Why is Qt6 reliant on GTK3?

[borffis]

qt-6-base relies on gtk3. Why?
If an answer explicated is elsewhere (as a page on Qt's website), I wouldn't mind a URL thereto.

 

[SirDice]

It's being pulled in due to this in devel/qt6-base:

USE_GNOME=	cairo gdkpixbuf2 glib20 gtk30 pango

I can't tell you why though, but the port Makefile specifically pulls it in.

 

[cracauer@]

If you want to find out, remove gtk30 from that line, or the entire line, and compile on a fresh system.

 

[SirDice]

It's likely for compatibility with GTK themes. That was the case with QT5, so I suspect it's the same for QT6.

 

[Phishfry]

If you want to find out, remove gtk30 from that line, or the entire line, and compile on a fresh system.

Or if you use packages try and delete gtk3 it will tell you what depends on it.

pkg delete -n gtk3
-n is dry run

 

[jbo@]

It's likely for compatibility with GTK themes. That was the case with QT5, so I suspect it's the same for QT6.

AFAIK it not just that but also for platform native features. For example QFileDialog will use Gtk.FileChooser under the hood (if native & available).
The same goes for QColorPicker and so on.

 

[cracauer@]

Or if you use packages try and delete gtk3 it will tell you what depends on it.

pkg delete -n gtk3
-n is dry run

Well, it is possible that deleting that dependency in ports and compiling them will actually work. The ./configure script (or equivalent) could just skip some functionality and mosy on.