Correct logic for leaving SOURCES.txt when cleaning egg-info, it was inverted by mistake.

debian/changelog

+dh-python (6.20231026) UNRELEASED; urgency=medium
+
+  * Correct logic for leaving SOURCES.txt when cleaning egg-info, it was
+    inverted by mistake.
+
+ -- Stefano Rivera <stefanor@debian.org>  Tue, 07 Nov 2023 15:34:47 +0200
+
 dh-python (6.20231025) unstable; urgency=medium
 
   * Align detection of nocheck with debhelper, thanks Victor Westerhuis.

dhpython/build/base.py

@@ -185,7 +185,7 @@ class Base:
 
         dh = DebHelper(build_options())
         # Plugins that rely on repository contents to build MANIFEST
-        clean_sources_txt = set(
+        clean_sources_txt = not set(
             ('python3-setuptools-scm', 'python3-setuptools-git')
         ).intersection(set(dh.build_depends))