an autogenerated dummy bar=1.0/installed
" apt list bar --verbose
+# test for dpkg ^rc state
+insertinstalledpackage 'conf-only' 'i386' '1.0' '' '' 'deinstall ok config-files'
+testequal "Listing...
+conf-only/now 1.0 i386 [residual-config]" apt list conf-only
+