feat(server): Use system packages for execution

llama_stack/cli/stack/run.py

@@ -55,7 +55,6 @@ def _add_arguments(self):
             "--env",
             action="append",
             help="Environment variables to pass to the server in KEY=VALUE format. Can be specified multiple times.",
-            default=[],
             metavar="KEY=VALUE",
         )
         self.parser.add_argument(
@@ -73,7 +72,6 @@ def _add_arguments(self):
             type=str,
             help="Image Type used during the build. This can be either conda or container or venv.",
             choices=["conda", "container", "venv"],
-            default="conda",
         )
 
     def _run_stack_run_cmd(self, args: argparse.Namespace) -> None:
@@ -131,20 +129,42 @@ def _run_stack_run_cmd(self, args: argparse.Namespace) -> None:
         except AttributeError as e:
             self.parser.error(f"failed to parse config file '{config_file}':\n {e}")
 
-        run_args = formulate_run_args(args.image_type, args.image_name, config, template_name)
-
-        run_args.extend([str(config_file), str(args.port)])
-        if args.disable_ipv6:
-            run_args.append("--disable-ipv6")
-
-        for env_var in args.env:
-            if "=" not in env_var:
-                self.parser.error(f"Environment variable '{env_var}' must be in KEY=VALUE format")
-            key, value = env_var.split("=", 1)  # split on first = only
-            if not key:
-                self.parser.error(f"Environment variable '{env_var}' has empty key")
-            run_args.extend(["--env", f"{key}={value}"])
-
-        if args.tls_keyfile and args.tls_certfile:
-            run_args.extend(["--tls-keyfile", args.tls_keyfile, "--tls-certfile", args.tls_certfile])
-        run_with_pty(run_args)
+        # If neither image type nor image name is provided, assume the server should be run directly
+        # using the current environment packages.
+        if not args.image_type and not args.image_name:
+            logger.info("No image type or image name provided. Assuming environment packages.")
+            from llama_stack.distribution.server.server import main as server_main
+
+            # Build the server args from the current args passed to the CLI
+            server_args = argparse.Namespace()
+            for arg in vars(args):
+                # If this is a function, avoid passing it
+                # "args" contains:
+                # func=<bound method StackRun._run_stack_run_cmd of <llama_stack.cli.stack.run.StackRun object at 0x10484b010>>
+                if callable(getattr(args, arg)):
+                    continue
+                setattr(server_args, arg, getattr(args, arg))
+
+            # Run the server
+            server_main(server_args)
+        else:
+            run_args = formulate_run_args(args.image_type, args.image_name, config, template_name)
+
+            run_args.extend([str(config_file), str(args.port)])
+            if args.disable_ipv6:
+                run_args.append("--disable-ipv6")
+
+            if args.env:
+                for env_var in args.env:
+                    if "=" not in env_var:
+                        self.parser.error(f"Environment variable '{env_var}' must be in KEY=VALUE format")
+                        return
+                    key, value = env_var.split("=", 1)  # split on first = only
+                    if not key:
+                        self.parser.error(f"Environment variable '{env_var}' has empty key")
+                        return
+                    run_args.extend(["--env", f"{key}={value}"])
+
+            if args.tls_keyfile and args.tls_certfile:
+                run_args.extend(["--tls-keyfile", args.tls_keyfile, "--tls-certfile", args.tls_certfile])
+            run_with_pty(run_args)

llama_stack/distribution/server/server.py

@@ -312,13 +312,18 @@ async def send_version_error(send):
         return await self.app(scope, receive, send)
 
 
-def main():
-    logcat.init()
-
+def main(args: argparse.Namespace = None):
     """Start the LlamaStack server."""
+    logcat.init()
     parser = argparse.ArgumentParser(description="Start the LlamaStack server.")
     parser.add_argument(
         "--yaml-config",
+        dest="config",
+        help="(Deprecated) Path to YAML configuration file - use --config instead",
+    )
+    parser.add_argument(
+        "--config",
+        dest="config",
         help="Path to YAML configuration file",
     )
     parser.add_argument(
@@ -348,7 +353,19 @@ def main():
         required="--tls-keyfile" in sys.argv,
     )
 
-    args = parser.parse_args()
+    # Determine whether the server args are being passed by the "run" command, if this is the case
+    # the args will be passed as a Namespace object to the main function, otherwise they will be
+    # parsed from the command line
+    if args is None:
+        args = parser.parse_args()
+
+    # Check for deprecated argument usage
+    if "--yaml-config" in sys.argv:
+        warnings.warn(
+            "The '--yaml-config' argument is deprecated and will be removed in a future version. Use '--config' instead.",
+            DeprecationWarning,
+            stacklevel=2,
+        )
 
     if args.env:
         for env_pair in args.env:
@@ -360,9 +377,9 @@ def main():
                 logcat.error("server", f"Error: {str(e)}")
                 sys.exit(1)
 
-    if args.yaml_config:
+    if args.config:
         # if the user provided a config file, use it, even if template was specified
-        config_file = Path(args.yaml_config)
+        config_file = Path(args.config)
         if not config_file.exists():
             raise ValueError(f"Config file {config_file} does not exist")
         logcat.info("server", f"Using config file: {config_file}")