xdg-settings set default-web-browser (emoji picker at the end)
I'd suggest upon install to show a list of browser apps capable of handling url mimetypes so the user be able to choose, or even further suggest to install known browsers.
In my case i needed to have xdg-settings set default-web-browser thorium-browser.desktop
set'up on .bashrc
or exec inside the custom.conf
script..
With xdg-settings get default-web-browser
we get the current default browser set for xdg-settings.