nikivdev/code · error · anyhow::Error

dependency update command failed: {}

Error message

dependency update command failed: {}

What it means

This error is raised by `run_update_plans` (src/deps.rs:425) after a dependency-update command (e.g. a package manager invoked as an external subprocess) has exited with a non-zero status. The `f` tool already ran the command in the requested working directory; this bail simply reports that the external program itself failed, echoing the exact command line via `display_command`. It is a faithful pass-through of the external tool's failure, not an internal bug.

Source

Thrown at src/deps.rs:425

    Ok(plans)
}

fn run_update_plans(plans: &[UpdatePlan]) -> Result<()> {
    for plan in plans {
        for cmd in &plan.commands {
            println!(
                "→ [{}] {}",
                ecosystem_label(plan.target.ecosystem),
                display_command(cmd)
            );
            let status = Command::new(&cmd.program)
                .args(&cmd.args)
                .current_dir(&cmd.cwd)
                .status()
                .with_context(|| format!("failed to run {}", cmd.program))?;
            if !status.success() {
                bail!("dependency update command failed: {}", display_command(cmd));
            }
        }
    }
    Ok(())
}

fn print_update_summary(plans: &[UpdatePlan]) {
    println!("Detected {} dependency update target(s):", plans.len());
    for plan in plans {
        println!(
            "  [{}] {}",
            ecosystem_label(plan.target.ecosystem),
            plan.target.root.display()
        );
        if let UpdateTargetDetail::Js { manager, workspace } = plan.target.detail {
            println!(
                "    manager: {}{}",
                manager_program(manager),

View on GitHub (pinned to a747e741ae)

Solutions

  1. Rerun the displayed command manually in the printed working directory to see the full stderr output the tool swallowed
  2. Fix the underlying package manager issue (resolve lockfile conflicts, fix registry auth with the tool's own login command)
  3. Check network/VPN connectivity if the failure was a fetch/clone
  4. Delete generated lockfiles only as a last resort and retry the update

Example fix

// before (conflicting lockfile)
f deps update
error: dependency update command failed: cargo update --manifest-path deps/foo/Cargo.toml
// after
cd deps/foo && cargo update   # inspect real error, resolve, then rerun f deps update
Defensive patterns

Strategy: try-catch

Validate before calling

// before invoking the update flow
if !Path::new("deps/foo/Cargo.toml").exists() {
    anyhow::bail!("dependency manifest missing; run clone first");
}
if std::process::Command::new("cargo").arg("--version").output().is_err() {
    anyhow::bail!("cargo not installed");
}

Type guard

fn dependency_dir_ready(dir: &Path) -> bool {
    dir.join("Cargo.toml").is_file() || dir.join("package.json").is_file()
}

Try / catch

match run_update_with_context(ctx) {
    Err(e) if e.to_string().contains("dependency update command failed") => {
        eprintln!("update failed: {e:#}; run the printed command manually for full stderr");
    }
    Err(e) => return Err(e),
    Ok(()) => println!("dependencies updated"),
}

Prevention

When it happens

Trigger: Calling a dependency-update flow (via `run_update_with_context` -> `run_update_plans`) where any plan's command returns exit status != 0, e.g. `cargo update`, `npm update`, or `git pull` inside a dependency checkout failing due to lockfile conflicts, missing manifest files, or network errors.

Common situations: A lockfile conflict (`Cargo.toml`/`Cargo.lock` mismatch), a package registry being unreachable, an npm peer-dependency conflict, a dependency repo whose default branch moved, or the package manager requiring credentials for a private registry.

Related errors

AI-assisted analysis of nikivdev/code@a747e741ae (2026-09-01). Data as JSON: /api/errors/f9ce4a11609e2418. Report an issue: GitHub.