1 files changed, 13 insertions, 3 deletions
diff --git a/src/buildable.rs b/src/buildable.rs
index 95382e7..37bfc3c 100644
--- a/src/buildable.rs
+++ b/src/buildable.rs
@@ -1,6 +1,6 @@
-use crate::ValueBuilder;
-use crate::CollectionBuilder;
 use crate::Backend;
+use crate::CollectionBuilder;
+use crate::ValueBuilder;
 
 // A value that can be built interactively, using a Backend
 pub trait BuildableValue: Sized {
@@ -164,7 +164,6 @@ impl BuildableValue for String {
 }
 
 
-
 pub trait BuildableCollection {
     fn builder<E, B>(backend: B) -> Box<dyn CollectionBuilder<Output = Self, Error = E>>
         where E: Sized,
@@ -183,3 +182,14 @@ impl<T> BuildableCollection for Vec<T>
     }
 }
 
+impl<T> BuildableCollection for Option<T>
+    where T: 'static + BuildableValue + Sized
+{
+    fn builder<E, B>(backend: B) -> Box<dyn CollectionBuilder<Output = Option<T>, Error = E>>
+        where E: Sized,
+              B: Backend<Error = E>
+    {
+        backend.option_builder()
+    }
+}
+