fix cross compile

shell.nix

@@ -1,6 +1,6 @@
 with (import <nixpkgs> {});
 mkShell {
-  nativeBuildInputs = [
+  buildInputs = [
     pkgsCross.muslpi.stdenv.cc
     pkgsCross.muslpi.sqlite
   ];

src/bin/refresh_json.rs

@@ -1,8 +1,9 @@
-use std::{error::Error, fs};
+use std::{env, error::Error, fs};
 
 static WEEKLY: &'static str = include_str!("../../events_weekly.json");
 
 fn main() {
+	let args = env::args().skip(1).collect::<Vec<_>>();
 	let url = "http://nixos.fritz.box:12783/custom/event_alerts";
 
 	if let Ok(json) = get_json(url) {
@@ -11,7 +12,11 @@ fn main() {
 		buf += "\"events\": ";
 		buf += &json;
 		buf += ",";
+		if args.len() >= 1 && args[0] == "--no-weekly" {
+			buf += r#""weekly": []"#;
+		} else {
 			buf += WEEKLY;
+		}
 		buf += "}";
 		fs::write("events.json", buf.as_bytes()).unwrap();
 	}