Make the HttpEnv extend the SystemEnv trait

app/HttpEnv.scala

@@ -1,9 +1,9 @@
 package lila.http
 
 import lila.system.SystemEnv
-import com.typesafe.config._
+import com.typesafe.config.Config
 
-final class HttpEnv(config: Config) {
+final class HttpEnv(c: Config) extends SystemEnv {
 
-  lazy val system = SystemEnv(config)
+  protected val config = c
 }

app/controllers/Application.scala

@@ -2,7 +2,6 @@ package controllers
 
 import lila.http._
 
-import com.typesafe.config._
 import play.api._
 import play.api.mvc._
 

system/src/main/scala/SystemEnv.scala

@@ -9,7 +9,7 @@ import ai._
 
 trait SystemEnv {
 
-  val config: Config
+  protected val config: Config
 
   def server = new Server(
     repo = gameRepo,