There's a closed pull request on the void-packages repository

[WIP] qt: remove
https://github.com/void-linux/void-packages/pull/14520

Description:
there are also a few python*-PyQt4-* packages in the binary repos that have to be removed.
And python3-pyside*

qucs: no eta for qt5 support
luxmark: has alpha release with qt5 support https://github.com/LuxCoreRender/LuxMark/releases @thypon ?
avogadro: avogadro2 seems to be in development https://github.com/openchemistry/avogadrolibs

depends on #14521