xonsh: migrate to /etc/xonsh/xonshrc

Changed files
+2 -2
nixos
modules
programs
+2 -2
nixos/modules/programs/xonsh.nix
···
config = mkIf cfg.enable {
-
environment.etc.xonshrc.text = ''
-
# /etc/xonshrc: DO NOT EDIT -- this file has been generated automatically.
+
environment.etc."xonsh/xonshrc".text = ''
+
# /etc/xonsh/xonshrc: DO NOT EDIT -- this file has been generated automatically.
if not ''${...}.get('__NIXOS_SET_ENVIRONMENT_DONE'):