Qt5 applications not working any more (missing wayland-egl platform plugin)

[mzanetti]

With the default instructions how to use this, Qt5 applications won't work any more...

By default, they'll bail out saying that they are configured to load the wayland-egl platform plugin which isn't pulled by default. However, even adding "qtwayland" to stage-packages won't fix this. It will find the platform plugin, but then fail to connect to wayland (no surprise there, running a X11 installation - 20.04).

So the only way to fix this for me so far is to add

environment:
  DISABLE_WAYLAND: 1

This seems like a hack but gets me around this for most environments I hope...