Always draw uninstalled packages as enabled

package_manager/__init__.py

@@ -478,6 +478,7 @@ class RepositoryProperty(bpy.types.PropertyGroup):
 class PACKAGE_UL_repositories(bpy.types.UIList):
     def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
         layout.alignment='LEFT'
+        layout.prop(item, "enabled", text="")
         if len(item.name) == 0:
             layout.label(item['url'])
         else:
@@ -723,7 +724,8 @@ class USERPREF_PT_packages(bpy.types.Panel):
                 row1 = layout.row(align=True)
                 row1.label(pkg.name)
 
-                metacol.enabled = row1.enabled = pkg.enabled
+                if metapkg.installed:
+                    metacol.enabled = row1.enabled = pkg.enabled
 
                 if pkg.description:
                     row = metacol.row()