Function git_source_date_epoch

crates/xtask/src/xtask.rs:421–432

Return the timestamp of the latest git commit in seconds since the Unix epoch.

(dir: &Utf8Path)

/// Return the timestamp of the latest git commit in seconds since the Unix epoch.
fn git_source_date_epoch(dir: &Utf8Path) -> Result<u64> {
    let o = Command::new("git")
        .args(["log", "-1", "--pretty=%ct"])
        .current_dir(dir)
        .output()?;
    if !o.status.success() {
        anyhow::bail!("git exited with an error: {:?}", o);
    }
    let buf = String::from_utf8(o.stdout).context("Failed to parse git log output")?;
    let r = buf.trim().parse()?;
    Ok(r)
}

/// When using cargo-vendor-filterer --format=tar, the config generated has a bogus source
/// directory. This edits it to refer to vendor/ as a stable relative reference.