feat: warn when no local turbo found

crates/turborepo-lib/src/shim.rs

@@ -28,6 +28,8 @@
 
 use crate::{cli, get_version, spawn_child, tracing::TurboSubscriber};
 
+const TURBO_GLOBAL_WARNING_DISABLED: &str = "TURBO_GLOBAL_WARNING_DISABLED";
+
 #[derive(Debug, Error, Diagnostic)]
 #[error("cannot have multiple `--cwd` flags in command")]
 #[diagnostic(code(turbo::shim::multiple_cwd))]
@@ -595,14 +597,25 @@
             spawn_local_turbo(&repo_state, turbo_state, shim_args)
         }
     } else {
-        try_check_for_updates(&shim_args, get_version());
+        let version = get_version();
+        try_check_for_updates(&shim_args, version);
         // cli::run checks for this env var, rather than an arg, so that we can support
         // calling old versions without passing unknown flags.
         env::set_var(
             cli::INVOCATION_DIR_ENV_VAR,
             shim_args.invocation_dir.as_path(),
         );
         debug!("Running command as global turbo");
+        let should_warn_on_global =
+            env::var(TURBO_GLOBAL_WARNING_DISABLED).map_or(true, |disable| {
+                match disable.as_str() {
+                    "1" | "true" => false,
+                    _ => true,
+                }
+            });
+        if should_warn_on_global {
+            eprintln!("No locally installed `turbo` found. Using version: {version}.");
+        }
         Ok(cli::run(Some(repo_state), subscriber, ui)?)
     }
 }

turborepo-tests/helpers/setup_integration_test.sh

@@ -36,6 +36,7 @@ else
 fi
 
 export TURBO_TELEMETRY_MESSAGE_DISABLED=1
+export TURBO_GLOBAL_WARNING_DISABLED=1
 export TURBO=${MONOREPO_ROOT_DIR}/target/debug/turbo${EXT}
 
 # Undo the set -eo pipefail at the top of this script