pub unsafe extern "C" fn weld_conf_set(
    conf: weld_conf_t,
    key: *const c_char,
    value: *const c_char,
) {
    let conf = conf as *mut weld::WeldConf;
    let conf = &mut *conf;
    let key = key.to_string();
    let val = CStr::from_ptr(value).to_owned();
    conf.set(key, val);
}
Set the value of `key` to `value`.

This function is a wrapper for `WeldConf::set`.
weld-capi/src/lib.rs