speed up import

eval_protocol/__init__.py

@@ -8,32 +8,17 @@
 tool-augmented models using self-contained task bundles.
 """
 
+from importlib import import_module
+from typing import Any
 import warnings
 
-from eval_protocol.adapters.braintrust import reward_fn_to_scorer, scorer_to_reward_fn
-
+# Lightweight imports (no heavy optional dependencies)
+from .integrations.braintrust import reward_fn_to_scorer, scorer_to_reward_fn
 from .auth import get_fireworks_account_id, get_fireworks_api_key
 from .common_utils import load_jsonl
 from .config import RewardKitConfig, get_config, load_config
-from .mcp_env import (
-    AnthropicPolicy,
-    FireworksPolicy,
-    LiteLLMPolicy,
-    OpenAIPolicy,
-    make,
-    rollout,
-    test_mcp,
-)
-
-# Try to import FireworksPolicy if available
-try:
-    from .mcp_env import FireworksPolicy
 
-    _FIREWORKS_AVAILABLE = True
-except (ImportError, AttributeError):
-    _FIREWORKS_AVAILABLE = False
 # Import submodules to make them available via eval_protocol.rewards, etc.
-from . import mcp, rewards
 from .models import EvaluateResult, Message, MetricResult
 from .playback_policy import PlaybackPolicyBase
 from .resources import create_llm_resource
@@ -42,6 +27,7 @@
 
 warnings.filterwarnings("default", category=DeprecationWarning, module="eval_protocol")
 
+# Public API (static exports only; dynamic MCP symbols are provided via __getattr__)
 __all__ = [
     # Core interfaces
     "Message",
@@ -60,14 +46,6 @@
     "RewardKitConfig",
     # Utilities
     "load_jsonl",
-    # MCP Environment API
-    "make",
-    "rollout",
-    "LiteLLMPolicy",
-    "AnthropicPolicy",
-    "FireworksPolicy",
-    "OpenAIPolicy",
-    "test_mcp",
     # Playback functionality
     "PlaybackPolicyBase",
     # Resource management
@@ -77,6 +55,30 @@
     "mcp",
 ]
 
+
+def __getattr__(name: str) -> Any:
+    """Lazily import heavy MCP environment symbols to speed up package import.
+
+    This defers importing modules that depend on optional or heavy dependencies
+    (e.g., vendored tau2, OpenAI clients) until they are actually used.
+    """
+    if name in {
+        "make",
+        "rollout",
+        "LiteLLMPolicy",
+        "AnthropicPolicy",
+        "FireworksPolicy",
+        "OpenAIPolicy",
+        "test_mcp",
+    }:
+        m = import_module(".mcp_env", __name__)
+        return getattr(m, name)
+    if name in {"mcp", "rewards"}:
+        # Lazy-load subpackages for attribute access like eval_protocol.mcp
+        return import_module(f".{name}", __name__)
+    raise AttributeError(f"module '{__name__}' has no attribute '{name}'")
+
+
 from . import _version
 
 __version__ = _version.get_versions()["version"]

eval_protocol/adapters/__init__.py

@@ -10,38 +10,24 @@
 - TRL integration (legacy)
 """
 
-# Conditional imports based on available dependencies
-try:
-    from .langfuse import LangfuseAdapter, create_langfuse_adapter
-    __all__ = ["LangfuseAdapter", "create_langfuse_adapter"]
-except ImportError:
-    __all__ = []
+from importlib import import_module
+from typing import Any
 
-try:
-    from .huggingface import (
-        HuggingFaceAdapter, 
-        create_huggingface_adapter,
-        create_gsm8k_adapter,
-        create_math_adapter,
-    )
-    __all__.extend([
-        "HuggingFaceAdapter", 
-        "create_huggingface_adapter",
-        "create_gsm8k_adapter",
-        "create_math_adapter",
-    ])
-except ImportError:
-    pass
+__all__ = []
 
-# Legacy adapters (always available)
-try:
-    from .braintrust import reward_fn_to_scorer, scorer_to_reward_fn
-    __all__.extend(["scorer_to_reward_fn", "reward_fn_to_scorer"])
-except ImportError:
-    pass
 
-try:
-    from .trl import create_trl_adapter
-    __all__.extend(["create_trl_adapter"])
-except ImportError:
-    pass
+def __getattr__(name: str) -> Any:
+    # Lazy import optional adapters to avoid import-time side effects and heavy deps
+    if name in {"LangfuseAdapter", "create_langfuse_adapter"}:
+        m = import_module(".langfuse", __name__)
+        return getattr(m, name)
+    if name in {"HuggingFaceAdapter", "create_huggingface_adapter", "create_gsm8k_adapter", "create_math_adapter"}:
+        m = import_module(".huggingface", __name__)
+        return getattr(m, name)
+    if name in {"reward_fn_to_scorer", "scorer_to_reward_fn"}:
+        m = import_module(".braintrust", __name__)
+        return getattr(m, name)
+    if name in {"create_trl_adapter"}:
+        m = import_module(".trl", __name__)
+        return getattr(m, name)
+    raise AttributeError(f"module '{__name__}' has no attribute '{name}'")

vendor/tau2/utils/llm_utils.py

@@ -7,6 +7,7 @@
 from litellm.caching.caching import Cache
 from litellm.main import ModelResponse, Usage
 from loguru import logger
+import os
 
 from vendor.tau2.config import (
     DEFAULT_LLM_CACHE_TYPE,
@@ -70,9 +71,8 @@
 
 
 ALLOW_SONNET_THINKING = False
-
-if not ALLOW_SONNET_THINKING:
-    logger.warning("Sonnet thinking is disabled")
+if os.getenv("TAU2_VERBOSE") == "1" and not ALLOW_SONNET_THINKING:
+    logger.info("Sonnet thinking is disabled")
 
 
 def _parse_ft_model_name(model: str) -> str:

vendor/tau2/utils/utils.py

@@ -9,8 +9,10 @@
 from dotenv import load_dotenv
 from loguru import logger
 
+_TAU2_VERBOSE = os.getenv("TAU2_VERBOSE") == "1"
+
 res = load_dotenv()
-if not res:
+if not res and _TAU2_VERBOSE:
     logger.warning("No .env file found")
 
 # Try to get data directory from environment variable first
@@ -19,15 +21,17 @@
 if DATA_DIR_ENV:
     # Use environment variable if set
     DATA_DIR = Path(DATA_DIR_ENV)
-    logger.info(f"Using data directory from environment: {DATA_DIR}")
+    if _TAU2_VERBOSE:
+        logger.info(f"Using data directory from environment: {DATA_DIR}")
 else:
     # Fallback to vendored tau2 directory
     SOURCE_DIR = Path(__file__).parents[1]  # vendor/tau2/
     DATA_DIR = SOURCE_DIR / "data"
-    logger.info(f"Using data directory from vendored tau2: {DATA_DIR}")
+    if _TAU2_VERBOSE:
+        logger.info(f"Using data directory from vendored tau2: {DATA_DIR}")
 
 # Check if data directory exists and is accessible
-if not DATA_DIR.exists():
+if not DATA_DIR.exists() and _TAU2_VERBOSE:
     logger.warning(f"Data directory does not exist: {DATA_DIR}")
     logger.warning(
         "Set TAU2_DATA_DIR environment variable to point to your data directory"