Home manager using flakes

https://nix-community.github.io/home-manager/index.xhtml#sec-flakes-standalone

Shell

Find the shell path eg: which fish Add it to /etc/shells Change to the new shell chsh

Manual configs

Mullvadvpn

    # https://github.com/NixOS/nixpkgs/issues/121694#issuecomment-2159420924
    "/etc/sysctl.d/60-apparmor-namespace.conf".text = ''
      kernel.apparmor_restrict_unprivileged_userns=0
    '';