setup: problems with local install

[Ken Brown]

On 3/6/2018 10:18 AM, Jon Turney wrote:
> (I also note we have also have another 'erase an element from a vector 
> while we are iterating over it' here, so that needs fixing, as well)

I think this one might be OK.  If I'm not mistaken, 
pkg.versions.erase(i++) passes a copy of i to erase, and then increments 
i before erase() has done its work.  But I'm no expert on this.

Ken