async function loadTargets() {

    const res = await fetch("/api/targets");
    const data = await res.json();

    const sys = document.getElementById("system");
    const arch = document.getElementById("arch");
    const runtime = document.getElementById("runtime");

    data.systems.forEach(s => {
        let o = document.createElement("option");
        o.value = s;
        o.text = s;
        sys.appendChild(o);
    });

    data.arches.forEach(a => {
        let o = document.createElement("option");
        o.value = a;
        o.text = a;
        arch.appendChild(o);
    });

    data.runtimes.forEach(r => {
        let o = document.createElement("option");
        o.value = r;
        o.text = r;
        runtime.appendChild(o);
    });
}