first = build_kernel(123)
repeat = build_kernel(123)
changed = build_kernel(124)

print(f"backend: {keras.backend.backend()}")
print(f"same seed matches: {np.array_equal(first, repeat)}")
print(f"different seed changes weights: {not np.array_equal(first, changed)}")
print(f"first weight with seed 123: {first[0, 0]:.6f}")
print(f"first weight with seed 124: {changed[0, 0]:.6f}")