Defer enforcement of hatch validation

timhoffm · timhoffm · commit d2bed51fd4a5 · 2021-11-10T22:02:40.000+01:00
We want to wait until an official API is available to define custom hatches. One can currently add custom patches via monkeypatching, which would be prevented by the hatch validation: #20690 (comment)
diff --git a/lib/matplotlib/hatch.py b/lib/matplotlib/hatch.py
@@ -188,6 +188,7 @@ def _validate_hatch_pattern(hatch):
             invalids = ''.join(sorted(invalids))
             _api.warn_deprecated(
                 '3.4',
+                removal='3.7',  # one release after custom hatches (#20690)
                 message=f'hatch must consist of a string of "{valid}" or '
                         'None, but found the following invalid values '
                         f'"{invalids}". Passing invalid values is deprecated '
