AeroThemePlasma does not launch and instead throws this error: Dependency '/usr/lib/qt/qml/QtGraphicalEffects/qmldir' is missing

Question

I installed Ubuntu 20.04 and updated it to 22.04 and wanted to install a Windows 7 theme onto it, so I installed KDE Plasma and tried to run the AeroThemePlasma installer. I installed all of the dependencies, but it then failed giving me the error: Dependency '/usr/lib/qt/qml/QtGraphicalEffects/qmldir' is missing.

   KDE Plasma version: 5.24.7
   KDE Frameworks Version: 5.92.0
   Qt Version: 5.15.3
   Kernel Version: 5.15.0-112-generic (64-bit)
   Graphics Platform: X11
   CPU: Intel Core i3-1115g4
   Integrated Graphics: Mesa Intel UHD Graphics

Answer 1

This may be a cause of Ubuntu being unsupported by the script, as stated in the installation instructions. However, I am getting the same error despite running on a fully-updated arch installation.

This error arises during the for-loop of line 148 in the installation script, specifically at the point where it runs command -v /usr/lib/qt/qml/QtGraphicalEffects/qmldir and gets a return code != 0. This means that qmldir is not an executable file OR simply doesn't exist (in which case it is not any sort of file).

In my case, it was that the file was not marked as executable, and I suspect your case is the same.

to fix this, you can just run the following

sudo chmod +x /usr/lib/qt/qml/QtGraphicalEffects/qmldir

and may have to do the same for the next dependency as well.

However, this does sort of raise the questions of why it is expected to be executable by the installation script to begin with...