date format ignores locale when timezone not set

[nullobsi]

When the timezone is not set, the locale, either defined or system locale is ignored and it always uses mon, tue, thu, etc for the week name. I think this is because when the timezone is set, Waybar uses the fmt library.

Waybar/src/modules/clock.cpp

Lines 98 to 105 in 81f0bcb

	if (!is_timezone_fixed()) {
	// As date dep is not fully compatible, prefer fmt
	tzset();
	auto localtime = fmt::localtime(std::chrono::system_clock::to_time_t(now));
	text = fmt::format(format_, localtime);
	} else {
	text = fmt::format(format_, wtime);
	}

Is there some way to get Waybar to use the system time and the locale at the same time?