diff --git a/Sources/OpenSwiftUI/App/App/AppGraph.swift b/Sources/OpenSwiftUI/App/App/AppGraph.swift
index 02d631417..20898bdfd 100644
--- a/Sources/OpenSwiftUI/App/App/AppGraph.swift
+++ b/Sources/OpenSwiftUI/App/App/AppGraph.swift
@@ -95,6 +95,32 @@ package final class AppGraph: GraphHost {
 
     // MARK: - Override Methods
 
+    override package func instantiateOutputs() {
+        data.updateSeed &+= 1
+        let outputs = rootSubgraph.apply {
+            var inputs = _SceneInputs(
+                base: graphInputs,
+                preferences: .init(hostKeys: data.$hostPreferenceKeys)
+            )
+            inputs.base.environment = Attribute(
+                RootEnvironment(
+                    environment: graphInputs.environment,
+                    phase: $rootScenePhase,
+                    sceneKeyboardShorts: $sceneKeyboardShortcuts
+                )
+            )
+            inputs.preferences.add(HostPreferencesKey.self)
+            inputs.preferences.add(SceneList.Key.self)
+            inputs.preferences.add(CommandsList.Key.self)
+            inputs.base.focusedValues = $focusedValues
+            inputs.base.focusStore = $focusStore
+            return makeRootScene(inputs)
+        }
+        $rootSceneList = outputs.preferences.sceneList
+        $rootCommandsList = outputs.preferences.commandsList
+        hostPreferenceValues = WeakAttribute(outputs.preferences.hostPreferenceValues)
+    }
+
     // MARK: - Profile related
 
     func startProfilingIfNecessary() {
@@ -167,3 +193,15 @@ private struct AppBodyAccessor<Application>: BodyAccessor where Application: App
         }
     }
 }
+
+// MARK: - RootEnvironment
+
+private struct RootEnvironment: Rule {
+    @Attribute var environment: EnvironmentValues
+    @Attribute var phase: ScenePhase
+    @Attribute var sceneKeyboardShorts: [SceneID: KeyboardShortcut]
+
+    var value: EnvironmentValues {
+        environment
+    }
+}
diff --git a/Sources/OpenSwiftUI/App/Window/WindowGroup.swift b/Sources/OpenSwiftUI/App/Window/WindowGroup.swift
index 058b4492a..b7082e668 100644
--- a/Sources/OpenSwiftUI/App/Window/WindowGroup.swift
+++ b/Sources/OpenSwiftUI/App/Window/WindowGroup.swift
@@ -290,7 +290,6 @@ struct WindowSceneList<Attributes>: PrimitiveScene where Attributes: WindowScene
         scene: _GraphValue<Self>,
         inputs: _SceneInputs
     ) -> _SceneOutputs {
-        _openSwiftUIBaseClassAbstractMethod()
         let configuration = scene[offset: { .of(&$0.configuration) }].value
         var outputs = _SceneOutputs()
         outputs.preferences
diff --git a/Sources/OpenSwiftUI/Event/Focus/FocusStore.swift b/Sources/OpenSwiftUI/Event/Focus/FocusStore.swift
index 3d3cd597b..396a2ed1b 100644
--- a/Sources/OpenSwiftUI/Event/Focus/FocusStore.swift
+++ b/Sources/OpenSwiftUI/Event/Focus/FocusStore.swift
@@ -1,3 +1,4 @@
+import OpenAttributeGraphShims
 @_spi(ForOpenSwiftUIOnly)
 import OpenSwiftUICore
 
@@ -27,3 +28,23 @@ extension FocusStore {
         
     }
 }
+
+struct FocusStoreInputKey: ViewInput {
+    static var defaultValue: OptionalAttribute<FocusStore> {
+        .init()
+    }
+}
+
+extension _ViewInputs {
+    var focusStore: Attribute<FocusStore>? {
+        get { base.focusStore }
+        set { base.focusStore = newValue }
+    }
+}
+
+extension _GraphInputs {
+    var focusStore: Attribute<FocusStore>? {
+        get { self[FocusStoreInputKey.self].attribute }
+        set { self[FocusStoreInputKey.self] = .init(newValue) }
+    }
+}
diff --git a/Sources/OpenSwiftUI/Event/Focus/FocusedValueKey.swift b/Sources/OpenSwiftUI/Event/Focus/FocusedValueKey.swift
index 7d205243c..51f43c3b1 100644
--- a/Sources/OpenSwiftUI/Event/Focus/FocusedValueKey.swift
+++ b/Sources/OpenSwiftUI/Event/Focus/FocusedValueKey.swift
@@ -107,3 +107,17 @@ struct FocusedValuesInputKey: ViewInput {
         .init()
     }
 }
+
+extension _ViewInputs {
+    var focusedValues: Attribute<FocusedValues>? {
+        get { base.focusedValues }
+        set { base.focusedValues = newValue }
+    }
+}
+
+extension _GraphInputs {
+    var focusedValues: Attribute<FocusedValues>? {
+        get { self[FocusedValuesInputKey.self].attribute }
+        set { self[FocusedValuesInputKey.self] = .init(newValue) }
+    }
+}
diff --git a/Sources/OpenSwiftUICore/Data/Preference/PreferenceBridge.swift b/Sources/OpenSwiftUICore/Data/Preference/PreferenceBridge.swift
index 9a9d94778..126235c94 100644
--- a/Sources/OpenSwiftUICore/Data/Preference/PreferenceBridge.swift
+++ b/Sources/OpenSwiftUICore/Data/Preference/PreferenceBridge.swift
@@ -59,10 +59,10 @@ package final class PreferenceBridge {
                 let combiner = Attribute(
                     HostPreferencesCombiner(
                         keys: inputs.preferences.hostKeys,
-                        values: outputs[HostPreferencesKey.self]
+                        values: outputs.hostPreferenceValues
                     )
                 )
-                outputs[HostPreferencesKey.self] = combiner
+                outputs.hostPreferenceValues = combiner
                 _hostPreferenceKeys = WeakAttribute(inputs.preferences.hostKeys)
                 _hostPreferencesCombiner = WeakAttribute(combiner)
             } else {
diff --git a/Sources/OpenSwiftUICore/Data/Preference/PreferenceKey.swift b/Sources/OpenSwiftUICore/Data/Preference/PreferenceKey.swift
index d68c8e575..cd86ca146 100644
--- a/Sources/OpenSwiftUICore/Data/Preference/PreferenceKey.swift
+++ b/Sources/OpenSwiftUICore/Data/Preference/PreferenceKey.swift
@@ -6,6 +6,8 @@
 //  Status: Complete
 //  ID: 3D8838A231BB2CC7FC00E7880D8B2FC4 (SwiftUICore)
 
+package import OpenAttributeGraphShims
+
 // MARK: - PreferenceKey
 
 /// A named value produced by a view.
@@ -160,6 +162,13 @@ package struct HostPreferencesKey: PreferenceKey {
     }
 }
 
+extension PreferencesOutputs {
+    package var hostPreferenceValues: Attribute<PreferenceValues>? {
+        get { self[HostPreferencesKey.self] }
+        set { self[HostPreferencesKey.self] = newValue }
+    }
+}
+
 // MARK: - HostPreferenceKey
 
 @_spi(Private)
diff --git a/Sources/OpenSwiftUICore/Data/Preference/PreferenceTransformModifier.swift b/Sources/OpenSwiftUICore/Data/Preference/PreferenceTransformModifier.swift
index 9d584ca9c..cca780e6d 100644
--- a/Sources/OpenSwiftUICore/Data/Preference/PreferenceTransformModifier.swift
+++ b/Sources/OpenSwiftUICore/Data/Preference/PreferenceTransformModifier.swift
@@ -86,11 +86,11 @@ extension PreferencesOutputs {
         }
         if K._isReadableByHost,
            inputs.contains(HostPreferencesKey.self) {
-            self[HostPreferencesKey.self] = Attribute(
+            hostPreferenceValues = Attribute(
                 HostPreferencesTransform<K>(
                     transform: attribute ?? transform(),
                     keys: inputs.hostKeys,
-                    childValues: .init(self[HostPreferencesKey.self]),
+                    childValues: .init(hostPreferenceValues),
                     keyRequested: false,
                     wasEmpty: false,
                     delta: 0,
diff --git a/Sources/OpenSwiftUICore/Data/Preference/PreferenceWritingModifier.swift b/Sources/OpenSwiftUICore/Data/Preference/PreferenceWritingModifier.swift
index 1ca35a237..f10b22a91 100644
--- a/Sources/OpenSwiftUICore/Data/Preference/PreferenceWritingModifier.swift
+++ b/Sources/OpenSwiftUICore/Data/Preference/PreferenceWritingModifier.swift
@@ -97,11 +97,11 @@ extension PreferencesOutputs {
         }
         if K._isReadableByHost,
            inputs.contains(HostPreferencesKey.self) {
-            self[HostPreferencesKey.self] = Attribute(
+            hostPreferenceValues = Attribute(
                 HostPreferencesWriter<K>(
                     keyValue: attribute ?? value(),
                     keys: inputs.hostKeys,
-                    childValues: .init(self[HostPreferencesKey.self]),
+                    childValues: .init(hostPreferenceValues),
                     keyRequested: false,
                     wasEmpty: false,
                     delta: 0,
diff --git a/Sources/OpenSwiftUICore/View/Graph/ViewGraph.swift b/Sources/OpenSwiftUICore/View/Graph/ViewGraph.swift
index 358037803..7ecb00270 100644
--- a/Sources/OpenSwiftUICore/View/Graph/ViewGraph.swift
+++ b/Sources/OpenSwiftUICore/View/Graph/ViewGraph.swift
@@ -274,7 +274,7 @@ package final class ViewGraph: GraphHost {
         if requestedOutputs.contains(.layout) {
             _rootLayoutComputer = WeakAttribute(outputs.layoutComputer)
         }
-        hostPreferenceValues = WeakAttribute(outputs.preferences[HostPreferencesKey.self])
+        hostPreferenceValues = WeakAttribute(outputs.preferences.hostPreferenceValues)
         makePreferenceOutlets(outputs: outputs)
     }