Hi Philip and other UI developers. Thanks for adding the 5.5f3 UI code to BitBucket, but there’s currently a build break due to the missing file: UnityEngine.UI/EventSystem/InputModules/BaseInput.cs
The file is referenced by the 5.5f3 project, shown here:
https://bitbucket.org/Unity-Technologies/ui/commits/297538b49d72#LUnityEngine.UI/UnityEngine.UI.csprojT77
Line 77: