Browser Development • Re: Linux Pale Moon with Qt toolkit

What I worry about with Qt is that it has fairly quick turnover/deprecation; there tend to be a lot of breaking changes between Qt versions. While that's fine with native UI programs, it becomes more problematic for something as large and complex as XUL interaction in our code.

That is a valid concern. I think gtk3 will outlive us all (I'm almost 50). The thing about gtk3 is that it is stable. You can compile for gtk3 and it will blend in any gtk3 environment. Desktops such as Cinnamon, XFCE and MATE are a long way from getting ported to gtk4 - if they ever will be.

The way I see it desktop Linux is fracturing. On the one hand you have Gnome (Wayland + gtk4) and KDE (soon Wayland only) with users that expect native Wayland applications. On the other hand you have "legacy" (gtk3) desktops and window managers that run on X11.

Nevertheless it is impressive that a Qt6 port exists. But if a Qt application is compiled against Qt 6.10 how will it look in a distro that is using Qt 6.8? Would it still follow your system-wide Qt theme?