Deprecate dataset

README.md

@@ -137,8 +137,13 @@ task_ids:
 - language-modeling
 - masked-language-modeling
 paperswithcode_id: mc4
+viewer: false
 ---
 
+<div class="course-tip course-tip-orange bg-gradient-to-br dark:bg-gradient-to-r before:border-orange-500 dark:before:border-orange-800 from-orange-50 dark:from-gray-900 to-white dark:to-gray-950 border border-orange-50 text-orange-700 dark:text-gray-400">
+  <p><b>Deprecated:</b> Dataset "mc4" is deprecated and will be deleted. Use "<a href="https://huggingface.co/datasets/allenai/c4">allenai/c4</a>" instead.</p>
+</div>
+
 # Dataset Card for mC4
 
 ## Table of Contents

mc4.py

@@ -3,6 +3,7 @@
 
 import gzip
 import json
+import warnings
 
 import datasets
 
@@ -280,6 +281,10 @@ class Mc4(datasets.GeneratorBasedBuilder):
     BUILDER_CONFIG_CLASS = Mc4Config
 
     def _info(self):
+        warnings.warn(
+            "Dataset 'mc4' is deprecated and will be deleted. Use 'allenai/c4' instead.",
+            FutureWarning,
+        )
         return datasets.DatasetInfo(
             description=_DESCRIPTION,
             features=datasets.Features(