skip tests for previos TF versions

einops/layers/tensorflow.py

@@ -3,8 +3,11 @@
 unfortunately instructions on creation of TF layers change constantly,
 and changed way too many times at this point to remember what-compatible-where.
 
-So just stating layers in einops==0.7.2 were implemented
- according to official instructions for TF 2.16.
+Layers in einops==0.7.0 (and several prior versions)
+ are compatible with TF 2.13
+
+Layers in einops==0.7.1 were re-implemented
+ according to official instructions for TF 2.16
 
 """
 

tests/test_layers.py

@@ -244,6 +244,10 @@ def test_keras_layer():
         pytest.skip()
     else:
         import tensorflow as tf
+
+        if tf.__version__ < "2.16.":
+            # current implementation of layers follows new TF interface
+            pytest.skip()
         from tensorflow.keras.models import Sequential
         from tensorflow.keras.layers import Conv2D as Conv2d, Dense as Linear, ReLU
         from einops.layers.keras import Rearrange, Reduce, EinMix, keras_custom_objects