establish installed dependency not in portfile

[db]

On 9 Oct 2017, at 11:23, Chris Jones <jonesc at hep.phy.cam.ac.uk> wrote:
> Ah right, yes.... You could always update your OS, but thats not really a fix and you might even have valid reasons for staying on such an old OS.

I stayed on 10.8 to keep a workflow, but it's now too much of a hassle to maintain. If I were to upgrade to 10.13 I probably still be building from source though, and the approximate time to build would still be useful.