application as ApplicationContract;
 use Illuminate\Events\EventServiceProvider;
 use Illuminate\Support\Arr;
 use Illuminate\Support\ServiceProvider;
-use Illuminate\Support\Str;
 
-class Application extends Container implements ApplicationContract
+class Application
 {
     /**
      * The Flarum version.
@@ -26,32 +24,18 @@ class Application extends Container implements ApplicationContract
     const VERSION = '0.1.0-beta.13-dev';
 
     /**
-     * The base path for the Flarum installation.
+     * The IoC container for the Flarum application.
      *
-     * @var string
+     * @var Container
      */
-    protected $basePath;
+    private $container;
 
     /**
-     * The public path for the Flarum installation.
+     * The paths for the Flarum installation.
      *
-     * @var string
+     * @var Paths
      */
-    protected $publicPath;
+    protected $paths;
-
-    /**
-     * The custom storage path defined by the developer.
-     *
-     * @var string
-     */
-    protected $storagePath;
-
-    /**
-     * A custom vendor path to find dependencies in non-standard environments.
-     *
-     * @var string
-     */
-    protected $vendorPath;
 
     /**
      * Indicates if the application has "booted".
@@ -88,34 +72,22 @@ class Application extends Container implements ApplicationContract
      */
     protected $loadedProviders = [];
 
-    /**
-     * The deferred services and their providers.
-     *
-     * @var array
-     */
-    protected $deferredServices = [];
-
     /**
      * Create a new Flarum application instance.
      *
-     * @param string|null $basePath
+     * @param Container $container
-     * @param string|null $publicPath
+     * @param Paths $paths
      */
-    public function __construct($basePath = null, $publicPath = null)
+    public function __construct(Container $container, Paths $paths)
     {
+        $this->container = $container;
+        $this->paths = $paths;
+
         $this->registerBaseBindings();
-
         $this->registerBaseServiceProviders();
-
         $this->registerCoreContainerAliases();
 
-        if ($basePath) {
+        $this->bindPathsInContainer();
-            $this->setBasePath($basePath);
-        }
-
-        if ($publicPath) {
-            $this->setPublicPath($publicPath);
-        }
     }
 
     /**
@@ -125,7 +97,7 @@ class Application extends Container implements ApplicationContract
      */
     public function config($key, $default = null)
     {
-        return Arr::get($this->make('flarum.config'), $key, $default);
+        return Arr::get($this->container->make('flarum.config'), $key, $default);
     }
 
     /**
@@ -146,7 +118,7 @@ class Application extends Container implements ApplicationContract
      */
     public function url($path = null)
     {
-        $config = $this->make('flarum.config');
+        $config = $this->container->make('flarum.config');
         $url = Arr::get($config, 'url', Arr::get($_SERVER, 'REQUEST_URI'));
 
         if (is_array($url)) {
@@ -164,26 +136,21 @@ class Application extends Container implements ApplicationContract
         return $url;
     }
 
-    /**
-     * Get the version number of the application.
-     *
-     * @return string
-     */
-    public function version()
-    {
-        return static::VERSION;
-    }
-
     /**
      * Register the basic bindings into the container.
      */
     protected function registerBaseBindings()
     {
-        static::setInstance($this);
+        \Illuminate\Container\Container::setInstance($this->container);
 
-        $this->instance('app', $this);
+        $this->container->instance('app', $this->container);
+        $this->container->alias('app', \Illluminate\Container\Container::class);
 
-        $this->instance(Container::class, $this);
+        $this->container->instance('flarum', $this);
+        $this->container->alias('flarum', self::class);
+
+        $this->container->instance('flarum.paths', $this->paths);
+        $this->container->alias('flarum.paths', Paths::class);
     }
 
     /**
@@ -191,37 +158,7 @@ class Application extends Container implements ApplicationContract
      */
     protected function registerBaseServiceProviders()
     {
-        $this->register(new EventServiceProvider($this));
+        $this->register(new EventServiceProvider($this->container));
-    }
-
-    /**
-     * Set the base path for the application.
-     *
-     * @param string $basePath
-     * @return $this
-     */
-    public function setBasePath($basePath)
-    {
-        $this->basePath = rtrim($basePath, '\/');
-
-        $this->bindPathsInContainer();
-
-        return $this;
-    }
-
-    /**
-     * Set the public path for the application.
-     *
-     * @param string $publicPath
-     * @return $this
-     */
-    public function setPublicPath($publicPath)
-    {
-        $this->publicPath = rtrim($publicPath, '\/');
-
-        $this->bindPathsInContainer();
-
-        return $this;
     }
 
     /**
@@ -232,7 +169,7 @@ class Application extends Container implements ApplicationContract
     protected function bindPathsInContainer()
     {
         foreach (['base', 'public', 'storage', 'vendor'] as $path) {
-            $this->instance('path.'.$path, $this->{$path.'Path'}());
+            $this->container->instance('path.'.$path, $this->paths->$path);
         }
     }
 
@@ -243,7 +180,7 @@ class Application extends Container implements ApplicationContract
      */
     public function basePath()
     {
-        return $this->basePath;
+        return $this->paths->base;
     }
 
     /**
@@ -253,7 +190,7 @@ class Application extends Container implements ApplicationContract
      */
     public function publicPath()
     {
-        return $this->publicPath;
+        return $this->paths->public;
     }
 
     /**
@@ -263,7 +200,7 @@ class Application extends Container implements ApplicationContract
      */
     public function storagePath()
     {
-        return $this->storagePath ?: $this->basePath.DIRECTORY_SEPARATOR.'storage';
+        return $this->paths->storage;
     }
 
     /**
@@ -273,89 +210,7 @@ class Application extends Container implements ApplicationContract
      */
     public function vendorPath()
     {
-        return $this->vendorPath ?: $this->basePath.DIRECTORY_SEPARATOR.'vendor';
+        return $this->paths->vendor;
-    }
-
-    /**
-     * Set the storage directory.
-     *
-     * @param string $path
-     * @return $this
-     */
-    public function useStoragePath($path)
-    {
-        $this->storagePath = $path;
-
-        $this->instance('path.storage', $path);
-
-        return $this;
-    }
-
-    /**
-     * Set the vendor directory.
-     *
-     * @param string $path
-     * @return $this
-     */
-    public function useVendorPath($path)
-    {
-        $this->vendorPath = $path;
-
-        $this->instance('path.vendor', $path);
-
-        return $this;
-    }
-
-    /**
-     * Get or check the current application environment.
-     *
-     * @param mixed
-     * @return string
-     */
-    public function environment()
-    {
-        if (func_num_args() > 0) {
-            $patterns = is_array(func_get_arg(0)) ? func_get_arg(0) : func_get_args();
-
-            foreach ($patterns as $pattern) {
-                if (Str::is($pattern, $this['env'])) {
-                    return true;
-                }
-            }
-
-            return false;
-        }
-
-        return $this['env'];
-    }
-
-    /**
-     * Determine if we are running in the console.
-     *
-     * @return bool
-     */
-    public function runningInConsole()
-    {
-        return php_sapi_name() == 'cli';
-    }
-
-    /**
-     * Determine if we are running unit tests.
-     *
-     * @return bool
-     */
-    public function runningUnitTests()
-    {
-        return $this['env'] == 'testing';
-    }
-
-    /**
-     * Register all of the configured providers.
-     *
-     * @return void
-     */
-    public function registerConfiguredProviders()
-    {
     }
 
     /**
@@ -423,7 +278,7 @@ class Application extends Container implements ApplicationContract
      */
     public function resolveProviderClass($provider)
     {
-        return new $provider($this);
+        return new $provider($this->container);
     }
 
     /**
@@ -434,106 +289,13 @@ class Application extends Container implements ApplicationContract
      */
     protected function markAsRegistered($provider)
     {
-        $this['events']->dispatch($class = get_class($provider), [$provider]);
+        $this->container['events']->dispatch($class = get_class($provider), [$provider]);
 
         $this->serviceProviders[] = $provider;
 
         $this->loadedProviders[$class] = true;
     }
 
-    /**
-     * Load and boot all of the remaining deferred providers.
-     */
-    public function loadDeferredProviders()
-    {
-        // We will simply spin through each of the deferred providers and register each
-        // one and boot them if the application has booted. This should make each of
-        // the remaining services available to this application for immediate use.
-        foreach ($this->deferredServices as $service => $provider) {
-            $this->loadDeferredProvider($service);
-        }
-
-        $this->deferredServices = [];
-    }
-
-    /**
-     * Load the provider for a deferred service.
-     *
-     * @param string $service
-     */
-    public function loadDeferredProvider($service)
-    {
-        if (! isset($this->deferredServices[$service])) {
-            return;
-        }
-
-        $provider = $this->deferredServices[$service];
-
-        // If the service provider has not already been loaded and registered we can
-        // register it with the application and remove the service from this list
-        // of deferred services, since it will already be loaded on subsequent.
-        if (! isset($this->loadedProviders[$provider])) {
-            $this->registerDeferredProvider($provider, $service);
-        }
-    }
-
-    /**
-     * Register a deferred provider and service.
-     *
-     * @param string $provider
-     * @param string $service
-     */
-    public function registerDeferredProvider($provider, $service = null)
-    {
-        // Once the provider that provides the deferred service has been registered we
-        // will remove it from our local list of the deferred services with related
-        // providers so that this container does not try to resolve it out again.
-        if ($service) {
-            unset($this->deferredServices[$service]);
-        }
-
-        $this->register($instance = new $provider($this));
-
-        if (! $this->booted) {
-            $this->booting(function () use ($instance) {
-                $this->bootProvider($instance);
-            });
-        }
-    }
-
-    /**
-     * Resolve the given type from the container.
-     *
-     * (Overriding Container::make)
-     *
-     * @param string $abstract
-     * @param array $parameters
-     * @return mixed
-     */
-    public function make($abstract, array $parameters = [])
-    {
-        $abstract = $this->getAlias($abstract);
-
-        if (isset($this->deferredServices[$abstract])) {
-            $this->loadDeferredProvider($abstract);
-        }
-
-        return parent::make($abstract, $parameters);
-    }
-
-    /**
-     * Determine if the given abstract type has been bound.
-     *
-     * (Overriding Container::bound)
-     *
-     * @param string $abstract
-     * @return bool
-     */
-    public function bound($abstract)
-    {
-        return isset($this->deferredServices[$abstract]) || parent::bound($abstract);
-    }
-
     /**
      * Determine if the application has booted.
      *
@@ -578,7 +340,7 @@ class Application extends Container implements ApplicationContract
     protected function bootProvider(ServiceProvider $provider)
     {
         if (method_exists($provider, 'boot')) {
-            return $this->call([$provider, 'boot']);
+            return $this->container->call([$provider, 'boot']);
         }
     }
 
@@ -621,96 +383,13 @@ class Application extends Container implements ApplicationContract
         }
     }
 
-    /**
-     * Get the path to the cached "compiled.php" file.
-     *
-     * @return string
-     */
-    public function getCachedCompilePath()
-    {
-        return $this->basePath().'/bootstrap/cache/compiled.php';
-    }
-
-    /**
-     * Get the path to the cached services.json file.
-     *
-     * @return string
-     */
-    public function getCachedServicesPath()
-    {
-        return $this->basePath().'/bootstrap/cache/services.json';
-    }
-
-    /**
-     * Determine if the application is currently down for maintenance.
-     *
-     * @return bool
-     */
-    public function isDownForMaintenance()
-    {
-        return $this->config('offline');
-    }
-
-    /**
-     * Get the service providers that have been loaded.
-     *
-     * @return array
-     */
-    public function getLoadedProviders()
-    {
-        return $this->loadedProviders;
-    }
-
-    /**
-     * Get the application's deferred services.
-     *
-     * @return array
-     */
-    public function getDeferredServices()
-    {
-        return $this->deferredServices;
-    }
-
-    /**
-     * Set the application's deferred services.
-     *
-     * @param  array  $services
-     * @return void
-     */
-    public function setDeferredServices(array $services)
-    {
-        $this->deferredServices = $services;
-    }
-
-    /**
-     * Add an array of services to the application's deferred services.
-     *
-     * @param  array  $services
-     * @return void
-     */
-    public function addDeferredServices(array $services)
-    {
-        $this->deferredServices = array_merge($this->deferredServices, $services);
-    }
-
-    /**
-     * Determine if the given service is a deferred service.
-     *
-     * @param  string  $service
-     * @return bool
-     */
-    public function isDeferredService($service)
-    {
-        return isset($this->deferredServices[$service]);
-    }
-
     /**
      * Register the core class aliases in the container.
      */
     public function registerCoreContainerAliases()
     {
         $aliases = [
-            'app'                  => [self::class, \Illuminate\Contracts\Container\Container::class, \Illuminate\Contracts\Foundation\Application::class,  \Psr\Container\ContainerInterface::class],
+            'app'                  => [\Illuminate\Contracts\Container\Container::class, \Illuminate\Contracts\Foundation\Application::class,  \Psr\Container\ContainerInterface::class],
             'blade.compiler'       => [\Illuminate\View\Compilers\BladeCompiler::class],
             'cache'                => [\Illuminate\Cache\CacheManager::class, \Illuminate\Contracts\Cache\Factory::class],
             'cache.store'          => [\Illuminate\Cache\Repository::class, \Illuminate\Contracts\Cache\Repository::class],
@@ -730,36 +409,8 @@ class Application extends Container implements ApplicationContract
 
         foreach ($aliases as $key => $aliases) {
             foreach ((array) $aliases as $alias) {
-                $this->alias($key, $alias);
+                $this->container->alias($key, $alias);
             }
         }
     }
-
-    /**
-     * Flush the container of all bindings and resolved instances.
-     */
-    public function flush()
-    {
-        parent::flush();
-
-        $this->loadedProviders = [];
-    }
-
-    /**
-     * Get the path to the cached packages.php file.
-     *
-     * @return string
-     */
-    public function getCachedPackagesPath()
-    {
-        return storage_path('app/cache/packages.php');
-    }
-
-    /**
-     * @return string
-     */
-    public function resourcePath()
-    {
-        return storage_path('resources');
-    }
 }

src/Foundation/InstalledSite.php

@@ -95,19 +95,18 @@ class InstalledSite implements SiteInterface
         return $this;
     }
 
-    private function bootLaravel(): Application
+    private function bootLaravel(): Container
     {
-        $laravel = new Application($this->paths->base, $this->paths->public);
+        $container = new \Illuminate\Container\Container;
+        $laravel = new Application($container, $this->paths);
 
-        $laravel->useStoragePath($this->paths->storage);
+        $container->instance('env', 'production');
-        $laravel->useVendorPath($this->paths->vendor);
+        $container->instance('flarum.config', $this->config);
+        $container->instance('flarum.debug', $laravel->inDebugMode());
+        $container->instance('config', $config = $this->getIlluminateConfig($laravel));
 
-        $laravel->instance('env', 'production');
+        $this->registerLogger($container);
-        $laravel->instance('flarum.config', $this->config);
+        $this->registerCache($container);
-        $laravel->instance('config', $config = $this->getIlluminateConfig($laravel));
-
-        $this->registerLogger($laravel);
-        $this->registerCache($laravel);
 
         $laravel->register(AdminServiceProvider::class);
         $laravel->register(ApiServiceProvider::class);
@@ -138,18 +137,18 @@ class InstalledSite implements SiteInterface
         $laravel->register(ValidationServiceProvider::class);
         $laravel->register(ViewServiceProvider::class);
 
-        $laravel->booting(function (Container $app) {
+        $laravel->booting(function () use ($container) {
             // Run all local-site extenders before booting service providers
             // (but after those from "real" extensions, which have been set up
             // in a service provider above).
             foreach ($this->extenders as $extension) {
-                $extension->extend($app);
+                $extension->extend($container);
             }
         });
 
         $laravel->boot();
 
-        return $laravel;
+        return $container;
     }
 
     /**
@@ -189,26 +188,26 @@ class InstalledSite implements SiteInterface
         ]);
     }
 
-    private function registerLogger(Application $app)
+    private function registerLogger(Container $container)
     {
         $logPath = $this->paths->storage.'/logs/flarum.log';
         $handler = new RotatingFileHandler($logPath, Logger::INFO);
         $handler->setFormatter(new LineFormatter(null, null, true, true));
 
-        $app->instance('log', new Logger($app->environment(), [$handler]));
+        $container->instance('log', new Logger('flarum', [$handler]));
-        $app->alias('log', LoggerInterface::class);
+        $container->alias('log', LoggerInterface::class);
     }
 
-    private function registerCache(Application $app)
+    private function registerCache(Container $container)
     {
-        $app->singleton('cache.store', function ($app) {
+        $container->singleton('cache.store', function ($container) {
-            return new CacheRepository($app->make('cache.filestore'));
+            return new CacheRepository($container->make('cache.filestore'));
         });
-        $app->alias('cache.store', Repository::class);
+        $container->alias('cache.store', Repository::class);
 
-        $app->singleton('cache.filestore', function () {
+        $container->singleton('cache.filestore', function () {
             return new FileStore(new Filesystem, $this->paths->storage.'/cache');
         });
-        $app->alias('cache.filestore', Store::class);
+        $container->alias('cache.filestore', Store::class);
     }
 }

src/Foundation/UninstalledSite.php

@@ -16,6 +16,7 @@ use Flarum\Settings\SettingsRepositoryInterface;
 use Flarum\Settings\UninstalledSettingsRepository;
 use Flarum\User\SessionServiceProvider;
 use Illuminate\Config\Repository as ConfigRepository;
+use Illuminate\Contracts\Container\Container;
 use Illuminate\Contracts\Events\Dispatcher;
 use Illuminate\Filesystem\FilesystemServiceProvider;
 use Illuminate\Validation\ValidationServiceProvider;
@@ -51,18 +52,17 @@ class UninstalledSite implements SiteInterface
         );
     }
 
-    private function bootLaravel(): Application
+    private function bootLaravel(): Container
     {
-        $laravel = new Application($this->paths->base, $this->paths->public);
+        $container = new \Illuminate\Container\Container;
+        $laravel = new Application($container, $this->paths);
 
-        $laravel->useStoragePath($this->paths->storage);
+        $container->instance('env', 'production');
-        $laravel->useVendorPath($this->paths->vendor);
+        $container->instance('flarum.config', []);
+        $container->instance('flarum.debug', $laravel->inDebugMode());
+        $container->instance('config', $config = $this->getIlluminateConfig());
 
-        $laravel->instance('env', 'production');
+        $this->registerLogger($container);
-        $laravel->instance('flarum.config', []);
-        $laravel->instance('config', $config = $this->getIlluminateConfig());
-
-        $this->registerLogger($laravel);
 
         $laravel->register(ErrorServiceProvider::class);
         $laravel->register(LocaleServiceProvider::class);
@@ -94,7 +94,7 @@ class UninstalledSite implements SiteInterface
 
         $laravel->boot();
 
-        return $laravel;
+        return $container;
     }
 
     /**
@@ -114,13 +114,13 @@ class UninstalledSite implements SiteInterface
         ]);
     }
 
-    private function registerLogger(Application $app)
+    private function registerLogger(Container $container)
     {
         $logPath = $this->paths->storage.'/logs/flarum-installer.log';
         $handler = new StreamHandler($logPath, Logger::DEBUG);
         $handler->setFormatter(new LineFormatter(null, null, true, true));
 
-        $app->instance('log', new Logger('Flarum Installer', [$handler]));
+        $container->instance('log', new Logger('Flarum Installer', [$handler]));
-        $app->alias('log', LoggerInterface::class);
+        $container->alias('log', LoggerInterface::class);
     }
 }

src/Frontend/FrontendServiceProvider.php

@@ -24,11 +24,11 @@ class FrontendServiceProvider extends AbstractServiceProvider
                 $assets = new Assets(
                     $name,
                     $this->app->make('filesystem')->disk('flarum-assets'),
-                    $this->app->storagePath()
+                    $this->app['flarum']->storagePath()
                 );
 
                 $assets->setLessImportDirs([
-                    $this->app->vendorPath().'/components/font-awesome/less' => ''
+                    $this->app['flarum']->vendorPath().'/components/font-awesome/less' => ''
                 ]);
 
                 $assets->css([$this, 'addBaseCss']);

src/Http/Server.php

@@ -73,6 +73,8 @@ class Server
             Flarum encountered a boot error ($type)<br />
             <b>$message</b><br />
             thrown in <b>$file</b> on line <b>$line</b>
+
+<pre>$error</pre>
 ERROR;
     }
 }

src/Http/UrlGenerator.php

@@ -18,6 +18,11 @@ class UrlGenerator
      */
     protected $routes = [];
 
+    /**
+     * @var Application
+     */
+    protected $app;
+
     /**
      * @param Application $app
      */

src/Locale/LocaleServiceProvider.php

@@ -51,7 +51,7 @@ class LocaleServiceProvider extends AbstractServiceProvider
                 $this->getDefaultLocale(),
                 null,
                 $this->getCacheDir(),
-                $this->app->inDebugMode()
+                $this->app['flarum.debug']
             );
 
             $translator->setFallbackLocales(['en']);
@@ -73,6 +73,6 @@ class LocaleServiceProvider extends AbstractServiceProvider
 
     private function getCacheDir(): string
     {
-        return $this->app->storagePath().'/locale';
+        return $this->app['flarum']->storagePath().'/locale';
     }
 }

tests/integration/TestCase.php

@@ -11,6 +11,7 @@ namespace Flarum\Tests\integration;
 
 use Flarum\Extend\ExtenderInterface;
 use Flarum\Foundation\InstalledSite;
+use Flarum\Foundation\Paths;
 use Illuminate\Database\ConnectionInterface;
 use Laminas\Diactoros\ServerRequest;
 use Psr\Http\Message\ResponseInterface;
@@ -33,12 +34,12 @@ abstract class TestCase extends \PHPUnit\Framework\TestCase
     {
         if (is_null($this->app)) {
             $site = new InstalledSite(
-                [
+                new Paths([
                     'base' => __DIR__.'/tmp',
                     'vendor' => __DIR__.'/../../vendor',
                     'public' => __DIR__.'/tmp/public',
                     'storage' => __DIR__.'/tmp/storage',
-                ],
+                ]),
                 include __DIR__.'/tmp/config.php'
             );