Can't set BROWSER environment variable properly

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1

Hello, everyone, I’m trying to set BROWSER env var in environment.variables, but apps continue to open links with Chromium, though it claims that it’s not browser by default when opens them. xdg-settings get default-web-browser also outputs librewolf.desktop. Any hints?

Environment module:

{ pkgs, lib, ... }: {
  environment.variables = {
    EDITOR = "vim";
    RANGER_LOAD_DEFAULT_RC = "FALSE";
    BROWSER = "${lib.getExe pkgs.librewolf}";
    QT_QPA_PLATFORMTHEME = "qt5ct";
    GSETTINGS_BACKEND = "dconf";
  };
}
2

You will have to reload your profile (log out and back in). Anyway, I don’t think applications will read this variable anymore, so the xdg-setttings are the way to go. I personally don’t have this variable set anywhere.
Then again, there are some obscure applications that will just run chrome on the shell and assume it is installed.

3

Actually, that mostly is firefox since xdg-open is hard-coded to use firefox as a fallback (or was in the past, seems it’s become more generic but firefox still has far higher priority by default than chrome).

xdg-open reads $BROWSER, and is ultimately what most applications use to decide default associations not dictated by mime types (and even then is often used as a substitute since the script handles them). It also has other methods that take precedence which depend on your DE/whether flatpak is installed, though, so YMMV depending on what you use.

It’s a fairly simple script, if the browser still doesn’t work for you, you can just read it to figure out what’s going wrong.