portage-3.0.49-warn-keeptemp-keepwork-use-with-clean.patch

diff --git a/lib/portage/package/ebuild/doebuild.py b/lib/portage/package/ebuild/doebuild.py
index 8b65a78..ea09721 100644
--- a/lib/portage/package/ebuild/doebuild.py
+++ b/lib/portage/package/ebuild/doebuild.py
@@ -1006,6 +1006,10 @@ def doebuild(
         )
 
         if mydo in clean_phases:
+            for f in ["keeptemp", "keepwork"]:
+                if f in mysettings.features:
+                    writemsg(f"Warning: {f} affects how '{mydo}' behaves.\n")
+
             builddir_lock = None
             if not returnpid and "PORTAGE_BUILDDIR_LOCKED" not in mysettings:
                 builddir_lock = EbuildBuildDir(