I think a warning that preserved libs exist is enough with --quiet. It shouldn't output all those files every time.
I think this bug can be closed. The fix appears to have been implemented in lib/_emerge/post_emerge.py - >if vardbapi._plib_registry.hasEntries(): > if "--quiet" in myopts: > print() > print(colorize("WARN", "!!!") + " existing preserved libs found") > else: > print() > print(colorize("WARN", "!!!") + " existing preserved libs:") > display_preserved_libs(vardbapi) > print("Use " + colorize("GOOD", "emerge @preserved-rebuild") + > " to rebuild packages using these libraries")