Improve warning message for _WouldIgnoreField

pypa · May 18, 2022 · 97b4f2d · 97b4f2d
1 parent 89173d2
commit 97b4f2d
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/setuptools/config/_apply_pyprojecttoml.py b/setuptools/config/_apply_pyprojecttoml.py
@@ -341,7 +341,10 @@ def _acessor(obj):
 
 
 class _WouldIgnoreField(UserWarning):
-    """Inform users that ``pyproject.toml`` would overwrite previously defined metadata:
+    """Inform users that ``pyproject.toml`` would overwrite previous metadata."""
+
+    MESSAGE = """\
+    {field!r} defined outside of `pyproject.toml` would be ignored.
     !!\n\n
     ##########################################################################
     # configuration would be ignored/result in error due to `pyproject.toml` #
@@ -369,5 +372,4 @@ class _WouldIgnoreField(UserWarning):
     @classmethod
     def message(cls, field, value):
         from inspect import cleandoc
-        msg = "\n".join(cls.__doc__.splitlines()[1:])
-        return cleandoc(msg.format(field=field, value=value))
+        return cleandoc(cls.MESSAGE.format(field=field, value=value))