Retain case in setup.cfg during sdist. Fixes #2773.

jaraco · jaraco · commit 2fdeb12fa5c2 · 2021-09-08T21:17:56.000-04:00
diff --git a/changelog.d/2773.misc.rst b/changelog.d/2773.misc.rst
@@ -0,0 +1 @@
+Retain case in setup.cfg during sdist.
diff --git a/setuptools/command/setopt.py b/setuptools/command/setopt.py
@@ -39,6 +39,7 @@ def edit_config(filename, settings, dry_run=False):
     """
     log.debug("Reading configuration from %s", filename)
     opts = configparser.RawConfigParser()
+    opts.optionxform = lambda x: x
     opts.read([filename])
     for section, options in settings.items():
         if options is None:
