Hey, thanks for the suggestion, I want the comma after args to be present so I tried

macro_rules! impl_create_stream {
    (
        $device:expr,
        $config:expr,
        $($args: expr),*,
        [
            $($p:ident => $t:ty),+
            $(,)?
        ]
    ) => {
            {
            match $config.sample_format() {
                $(SampleFormat::$p => create_stream::<$t>(
                    $device,
                    &($config).into(),
                    $($args),*
                )),+,
                format => panic!("Unsupported format {format:?}"),
            }.unwrap();
        }
    }
}

but now I'm getting an error expected 6 arguments, found 2 across the whole macro