Everything I can find online about QtRuby uses Qt 4, but the current version of Qt is 5. Is this simply a matter of documentation not catching up with reality, where Qt 5 would work just fine with QtRuby?
If you assert that this is the case (that Qt5 is unsupported) then please backup your assertion with evidence.
Qtruby and korundum are not maintained for years now. To get a maintained version of qtruby, install qtbindings as ruby gem.
Qtbindings home page: https://github.com/ryanmelt/qtbindings/
Also see https://github.com/ryanmelt/qtbindings/issues/131 for a discussion about supporting Qt5.
Ruby-qml is a QML / Qt Quick wrapper for Ruby. It provides bindings between QML and Ruby and enables you to use Qt5 Quick-based GUI from Ruby.
The bindings provided by Ruby-QML are much leaner in comparison to QtRuby. In particular there is no direct access to the Qt classes' methods. That might first seem to be a a disadvantage when coming from QtRuby.
When learning to use use Ruby-QML, it turns out quickly that the advantages outweigh the limitations:
QtRuby only supports Qt 4 for the time being. Hopefully, it will change soon, but this seems to be the reality at the time of writing this.
The last release happened two and half a years ago as the time of writing this. That can be seen here:
http://rubyforge.org/projects/korundum/
As you can see, that is also a Qt 4 release as its name says: qt4-qtruby-2.2.0
.
That information is also getting from their outdated KDE Wiki in here:
http://techbase.kde.org/Development/Languages/Ruby
If this is still not enough proof, you can look into the code yourself to see it is not actually binding Qt 5 classes added in that major Qt variant.
Here is a quick ls
after decompressing the latest tarball:
lpapp ~/Downloads/qt4-qtruby-2.2.0/qtruby/src/lib $ ls
CMakeLists.txt Qt Qt.rb Qt3.rb Qt4.rb
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