Disable lightLayers conditionaly to RenderPipelineSettings

com.unity.render-pipelines.high-definition/HDRP/Editor/Lighting/HDLightEditor.cs

                 EditorGUILayout.Space();
                 EditorGUILayout.LabelField("Additional Settings", EditorStyles.boldLabel);
                 EditorGUI.indentLevel++;
-                m_AdditionalLightData.lightLayers.intValue = Convert.ToInt32(EditorGUILayout.EnumFlagsField(s_Styles.lightLayer, (LightLayerEnum)m_AdditionalLightData.lightLayers.intValue));
+                var hdPipeline = RenderPipelineManager.currentPipeline as HDRenderPipeline;
+                using (new SettingsDisableScope(hdPipeline.asset.renderPipelineSettings.supportLightLayers))
+                {
+                    m_AdditionalLightData.lightLayers.intValue = Convert.ToInt32(EditorGUILayout.EnumFlagsField(s_Styles.lightLayer, (LightLayerEnum)m_AdditionalLightData.lightLayers.intValue));
+                }
                 EditorGUILayout.PropertyField(m_AdditionalLightData.affectDiffuse, s_Styles.affectDiffuse);
                 EditorGUILayout.PropertyField(m_AdditionalLightData.affectSpecular, s_Styles.affectSpecular);
                 if (m_LightShape != LightShape.Directional)

com.unity.render-pipelines.high-definition/HDRP/Editor/Lighting/Reflection/HDProbeUI.Drawers.cs

 using System.Collections.Generic;
 using UnityEditorInternal;
 using UnityEngine;
+using UnityEngine.Experimental.Rendering;
 using UnityEngine.Experimental.Rendering.HDPipeline;
 using UnityEngine.Rendering;
 
 
         protected static void Drawer_SectionCustomSettings(HDProbeUI s, SerializedHDProbe d, Editor o)
         {
-            d.lightLayers.intValue = Convert.ToInt32(EditorGUILayout.EnumFlagsField(lightLayersContent, (LightLayerEnum)d.lightLayers.intValue));
+            var hdPipeline = RenderPipelineManager.currentPipeline as HDRenderPipeline;
+            using (new SettingsDisableScope(hdPipeline.asset.renderPipelineSettings.supportLightLayers))
+            {
+                d.lightLayers.intValue = Convert.ToInt32(EditorGUILayout.EnumFlagsField(lightLayersContent, (LightLayerEnum)d.lightLayers.intValue));
+            }
 
             EditorGUILayout.PropertyField(d.weight, weightContent);
 

com.unity.render-pipelines.core/CoreRP/Editor/SettingsDisableScope.cs

+using System;
+using UnityEngine;
+
+namespace UnityEditor.Experimental.Rendering
+{
+    public class SettingsDisableScope : IDisposable
+    {
+        bool enable;
+
+        public SettingsDisableScope(bool enable)
+        {
+            this.enable = enable;
+            if (!enable)
+                GUI.enabled = false;
+        }
+
+        public void Dispose()
+        {
+            if (!enable)
+                GUI.enabled = true;
+        }
+    }
+}

com.unity.render-pipelines.core/CoreRP/Editor/SettingsDisableScope.cs.meta

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