from xonsh.platform import ON_DARWIN # Nix integration if ON_DARWIN: nix_daemon_path = p"/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh" if nix_daemon_path.exists(): source-bash @(nix_daemon_path) nix_darwin_path = p"/etc/static/bashrc" if nix_darwin_path.exists(): source-bash @(nix_darwin_path)