On Jan 4, 2016, at 5:13 PM, René J.V. Bertin <rjvber...@gmail.com> wrote:
> You're aware that the full path to the lockfile is already printed, almost as 
> if to allow people who know what they're doing to copy/paste it into a 
> different terminal window and remove it.

you're assuming a lot there.

> An option to ignore the lock has the benefit of documentation, and can be 
> coupled to a confirmation request.

we don't do interactive interrogation generally for port actions (I don't think 
the GSOC that added it for interactive sessions landed in a release, but I 
could be wrong).

Usability research says that that sort of thing ("You're about to shoot 
yourself in the foot, do you wish to continue? Yes/No") doesn't actually work 
to protect users. 

> I suppose it would also be possible to add additional locking code to protect 
> certain operation that should always be exclusive (like install, de/activate).

please do.

-- 
Daniel J. Luke                                                                  
 
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