The transition to OpenCV 4.1.2 has started, but unfortunately saga FTBFS with it as reported in #922593. To keep the package building successfully in unstable the opencv build dependencies have been removed. If a future SAGA 7.3.x release fixes the issue, that change can be reverted to reinstate the OpenCV support. Kind Regards, Bas -- GPG Key ID: 4096R/6750F10AE88D4AF1 Fingerprint: 8182 DE41 7056 408D 6146 50D1 6750 F10A E88D 4AF1