I installed NixOS with KDE Plasma on my laptop a couple of months ago and since then I have not been able to get the NixOS Manual in the Application Launcher to launch correctly. For some reason, it launches in KWrite.
Is it supposed to launch in a web browser? Because I think it is simply an .html file.
How do I fix this?
Just an F.Y.I. the default application set on my machine for .html files is Firefox.
The fix for me was this from comment 10 in that link above:
enable hidden files in dolphin then go to your home dir (/home/username) then go to hidden .config dir in there you need to find file named mimeapps.list edit it, add this string (x-scheme-handler/file=org.kde.dolphin.desktop;) to all sub strings for example: