Thanks very much Demi Marie.
Then this should be the correct way:
Source & Info: https://github.com/QubesOS/qubes-issues/issues/7389
Install the package qt5-qtstyleplugins with:
sudo qubes-dom0-update qt5-qtstyleplugins
then insert in /etc/environment:
-------------[Start]---------------------
QT_QPA_PLATFORMTHEME=gtk2
-------------[End]-----------------------
in dom0 terminal do:
export QT_QPA_PLATFORMTHEME=gtk2
---
finally you can check, if all changes were set & working:
[TheGardner@dom0]$ cat /etc/environment
QT_QPA_PLATFORMTHEME=gtk2
[TheGardner@dom0]$ echo $QT_QPA_PLATFORMTHEME
gtk2
[TheGardner@dom0]$ sudo dnf info qt5-qtstyleplugins
Qubes OS Repository for Dom0
1.9 MB/s | 3.0 kB 00:00
Installed Packages
Name : qt5-qtstyleplugins
Version : 5.0.0
Release : 39.fc32
Architecture : x86_64
Size : 1.2 M
Source : qt5-qtstyleplugins-5.0.0-39.fc32.src.rpm
Repository : @System
From repo : qubes-dom0-cached
Summary : Classic Qt widget styles
URL : https://github.com/qtproject/qtstyleplugins
License : LGPLv2 or GPLv2
Description : Classic Qt widget styles, including cleanlooks, motif,
plastique, qgtk.
Demi Marie Obenour schrieb am Samstag, 23. Juli 2022 um 04:07:18 UTC+2:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA512
>
> On Fri, Jul 22, 2022 at 05:45:13PM -0700, TheGardner wrote:
> > Great! It's working now with the following steps in dom0 terminal:
> >
> > Download qt5-qtstyleplugins RPM file from:
> >
> >
> https://kojipkgs.fedoraproject.org//packages/qt5-qtstyleplugins/5.0.0/39.fc32/x86_64/qt5-qtstyleplugins-5.0.0-39.fc32.x86_64.rpm
> >
> > Move it from your AppVM to dom0 with:
> >
> > qvm-run --pass-io <from_AppVM> 'cat
> > /home/user/Download/qt5-qtstyleplugins-5.0.0-39.fc32.x86_64.rpm' >
> >
> /home/<your_dom0_user>/Downloads/qt5-qtstyleplugins-5.0.0-39.fc32.x86_64.rpm
> >
> > Install the package with:
> >
> > sudo dnf install -y qt5-qtstyleplugins-5.0.0-39.fc32.x86_64.rpm
>
> This is not safe. You can do:
>
> sudo qubes-dom0-update qt5-qtstyleplugins
>
> and it will work as with any other package.
>
> That reminds me: Marek, should we set repo_gpgcheck=1 and/or
> %_pkgverify_level all in dom0, to protect against mistakes like this?
> - --
> Sincerely,
> Demi Marie Obenour (she/her/hers)
> Invisible Things Lab
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