note gaal (Here be plugs.) <p>When there are several providers of the functionality that have compatible APIs, you can use [cpan://Best]. With modules that just export functions, you simply replace the use line: <p><c> use YAML; # This module is slow! # So if you want to try a faster one first: use Best qw(YAML::Syck YAML); print Dump({ some => 'hash' }); # Dumping provided by Best Possible YAML module </c> <p>There's knobs you can use to rewire stuff as in your is_deeply example; and a <c>which</c> function is provided so you can get the name of the module that was actually loaded to write factories with. <p><c> use Best qw(OOPishProv AnotherOOPyProv::Serving::As::Fallback); my $obj = Best->which("OOPishProv")->new; </c> <p>If you're out for less syntax, you might like to try the possibly too-magical [cpan://Class::TransparentFactory]. 614574 614574