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fix: validate --app-config path early with clear error #77

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fix: validate --app-config path early with clear error #77

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26 changes: 26 additions & 0 deletions crates/nemo/src/main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,32 @@ fn main() -> Result<()> {
// Load NemoConfig (config.toml)
let nemo_config = NemoConfig::load_from(args.config.as_ref());

// Validate app_config path early so we fail fast with a clear message
// before any subsystem (runtime, recent-projects, etc.) tries to use it.
if let Some(ref app_config) = args.app_config {
// For relative paths, resolution against the current directory is
// implicit in Path::exists/is_file. If current_dir() fails we can
// still check the path as supplied; either way the error message
// shows the original path the user passed.
let resolved = if app_config.is_relative() {
match std::env::current_dir() {
Ok(cwd) => cwd.join(app_config),
Err(_) => app_config.clone(),
}
} else {
app_config.clone()
};

if !resolved.exists() {
eprintln!("Error: config file not found: {}", app_config.display());
std::process::exit(1);
}
if !resolved.is_file() {
eprintln!("Error: config path is not a file: {}", app_config.display());
std::process::exit(1);
}
}

// If app_config is provided via CLI/env, handle headless/validate modes
if let Some(ref app_config) = args.app_config {
if args.headless || args.validate_only {
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