Piping tokio child stdout to another tokio process' stdin

[jepers]

I know using std::process::Command it's possible to take one child process' output and pipe it into another but when trying to do the same in using tokio::process::Command I get the trait std::convert::From<tokio::process::ChildStdout> is not implemented for std::process::Stdio.

Reading this it seems it's not possible?

Here's a simplified example:

let mut ls_command = Command::new("ls");
ls_command.stdout(Stdio::piped());
let ls_child = ls_command
    .spawn()
    .expect("Failed to spawn ls command");
let output = Command::new("grep")
    .arg("hello")
    .stdin(
        ls_child
            .stdout
            .take()
            .expect("Failed to take stdout from ls command"),
    )
    .output();

[alice]

Huh, I didn't know that was possible in std. It does seem that the behaviour is indeed not exposed in Tokio.