X-Git-Url: http://nitlanguage.org

diff --git a/lib/app/data_store.nit b/lib/app/data_store.nit
index afb6a1d..ebebe83 100644
--- a/lib/app/data_store.nit
+++ b/lib/app/data_store.nit
@@ -22,6 +22,11 @@ module data_store
 import app_base
 import serialization
 
+# Platform variations
+import linux::data_store is conditional(linux)
+import android::data_store is conditional(android)
+import ios::data_store is conditional(ios)
+
 redef class App
 	# Services to store and load data
 	fun data_store: DataStore is abstract
@@ -34,5 +39,5 @@ interface DataStore
 	fun [](key: String): nullable Object is abstract
 
 	# Store `value` at `key`
-	fun []=(key: String, value: Serializable) is abstract
+	fun []=(key: String, value: nullable Serializable) is abstract
 end