jdx/mise · error · eyre::Report

deps run command cannot be empty

Error message

deps run command cannot be empty

What it means

`DepsCommand::from_string` (src/deps/mod.rs:124) wraps a provider's run string with the configured inline shell (`sh -c`-style) so pipes and `&&` work. An empty or whitespace-only command would spawn a shell that does nothing, so it is rejected up front with `run.trim().is_empty()`.

Source

Thrown at src/deps/mod.rs:136

    pub env: BTreeMap<String, String>,
    /// Working directory (defaults to project root)
    pub cwd: Option<PathBuf>,
    /// Human-readable description of what this command does
    pub description: String,
}

impl DepsCommand {
    /// Create a DepsCommand from a run string like "npm install"
    ///
    /// Wraps the command with `sh -c` (matching task execution behavior)
    /// so shell features like pipes, redirects, and `&&` work.
    pub fn from_string(
        run: &str,
        project_root: &Path,
        config: &rule::DepsProviderConfig,
    ) -> Result<Self> {
        if run.trim().is_empty() {
            bail!("deps run command cannot be empty");
        }

        let shell = Settings::get().default_inline_shell()?;
        let (program, shell_args) = shell.split_first().ok_or_else(|| {
            eyre::eyre!("default inline shell is empty; check unix_default_inline_shell_args / windows_default_inline_shell_args")
        })?;

        let mut args: Vec<String> = shell_args.to_vec();
        args.push(run.to_string());

        Ok(Self {
            program: program.to_string(),
            args,
            env: config.env.clone(),
            cwd: config
                .dir
                .as_ref()
                .map(|d| project_root.join(d))

View on GitHub (pinned to 9dcfcaa0dc)

Solutions

1. Set a real command in the provider's run field
2. If the run string is templated, verify every variable it references is defined and non-empty in that context
3. Delete the provider block entirely if it was scaffolded but unused

Example fix

# before
[deps.providers.mytool]
run = ""

# after
[deps.providers.mytool]
run = "mytool install"

# reject empty run commands before mise loads them
import tomllib, sys
cfg = tomllib.load(open("mise.toml", "rb"))
for pid, p in cfg.get("deps", {}).get("providers", {}).items():
    if not str(p.get("run", "")).strip():
        sys.exit(f"provider {pid} has an empty run command")

When it happens

Trigger: A deps provider config whose run string is empty or only whitespace — `run = ""`, `run = " "` — or a templated run string whose variables expand to nothing when the config is resolved.

Common situations: Scaffolded/placeholder provider blocks that were never filled in; `run = "{{var}}"` with `var` unset; TOML/YAML indentation mistakes putting the command under the wrong key; commented-out runs leaving an empty string behind.

Related errors

• deps provider '{}' depends on unknown provider '{}'
• provider '{}' is inactive: {reason}
• '{}' depends on unknown '{}'
• duration must not be negative: {}
• Invalid date or duration: {s}. Expected formats: '2024-06-01

AI-assisted analysis of jdx/mise@9dcfcaa0dc (2026-08-17). Data as JSON: /api/errors/888315e0086d5733. Report an issue: GitHub.