Function brew_linked_binary

src/upgrade.rs:749–760

The stable Homebrew-managed binary path: the opt symlink reported by `brew --prefix tracedecay`, which survives keg-version bumps and cleanup (unlike the keg-versioned Cellar path the running process resolves to).

()

/// `brew --prefix tracedecay`, which survives keg-version bumps and cleanup
/// (unlike the keg-versioned Cellar path the running process resolves to).
fn brew_linked_binary() -> Option<PathBuf> {
    let output = std::process::Command::new("brew")
        .args(["--prefix", "tracedecay"])
        .output()
        .ok()?;
    if !output.status.success() {
        return None;
    }
    let prefix = String::from_utf8(output.stdout).ok()?;
    let binary = Path::new(prefix.trim()).join("bin").join("tracedecay");
    binary.exists().then_some(binary)
}

/// Extracts the version from `tracedecay --version` output
/// (e.g. `tracedecay 5.0.1` → `5.0.1`).