On Mar 1, 2014, at 06:48, René J.V. Bertin <[email protected]> wrote:

> Given that I do not myself have any direct requirements on perl versions, 
> shouldn't I just have removed all references to specific perl5 
> versions/variants, or bumped all +perl5_12 to +perl5_16? 

I recommend that.

> If so, can I rectify that WITHOUT having to start everything from scratch?

I’d try “sudo port uninstall installed and name:^p5.12”. If nothing depends on 
them, that should succeed. If that fails, it’ll tell you what port requires it. 
You can then investigate whether that port offers variants for newer versions 
of perl. Since it was only recently that the default perl was changed from 5.12 
to 5.16, there are probably still many ports that depend unconditionally on 
5.12 and have yet to be updated to 5.16. If you find such ports, please file 
tickets.
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