Usage of Gtk on windows needs a warning

[SimonDanisch]

After the second time wasting quite a bit of time to debug why everything is suddenly sluggish, until I noticed that some unexpected third party library was loading Gtk, I come to the conclusion that we really need this warning.

[giordano]

I think this should be fixed in #447, if I remember correctly by https://github.com/JuliaGraphics/Gtk.jl/pull/447/files#diff-8c2b506e7179e52e816713686d731068 in particular

[SimonDanisch]

That'd be awesome! Not really a reason against merging this, I guess ;)
Once #447 lands and removes the problem we can get rid of the warning!

[SimonDanisch]

Oh, bad news Btw...From all I can see, I'm using #447, so doesn't seem fixed...

[davidanthoff]

Yes, very much in favor of merging this, I've been bitten too many times by this!

[jonathanBieler]

I'm fine with merging this.

[tknopp]

I am not so happy with the warning, but its the peoples choice who use windows. @jonathanBieler are you using Windows? Did the fix of @vtjnash really did not fix the issue? On OSX it did.

The plan now is as follows:

• Lets put upper bounds on all depending packages and make a release
• Then merge the JLL branch
• Wait for all depending JLL branches (Cairo!) to be released
• Release a new release for Julia >= 1.3

[giordano]

Maybe merge Cairo jll pull request before the one for gtk?

[tknopp]

Thats what I said with the third point, no?

[tknopp]

I mean for 2/3 it does not really matter to much, what the order is.

[jonathanBieler]

I haven't used Gtk on windows for a while (I could give it a try) but as I understand the underlying issue has never been tackled (or maybe I missed it). #325 #181

[tknopp]

The "fix" is in the JLL branch, see this:
https://github.com/JuliaGraphics/Gtk.jl/pull/447/files#diff-8c2b506e7179e52e816713686d731068L353

The communication is within the binarybuilder channel of slack. This was done by Jameson and Elliot.

[tknopp]

note that I needed dropping this as it conflicted badly with the JLL branch that has priority. The function where this was integrated was not present in the JLL branch :-)