Merge branch 'master' into fix/1557

1 files changed, 22 insertions, 0 deletions

diff --git a/pkg_resources/py2_warn.py b/pkg_resources/py2_warn.py
new file mode 100644
index 00000000..1b151956
--- /dev/null
+++ b/pkg_resources/py2_warn.py
@@ -0,0 +1,22 @@
+import sys
+import warnings
+import textwrap
+
+
+msg = textwrap.dedent("""
+    You are running Setuptools on Python 2, which is no longer
+    supported and
+    >>> SETUPTOOLS WILL STOP WORKING <<<
+    in a subsequent release (no sooner than 2020-04-20).
+    Please ensure you are installing
+    Setuptools using pip 9.x or later or pin to `setuptools<45`
+    in your environment.
+    If you have done those things and are still encountering
+    this message, please comment in
+    https://github.com/pypa/setuptools/issues/1458
+    about the steps that led to this unsupported combination.
+    """)
+
+pre = "Setuptools will stop working on Python 2\n"
+
+sys.version_info < (3,) and warnings.warn(pre + "*" * 60 + msg + "*" * 60)