Merge pull request #9627 from jameshfisher/patch-1

Point user to `pip debug --verbose` to debug incompatible wheel

Author: pfmoore

src/pip/_internal/index/package_finder.py

@@ -194,7 +194,8 @@ def evaluate_link(self, link):
                     # simplify troubleshooting compatibility issues.
                     file_tags = wheel.get_formatted_file_tags()
                     reason = (
-                        "none of the wheel's tags match: {}".format(
+                        "none of the wheel's tags ({}) are compatible "
+                        "(run pip debug --verbose to show compatible tags)".format(
                             ', '.join(file_tags)
                         )
                     )

tests/unit/test_index.py

@@ -170,7 +170,9 @@ def test_evaluate_link__incompatible_wheel(self):
         link = Link('https://example.com/sample-1.0-py2.py3-none-any.whl')
         actual = evaluator.evaluate_link(link)
         expected = (
-            False, "none of the wheel's tags match: py2-none-any, py3-none-any"
+            False,
+            "none of the wheel's tags (py2-none-any, py3-none-any) are compatible "
+            "(run pip debug --verbose to show compatible tags)"
         )
         assert actual == expected