feat(dependencies): minimal default tag install (#3362)

tests/rl/test_actor_learner.py

@@ -20,13 +20,16 @@ import time
 
 import pytest
 import torch
+
+pytest.importorskip("datasets", reason="datasets is required (install lerobot[dataset])")
+
 from torch.multiprocessing import Event, Queue
 
 from lerobot.configs.train import TrainRLServerPipelineConfig
 from lerobot.policies.sac.configuration_sac import SACConfig
 from lerobot.utils.constants import OBS_STR
 from lerobot.utils.transition import Transition
-from tests.utils import require_package
+from tests.utils import skip_if_package_missing
 
 
 def create_test_transitions(count: int = 3) -> list[Transition]:
@@ -88,7 +91,7 @@ def cfg():
     return cfg
 
 
-@require_package("grpcio", "grpc")
+@skip_if_package_missing("grpcio", "grpc")
 @pytest.mark.timeout(10)  # force cross-platform watchdog
 def test_end_to_end_transitions_flow(cfg):
     from lerobot.rl.actor import (
@@ -150,7 +153,7 @@ def test_end_to_end_transitions_flow(cfg):
         assert_transitions_equal(transition, input_transitions[i])
 
 
-@require_package("grpcio", "grpc")
+@skip_if_package_missing("grpcio", "grpc")
 @pytest.mark.timeout(10)
 def test_end_to_end_interactions_flow(cfg):
     from lerobot.rl.actor import (
@@ -223,7 +226,7 @@ def test_end_to_end_interactions_flow(cfg):
         assert received == expected
 
 
-@require_package("grpcio", "grpc")
+@skip_if_package_missing("grpcio", "grpc")
 @pytest.mark.parametrize("data_size", ["small", "large"])
 @pytest.mark.timeout(10)
 def test_end_to_end_parameters_flow(cfg, data_size):