fix(packager): exit with error if config not found

.changes/error-out-if-no-config.md

@@ -0,0 +1,5 @@
+---
+"cargo-packager": patch
+---
+
+Error out if we cannot find a configuration file.

crates/packager/src/cli/mod.rs

@@ -135,8 +135,7 @@ fn run_cli(cli: Cli) -> Result<()> {
     };
 
     if configs.is_empty() {
-        tracing::debug!("Couldn't detect a valid configuration file or all configurations are disabled! Nothing to do here.");
-        return Ok(());
+        return Err(crate::Error::NoConfig);
     }
 
     let cli_out_dir = cli.out_dir.as_ref().map(dunce::canonicalize).transpose()?;

crates/packager/src/error.rs

@@ -32,6 +32,9 @@ pub enum Error {
     /// Target triple environment error
     #[error("Unable to determine target-environment")]
     Environment,
+    /// No config file found.
+    #[error("Couldn't detect a valid configuration file or all configurations are disabled.")]
+    NoConfig,
     /// I/O errors.
     #[error(transparent)]
     Io(#[from] std::io::Error),