Add check for suitable importable distributed module

Author: sadielbartholomew

cf/__init__.py

@@ -209,6 +209,18 @@
             f"Got {dask.__version__} at {dask.__file__}"
         )
 
+try:
+    import distributed
+except ImportError as error1:
+    raise ImportError(_error0 + str(error1))
+else:
+    _minimum_vn = "2025.5.1"
+    if Version(distributed.__version__) < Version(_minimum_vn):
+        raise ValueError(
+            f"Bad distributed version: cf requires distributed>={_minimum_vn}. "
+            f"Got {distributed.__version__} at {distributed.__file__}"
+        )
+
 try:
     import scipy
 except ImportError as error1: