Or depending on how familiar you are with Homebrew you could create your own formula and host it in a "tap": https://github.com/Homebrew/brew/blob/master/share/doc/homebrew/How-to-Create-and-Maintain-a-Tap.md

On Sun, Aug 21, 2016 at 11:22 PM, Alan Schmitt <alan.schmitt@polytechnique.org> wrote:
On 2016-08-21 06:57, Alex Dunn <dunn.alex@gmail.com> writes:

> GTK+3 will just have to be installed manually, outside of Homebrew, right?

I guess it’s the only way. Thank you for the suggestion, I’ll give it a
try once I have figured the webkitgtk issue.

Alan

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