From the release note
* Updated dependencies:
* Python 3.6
* GTK+ 3.20
* GLib 2.48
* GtkSourceView 4.0
* pygobject 3.30
* pycairo 1.15
And also when running it just stop at pygobject version check
As a side note, this port should not have been updated to this version to begin with. This software follows the even-odd split, where odd versions are developmental releases.
(In reply to Charlie Li from comment #1)
This should be documented in the Makefile
I reverted the update in r552342, and also merged that to quarterly, so meld should now work again.
I did have to bump PORTEPOCH for this, obviously.