# HG changeset patch
# User Manuel Jacob <m...@manueljacob.de>
# Date 1590779246 -7200
# Fri May 29 21:07:26 2020 +0200
# Node ID c8a697e466dec7726cf0e5d30dafcc37f13196f0
# Parent 45c87d05a2ba00d32181c94bf56d52f48f9c9f02
# EXP-Topic require_modern_ssl
setup: require a Python version with modern SSL features
This increases the minimum security baseline of Mercurial and enables us to
remove compatibility code for supporting older, less secure Python versions.
diff --git a/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -83,6 +83,20 @@ Python {py} detected.
printf(error, file=sys.stderr)
sys.exit(1)
+import ssl
+try:
+ ssl.SSLContext
+except AttributeError:
+ error = """
+The `ssl` module does not have the `SSLContext` class. This indicates an old
+Python version which does not support modern security features (which were
+added to Python 2.7 as part of "PEP 466"). Please make sure you have installed
+at least Python 2.7.9 or a Python version with backports of these security
+features.
+"""
+ printf(error, file=sys.stderr)
+ sys.exit(1)
+
if sys.version_info[0] >= 3:
DYLIB_SUFFIX = sysconfig.get_config_vars()['EXT_SUFFIX']
else:
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