Can it?:
# urpmi trinity-gtk3-tqt-engine
To satisfy dependencies, the following packages are going to be installed:
  Package                        Version      Release       Arch
(medium "Core Release")
  cmake                          3.19.2       2.mga8        x86_64
  cmake-rpm-macros               8            6.mga8        noarch
[...]
  trinity-tdelibs-devel          14.1.0       1.mga8        x86_64
(medium "trinity-noarch")
  trinity-tde-cmake              14.1.0       1.mga8        noarch
341MB of additional disk space will be used.
72MB of packages will be retrieved.
Proceed with the installation of the 132 packages? (Y/n) n

Hello Felix,

I think this is because this RPM package contains files ending with '.so' and '.la' extensions.
When this happens, the rpmbuild command automatically adds dependencies to development packages.
The proper way to avoid this is to create a separate '-devel' package containing just these files.

What happens if you manually delete the following files:

/opt/trinity/lib64/libtqtcairo.la
/opt/trinity/lib64/libtqtcairo.so
/usr/lib64/gtk-3.0/3.0.0/theming-engines/libtdegtk.la
/usr/lib64/gtk-3.0/3.0.0/theming-engines/libtdegtk.so


Does the gtk3-tqt engine still work ?

François