Bug#1035985: Built without GLESv2 support causing errors on machines only supporting GLES

[Erik Inkinen <erik.inkinen@gmail.com>]

Hi Lisandro,

I think I misunderstood the Qt documentation myself. It seems the
dynamic GLES support is only available on Windows, but the changes in
qt6 rendering would still minimize the requirements for rebuilt
packages.

It seems that it is only necessary to rebuild libqt6gui6 with
"-DINPUT_opengl=es2". Maybe you could make a new source package for
Qt6 Base on GLES and make it build libqt6gui6 and only it.

For reference, you can take a look at
https://github.com/cutie-shell/qt6-base/tree/feature/bookworm/gles_minimal/debian
. Note that you would need to use a different package name like
libqt6gui6-gles and it should provide and conflict with libqt6gui6.

Kind regards,
Erik Inkinen