I've installed qt5ct to change the theme of qt5 applications but it is not working. It keeps asking to properly set the QT_QPA_PLATFORMTHEME variable even thought I exported it in .profile, .bash_profile and .bashrc.
EDIT: It works only if I launch applications from the terminal, not when I launch them from the menu. Any idea why this is happening?
EDIT: SOLVED - Seems like Solus sources a lot of scripts in the /usr/share/defaults/etc/profile.d
There, it sources a script called 50-qt-theming.sh that sets the variable to gtk2. It seems that even thought that I export the variable after sourcing these scripts the desktop still uses the variable set in the 50-qt-theming.sh for the QT applications. Changing the value of the variable in that script solved it.