fix style

* chore(installation): remove libero installation patch

* fix(ci): exclude groot for unbound deps test

.github/workflows/release.yml

@@ -83,11 +83,11 @@ jobs:
           fi
 
       - name: Remove Tags with Git dependencies
-        # TODO(Steven): Temporary patch to remove libero and pi from PyPi 0.4.0 release due to its reliance on git dependencies.
+        # TODO(Steven): Temporary patch to remove pi from PyPi 0.4.0 release due to its reliance on git dependencies.
         run: |
           echo "::info:: Checking for Git dependencies to remove from pyproject.toml..."
-          grep -E '@ git\+https|lerobot\[pi\]|lerobot\[libero\]' pyproject.toml | sed 's/^/::warning:: Removing line: /' || true
+          grep -E '@ git\+https|lerobot\[pi\]' pyproject.toml | sed 's/^/::warning:: Removing line: /' || true
-          sed -E -i '/@ git\+https|lerobot\[pi\]|lerobot\[libero\]/d' pyproject.toml
+          sed -E -i '/@ git\+https|lerobot\[pi\]/d' pyproject.toml
           echo "::info:: Git dependencies removed. Proceeding with build."
 
       - name: Install build dependencies

.github/workflows/unbound_deps_tests.yml

@@ -70,7 +70,7 @@ jobs:
           echo "Dependencies unbound:" && cat pyproject.toml
 
       - name: Install lerobot with all extras
-        run: uv sync --all-extras
+        run: uv sync --all-extras --no-extra groot # TODO(Steven): Make flash-attn optional
 
       - name: Run pytest (all extras)
         run: uv run pytest tests -vv

README.md

@@ -186,7 +186,7 @@ For a full list of optional dependencies, see:
 https://pypi.org/project/lerobot/
 
 > [!NOTE]
-> For lerobot 0.4.0, if you want to install libero or pi tags, you will have to do: `pip install "lerobot[pi,libero]@git+https://github.com/huggingface/lerobot.git"`.
+> For lerobot 0.4.0, if you want to install pi tags, you will have to do: `pip install "lerobot[pi]@git+https://github.com/huggingface/lerobot.git"`.
 >
 > This will be solved in the next patch release
 

docs/source/installation.mdx

@@ -82,7 +82,7 @@ For a full list of optional dependencies, see:
 https://pypi.org/project/lerobot/
 
 > [!NOTE]
-> For lerobot 0.4.0, if you want to install libero or pi, you will have to do: `pip install "lerobot[pi,libero]@git+https://github.com/huggingface/lerobot.git"`
+> For lerobot 0.4.0, if you want to install pi, you will have to do: `pip install "lerobot[pi]@git+https://github.com/huggingface/lerobot.git"`
 
 ### Troubleshooting
 

docs/source/libero.mdx

@@ -28,11 +28,6 @@ LIBERO is now part of our **multi-eval supported simulation**, meaning you can b
 To Install LIBERO, after following LeRobot official instructions, just do:
 `pip install -e ".[libero]"`
 
-> [!NOTE]
-> For lerobot 0.4.0, if you want to install libero tag, you will have to do: `pip install "lerobot[libero]@git+https://github.com/huggingface/lerobot.git"`.
->
-> This will be solved in the next patch release
-
 ### Single-suite evaluation
 
 Evaluate a policy on one LIBERO suite:

src/lerobot/datasets/lerobot_dataset.py

@@ -940,11 +940,26 @@ class LeRobotDataset(torch.utils.data.Dataset):
         return query_timestamps
 
     def _query_hf_dataset(self, query_indices: dict[str, list[int]]) -> dict:
-        return {
+        """
-            key: torch.stack(self.hf_dataset[q_idx][key])
+        Query dataset for indices across keys, skipping video keys.
-            for key, q_idx in query_indices.items()
+
-            if key not in self.meta.video_keys
+        Tries column-first [key][indices] for speed, falls back to row-first.
-        }
+
+        Args:
+            query_indices: Dict mapping keys to index lists to retrieve
+
+        Returns:
+            Dict with stacked tensors of queried data (video keys excluded)
+        """
+        result: dict = {}
+        for key, q_idx in query_indices.items():
+            if key in self.meta.video_keys:
+                continue
+            try:
+                result[key] = torch.stack(self.hf_dataset[key][q_idx])
+            except (KeyError, TypeError, IndexError):
+                result[key] = torch.stack(self.hf_dataset[q_idx][key])
+        return result
 
     def _query_videos(self, query_timestamps: dict[str, list[float]], ep_idx: int) -> dict[str, torch.Tensor]:
         """Note: When using data workers (e.g. DataLoader with num_workers>0), do not call this function

src/lerobot/envs/libero.py

@@ -237,9 +237,10 @@ class LiberoEnv(gym.Env):
     def reset(self, seed=None, **kwargs):
         super().reset(seed=seed)
         self._env.seed(seed)
+        raw_obs = self._env.reset()
         if self.init_states and self._init_states is not None:
             self._env.set_init_state(self._init_states[self._init_state_id])
-        raw_obs = self._env.reset()
+            raw_obs = self._env.env._get_observations()
 
         # After reset, objects may be unstable (slightly floating, intersecting, etc.).
         # Step the simulator with a no-op action for a few frames so everything settles.

src/lerobot/policies/diffusion/configuration_diffusion.py

@@ -45,7 +45,7 @@ class DiffusionConfig(PreTrainedConfig):
     Args:
         n_obs_steps: Number of environment steps worth of observations to pass to the policy (takes the
             current step and additional steps going back).
-        chunk_size: Diffusion model action prediction size as detailed in `DiffusionPolicy.select_action`.
+        horizon: Diffusion model action prediction size as detailed in `DiffusionPolicy.select_action`.
         n_action_steps: The number of action steps to run in the environment for one invocation of the policy.
             See `DiffusionPolicy.select_action` for more details.
         input_shapes: A dictionary defining the shapes of the input data for the policy. The key represents
@@ -105,7 +105,7 @@ class DiffusionConfig(PreTrainedConfig):
 
     # Inputs / output structure.
     n_obs_steps: int = 2
-    chunk_size: int = 16
+    horizon: int = 16
     n_action_steps: int = 8
 
     normalization_mapping: dict[str, NormalizationMode] = field(
@@ -118,7 +118,7 @@ class DiffusionConfig(PreTrainedConfig):
 
     # The original implementation doesn't sample frames for the last 7 steps,
     # which avoids excessive padding and leads to improved training results.
-    drop_n_last_frames: int = 7  # chunk_size - n_action_steps - n_obs_steps + 1
+    drop_n_last_frames: int = 7  # horizon - n_action_steps - n_obs_steps + 1
 
     # Architecture / modeling.
     # Vision backbone.
@@ -180,13 +180,13 @@ class DiffusionConfig(PreTrainedConfig):
                 f"Got {self.noise_scheduler_type}."
             )
 
-        # Check that the chunk size and U-Net downsampling is compatible.
+        # Check that the horizon size and U-Net downsampling is compatible.
         # U-Net downsamples by 2 with each stage.
         downsampling_factor = 2 ** len(self.down_dims)
-        if self.chunk_size % downsampling_factor != 0:
+        if self.horizon % downsampling_factor != 0:
             raise ValueError(
-                "The chunk_size should be an integer multiple of the downsampling factor (which is determined "
+                "The horizon should be an integer multiple of the downsampling factor (which is determined "
-                f"by `len(down_dims)`). Got {self.chunk_size=} and {self.down_dims=}"
+                f"by `len(down_dims)`). Got {self.horizon=} and {self.down_dims=}"
             )
 
     def get_optimizer_preset(self) -> AdamConfig:
@@ -231,7 +231,7 @@ class DiffusionConfig(PreTrainedConfig):
 
     @property
     def action_delta_indices(self) -> list:
-        return list(range(1 - self.n_obs_steps, 1 - self.n_obs_steps + self.chunk_size))
+        return list(range(1 - self.n_obs_steps, 1 - self.n_obs_steps + self.horizon))
 
     @property
     def reward_delta_indices(self) -> None:

src/lerobot/policies/diffusion/modeling_diffusion.py

@@ -99,25 +99,25 @@ class DiffusionPolicy(PreTrainedPolicy):
         return actions
 
     @torch.no_grad()
-    def select_action(self, batch: dict[str, Tensor], noise: Tensor | None = None, **kwargs) -> Tensor:
+    def select_action(self, batch: dict[str, Tensor], noise: Tensor | None = None) -> Tensor:
         """Select a single action given environment observations.
 
         This method handles caching a history of observations and an action trajectory generated by the
         underlying diffusion model. Here's how it works:
           - `n_obs_steps` steps worth of observations are cached (for the first steps, the observation is
             copied `n_obs_steps` times to fill the cache).
-          - The diffusion model generates `chunk_size` steps worth of actions.
+          - The diffusion model generates `horizon` steps worth of actions.
           - `n_action_steps` worth of actions are actually kept for execution, starting from the current step.
         Schematically this looks like:
             ----------------------------------------------------------------------------------------------
-            (legend: o = n_obs_steps, c = chunk_size, a = n_action_steps)
+            (legend: o = n_obs_steps, h = horizon, a = n_action_steps)
             |timestep            | n-o+1 | n-o+2 | ..... | n     | ..... | n+a-1 | n+a   | ..... | n-o+h |
             |observation is used | YES   | YES   | YES   | YES   | NO    | NO    | NO    | NO    | NO    |
             |action is generated | YES   | YES   | YES   | YES   | YES   | YES   | YES   | YES   | YES   |
             |action is used      | NO    | NO    | NO    | YES   | YES   | YES   | NO    | NO    | NO    |
             ----------------------------------------------------------------------------------------------
-        Note that this means we require: `n_action_steps <= chunk_size - n_obs_steps + 1`. Also, note that
+        Note that this means we require: `n_action_steps <= horizon - n_obs_steps + 1`. Also, note that
-        this period is
+        "horizon" may not the best name to describe what the variable actually means, because this period is
         actually measured from the first observation which (if `n_obs_steps` > 1) happened in the past.
         """
         # NOTE: for offline evaluation, we have action in the batch, so we need to pop it out
@@ -213,7 +213,7 @@ class DiffusionModel(nn.Module):
             noise
             if noise is not None
             else torch.randn(
-                size=(batch_size, self.config.chunk_size, self.config.action_feature.shape[0]),
+                size=(batch_size, self.config.horizon, self.config.action_feature.shape[0]),
                 dtype=dtype,
                 device=device,
                 generator=generator,
@@ -309,16 +309,16 @@ class DiffusionModel(nn.Module):
                 AND/OR
             "observation.environment_state": (B, n_obs_steps, environment_dim)
 
-            "action": (B, chunk_size, action_dim)
+            "action": (B, horizon, action_dim)
-            "action_is_pad": (B, chunk_size)
+            "action_is_pad": (B, horizon)
         }
         """
         # Input validation.
         assert set(batch).issuperset({OBS_STATE, ACTION, "action_is_pad"})
         assert OBS_IMAGES in batch or OBS_ENV_STATE in batch
         n_obs_steps = batch[OBS_STATE].shape[1]
-        chunk_size = batch[ACTION].shape[1]
+        horizon = batch[ACTION].shape[1]
-        assert chunk_size == self.config.chunk_size
+        assert horizon == self.config.horizon
         assert n_obs_steps == self.config.n_obs_steps
 
         # Encode image features and concatenate them all together along with the state vector.

src/lerobot/policies/dsrl/configuration_dsrl.py

@@ -1,242 +0,0 @@
-# !/usr/bin/env python
-
-# Copyright 2025 The HuggingFace Inc. team.
-# All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from dataclasses import dataclass, field
-
-from lerobot.configs.policies import PreTrainedConfig
-from lerobot.configs.types import NormalizationMode
-from lerobot.optim.optimizers import MultiAdamConfig
-from lerobot.utils.constants import ACTION, OBS_IMAGE, OBS_STATE
-
-
-def is_image_feature(key: str) -> bool:
-    """Check if a feature key represents an image feature.
-
-    Args:
-        key: The feature key to check
-
-    Returns:
-        True if the key represents an image feature, False otherwise
-    """
-    return key.startswith(OBS_IMAGE)
-
-
-@dataclass
-class ConcurrencyConfig:
-    """Configuration for the concurrency of the actor and learner.
-    Possible values are:
-    - "threads": Use threads for the actor and learner.
-    - "processes": Use processes for the actor and learner.
-    """
-
-    actor: str = "threads"
-    learner: str = "threads"
-
-
-@dataclass
-class ActorLearnerConfig:
-    learner_host: str = "127.0.0.1"
-    learner_port: int = 50051
-    policy_parameters_push_frequency: int = 4
-    queue_get_timeout: float = 2
-
-
-@dataclass
-class CriticNetworkConfig:
-    hidden_dims: list[int] = field(default_factory=lambda: [256, 256])
-    activate_final: bool = True
-    final_activation: str | None = None
-
-
-@dataclass
-class ActorNetworkConfig:
-    hidden_dims: list[int] = field(default_factory=lambda: [256, 256])
-    activate_final: bool = True
-    use_layer_norm: bool = True
-
-
-@dataclass
-class NoiseActorConfig:
-    """Configuration for the noise actor in DSRL.
-    The noise actor outputs noise that gets fed to the diffusion policy.
-    """
-
-    use_tanh_squash: bool = False  # Whether to bound the noise output
-    std_min: float = 1e-5
-    std_max: float = 2.0
-    init_final: float = 0.05
-
-
-@PreTrainedConfig.register_subclass("dsrl")
-@dataclass
-class DSRLConfig(PreTrainedConfig):
-    """Diffusion Steering via Reinforcement Learning (DSRL) configuration."""
-
-    # Mapping of feature types to normalization modes
-    normalization_mapping: dict[str, NormalizationMode] = field(
-        default_factory=lambda: {
-            "VISUAL": NormalizationMode.MEAN_STD,
-            "STATE": NormalizationMode.MIN_MAX,
-            "ENV": NormalizationMode.MIN_MAX,
-            "ACTION": NormalizationMode.MIN_MAX,
-        }
-    )
-
-    # Statistics for normalizing different types of inputs
-    dataset_stats: dict[str, dict[str, list[float]]] | None = field(
-        default_factory=lambda: {
-            OBS_IMAGE: {
-                "mean": [0.485, 0.456, 0.406],
-                "std": [0.229, 0.224, 0.225],
-            },
-            OBS_STATE: {
-                "min": [0.0, 0.0],
-                "max": [1.0, 1.0],
-            },
-            ACTION: {
-                "min": [0.0, 0.0, 0.0],
-                "max": [1.0, 1.0, 1.0],
-            },
-        }
-    )
-
-    # Architecture specifics
-    # Device to run the model on (e.g., "cuda", "cpu")
-    device: str = "cpu"
-    # Device to store the model on
-    storage_device: str = "cpu"
-    # Name of the vision encoder model (Set to "helper2424/resnet10" for hil serl resnet10)
-    vision_encoder_name: str | None = None
-    # Whether to freeze the vision encoder during training
-    freeze_vision_encoder: bool = True
-    # Hidden dimension size for the image encoder
-    image_encoder_hidden_dim: int = 32
-    # Whether to use a shared encoder for actor and critic
-    shared_encoder: bool = True
-    # Number of discrete actions, eg for gripper actions
-    num_discrete_actions: int | None = None
-    # Dimension of the image embedding pooling
-    image_embedding_pooling_dim: int = 8
-
-    # Name of the action policy
-    action_policy_name: str = "pi0"
-    action_policy_weights: str | None = "lerobot/pi0_base"
-
-    # Training parameter
-    # Number of steps for online training
-    online_steps: int = 1000000
-    # Capacity of the online replay buffer
-    online_buffer_capacity: int = 100000
-    # Capacity of the offline replay buffer
-    offline_buffer_capacity: int = 100000
-    # Whether to use asynchronous prefetching for the buffers
-    async_prefetch: bool = False
-    # Number of steps before learning starts
-    online_step_before_learning: int = 100
-    # Frequency of policy updates
-    policy_update_freq: int = 1
-
-    # SAC algorithm parameters
-    discount: float = 0.99
-    # Initial temperature value
-    temperature_init: float = 1.0
-    # Number of critics in the ensemble
-    num_critics: int = 2
-    # Number of subsampled critics for training
-    num_subsample_critics: int | None = None
-    # Learning rate for the critic network
-    critic_lr: float = 3e-4
-    # Learning rate for the actor network
-    actor_lr: float = 3e-4
-    # Learning rate for the temperature parameter
-    temperature_lr: float = 3e-4
-    # Weight for the critic target update
-    critic_target_update_weight: float = 0.005
-    # Update-to-data ratio for the UTD algorithm (If you want enable utd_ratio, you need to set it to >1)
-    utd_ratio: int = 1
-    # Hidden dimension size for the state encoder
-    state_encoder_hidden_dim: int = 256
-    # Dimension of the latent space
-    latent_dim: int = 256
-    # Target entropy for the SAC algorithm
-    target_entropy: float | None = None
-    # Whether to use backup entropy for the SAC algorithm
-    use_backup_entropy: bool = True
-    # Gradient clipping norm for the SAC algorithm
-    grad_clip_norm: float = 40.0
-
-    # Network configuration
-    # Configuration for the critic network architecture
-    critic_network_kwargs: CriticNetworkConfig = field(default_factory=CriticNetworkConfig)
-    # Configuration for the noise critic network architecture
-    noise_critic_network_kwargs: CriticNetworkConfig = field(default_factory=CriticNetworkConfig)
-    # Configuration for the noise actor network architecture
-    noise_actor_network_kwargs: ActorNetworkConfig = field(default_factory=ActorNetworkConfig)
-    # Configuration for the noise actor specific parameters
-    noise_actor_kwargs: NoiseActorConfig = field(default_factory=NoiseActorConfig)
-    # Configuration for actor-learner architecture
-    actor_learner_config: ActorLearnerConfig = field(default_factory=ActorLearnerConfig)
-    # Configuration for concurrency settings (you can use threads or processes for the actor and learner)
-    concurrency: ConcurrencyConfig = field(default_factory=ConcurrencyConfig)
-
-    # Optimizations
-    use_torch_compile: bool = True
-
-    def __post_init__(self):
-        super().__post_init__()
-
-    def get_optimizer_preset(self) -> MultiAdamConfig:
-        return MultiAdamConfig(
-            weight_decay=0.0,
-            optimizer_groups={
-                "critic_action": {"lr": self.critic_lr},
-                "critic_noise": {"lr": self.critic_lr},
-                "noise_actor": {"lr": self.actor_lr},
-                "temperature": {"lr": self.temperature_lr},
-            },
-        )
-
-    def get_scheduler_preset(self) -> None:
-        return None
-
-    def validate_features(self) -> None:
-        has_image = any(is_image_feature(key) for key in self.input_features)
-        has_state = OBS_STATE in self.input_features
-
-        if not (has_state or has_image):
-            raise ValueError(
-                "You must provide either 'observation.state' or an image observation (key starting with 'observation.image') in the input features"
-            )
-
-        if ACTION not in self.output_features:
-            raise ValueError("You must provide 'action' in the output features")
-
-    @property
-    def image_features(self) -> list[str]:
-        return [key for key in self.input_features if is_image_feature(key)]
-
-    @property
-    def observation_delta_indices(self) -> list:
-        return None
-
-    @property
-    def action_delta_indices(self) -> list:
-        return None
-
-    @property
-    def reward_delta_indices(self) -> None:
-        return None

src/lerobot/policies/dsrl/processor_dsrl.py

@@ -1,89 +0,0 @@
-# !/usr/bin/env python
-
-# Copyright 2025 The HuggingFace Inc. team.
-# All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-"""
-Processor for DSRL policy.
-
-DSRL uses a similar processing pipeline as SAC since it operates on
-state-action transitions. The main difference is that internally it
-also works with noise, but that's handled within the policy itself.
-"""
-
-from typing import Any
-
-import torch
-
-from lerobot.policies.dsrl.configuration_dsrl import DSRLConfig
-from lerobot.processor import (
-    AddBatchDimensionProcessorStep,
-    DeviceProcessorStep,
-    NormalizerProcessorStep,
-    PolicyAction,
-    PolicyProcessorPipeline,
-    RenameObservationsProcessorStep,
-    UnnormalizerProcessorStep,
-)
-from lerobot.processor.converters import (
-    policy_action_to_transition,
-    transition_to_policy_action,
-)
-from lerobot.utils.constants import POLICY_POSTPROCESSOR_DEFAULT_NAME, POLICY_PREPROCESSOR_DEFAULT_NAME
-
-
-def make_dsrl_pre_post_processors(
-    config: DSRLConfig,
-    dataset_stats: dict[str, dict[str, torch.Tensor]] | None = None,
-) -> tuple[
-    PolicyProcessorPipeline[dict, dict],
-    PolicyProcessorPipeline[PolicyAction, PolicyAction],
-]:
-    """Create preprocessor and postprocessor pipelines for DSRL policy.
-
-    Args:
-        config: DSRL policy configuration
-        dataset_stats: Optional dataset statistics for normalization
-
-    Returns:
-        Tuple of (preprocessor, postprocessor) pipelines
-    """
-    input_steps = [
-        RenameObservationsProcessorStep(rename_map={}),
-        AddBatchDimensionProcessorStep(),
-        DeviceProcessorStep(device=config.device),
-        NormalizerProcessorStep(
-            features={**config.input_features, **config.output_features},
-            norm_map=config.normalization_mapping,
-            stats=dataset_stats,
-        ),
-    ]
-    output_steps = [
-        UnnormalizerProcessorStep(
-            features=config.output_features, norm_map=config.normalization_mapping, stats=dataset_stats
-        ),
-        DeviceProcessorStep(device="cpu"),
-    ]
-    return (
-        PolicyProcessorPipeline[dict[str, Any], dict[str, Any]](
-            steps=input_steps,
-            name=POLICY_PREPROCESSOR_DEFAULT_NAME,
-        ),
-        PolicyProcessorPipeline[PolicyAction, PolicyAction](
-            steps=output_steps,
-            name=POLICY_POSTPROCESSOR_DEFAULT_NAME,
-            to_transition=policy_action_to_transition,
-            to_output=transition_to_policy_action,
-        ),
-    )

src/lerobot/policies/factory.py

@@ -30,7 +30,6 @@ from lerobot.envs.configs import EnvConfig
 from lerobot.envs.utils import env_to_policy_features
 from lerobot.policies.act.configuration_act import ACTConfig
 from lerobot.policies.diffusion.configuration_diffusion import DiffusionConfig
-from lerobot.policies.dsrl.configuration_dsrl import DSRLConfig
 from lerobot.policies.groot.configuration_groot import GrootConfig
 from lerobot.policies.pi0.configuration_pi0 import PI0Config
 from lerobot.policies.pi05.configuration_pi05 import PI05Config
@@ -60,7 +59,7 @@ def get_policy_class(name: str) -> type[PreTrainedPolicy]:
 
     Args:
         name: The name of the policy. Supported names are "tdmpc", "diffusion", "act",
-              "vqbet", "pi0", "pi05", "sac", "reward_classifier", "smolvla", "dsrl".
+              "vqbet", "pi0", "pi05", "sac", "reward_classifier", "smolvla".
 
     Returns:
         The policy class corresponding to the given name.
@@ -104,10 +103,6 @@ def get_policy_class(name: str) -> type[PreTrainedPolicy]:
         from lerobot.policies.smolvla.modeling_smolvla import SmolVLAPolicy
 
         return SmolVLAPolicy
-    elif name == "dsrl":
-        from lerobot.policies.dsrl.modeling_dsrl import DSRLPolicy
-
-        return DSRLPolicy
     elif name == "groot":
         from lerobot.policies.groot.modeling_groot import GrootPolicy
 
@@ -126,7 +121,7 @@ def make_policy_config(policy_type: str, **kwargs) -> PreTrainedConfig:
     Args:
         policy_type: The type of the policy. Supported types include "tdmpc",
                      "diffusion", "act", "vqbet", "pi0", "pi05", "sac", "smolvla",
-                     "reward_classifier", "dsrl".
+                     "reward_classifier".
         **kwargs: Keyword arguments to be passed to the configuration class constructor.
 
     Returns:
@@ -153,8 +148,6 @@ def make_policy_config(policy_type: str, **kwargs) -> PreTrainedConfig:
         return SmolVLAConfig(**kwargs)
     elif policy_type == "reward_classifier":
         return RewardClassifierConfig(**kwargs)
-    elif policy_type == "dsrl":
-        return DSRLConfig(**kwargs)
     elif policy_type == "groot":
         return GrootConfig(**kwargs)
     else:
@@ -328,21 +321,6 @@ def make_pre_post_processors(
             config=policy_cfg,
             dataset_stats=kwargs.get("dataset_stats"),
         )
-    elif isinstance(policy_cfg, DSRLConfig):
-        from lerobot.policies.dsrl.processor_dsrl import make_dsrl_pre_post_processors
-
-        processors = make_dsrl_pre_post_processors(
-            config=policy_cfg,
-            dataset_stats=kwargs.get("dataset_stats"),
-        )
-
-    elif isinstance(policy_cfg, GrootConfig):
-        from lerobot.policies.groot.processor_groot import make_groot_pre_post_processors
-
-        processors = make_groot_pre_post_processors(
-            config=policy_cfg,
-            dataset_stats=kwargs.get("dataset_stats"),
-        )
 
     elif isinstance(policy_cfg, GrootConfig):
         from lerobot.policies.groot.processor_groot import make_groot_pre_post_processors

src/lerobot/policies/pi0/modeling_pi0.py

@@ -1148,7 +1148,7 @@ class PI0Policy(PreTrainedPolicy):
         return self._action_queue.popleft()
 
     @torch.no_grad()
-    def predict_action_chunk(self, batch: dict[str, Tensor], noise: Tensor | None = None) -> Tensor:
+    def predict_action_chunk(self, batch: dict[str, Tensor]) -> Tensor:
         """Predict a chunk of actions given environment observations."""
         self.eval()
 
@@ -1158,7 +1158,7 @@ class PI0Policy(PreTrainedPolicy):
         state = self.prepare_state(batch)
 
         # Sample actions using the model
-        actions = self.model.sample_actions(images, img_masks, lang_tokens, lang_masks, state, noise)
+        actions = self.model.sample_actions(images, img_masks, lang_tokens, lang_masks, state)
 
         # Unpad actions to actual action dimension
         original_action_dim = self.config.output_features[ACTION].shape[0]

src/lerobot/policies/pi05/modeling_pi05.py

@@ -1120,7 +1120,7 @@ class PI05Policy(PreTrainedPolicy):
         return self._action_queue.popleft()
 
     @torch.no_grad()
-    def predict_action_chunk(self, batch: dict[str, Tensor], noise: Tensor | None = None) -> Tensor:
+    def predict_action_chunk(self, batch: dict[str, Tensor]) -> Tensor:
         """Predict a chunk of actions given environment observations."""
         self.eval()
 
@@ -1129,7 +1129,7 @@ class PI05Policy(PreTrainedPolicy):
         tokens, masks = batch[f"{OBS_LANGUAGE_TOKENS}"], batch[f"{OBS_LANGUAGE_ATTENTION_MASK}"]
 
         # Sample actions using the model (no separate state needed for PI05)
-        actions = self.model.sample_actions(images, img_masks, tokens, masks, noise)
+        actions = self.model.sample_actions(images, img_masks, tokens, masks)
 
         # Unpad actions to actual action dimension
         original_action_dim = self.config.output_features[ACTION].shape[0]

tests/envs/test_libero.py

@@ -0,0 +1,148 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+
+import numpy as np
+import pytest
+
+from lerobot.envs.factory import make_env, make_env_config
+
+# Set MuJoCo rendering backend before importing environment
+os.environ["MUJOCO_GL"] = "egl"
+
+
+def assert_observations_equal(obs1, obs2, path="", atol=1e-8):
+    """
+    Recursively compare two observations and assert they are equal.
+
+    Args:
+        obs1: First observation (dict or numpy array)
+        obs2: Second observation (dict or numpy array)
+        path: Current path in nested structure (for error messages)
+        atol: Absolute tolerance for numpy array comparisons
+    """
+    if isinstance(obs1, dict) and isinstance(obs2, dict):
+        assert obs1.keys() == obs2.keys(), f"Keys differ at {path}: {obs1.keys()} != {obs2.keys()}"
+        for key in obs1:
+            assert_observations_equal(obs1[key], obs2[key], path=f"{path}.{key}" if path else key, atol=atol)
+    elif isinstance(obs1, np.ndarray) and isinstance(obs2, np.ndarray):
+        assert obs1.shape == obs2.shape, f"Shape mismatch at {path}: {obs1.shape} != {obs2.shape}"
+        assert obs1.dtype == obs2.dtype, f"Dtype mismatch at {path}: {obs1.dtype} != {obs2.dtype}"
+        assert np.allclose(obs1, obs2, atol=atol), (
+            f"Array values differ at {path}: max abs diff = {np.abs(obs1 - obs2).max()}"
+        )
+    else:
+        assert type(obs1) is type(obs2), f"Type mismatch at {path}: {type(obs1)} != {type(obs2)}"
+        assert obs1 == obs2, f"Values differ at {path}: {obs1} != {obs2}"
+
+
+def test_libero_env_creation():
+    """Test that the libero environment can be created successfully."""
+    config = make_env_config("libero", task="libero_spatial")
+    envs_dict = make_env(config)
+
+    assert "libero_spatial" in envs_dict
+    assert 0 in envs_dict["libero_spatial"]
+
+    env = envs_dict["libero_spatial"][0]
+    assert env is not None
+
+    # Test basic reset
+    observation, info = env.reset(seed=42)
+    assert observation is not None
+    assert info is not None
+
+    env.close()
+
+
+def test_libero_reset_determinism():
+    """Test that resetting with the same seed produces identical observations."""
+    config = make_env_config("libero", task="libero_spatial")
+    envs_dict = make_env(config)
+    env = envs_dict["libero_spatial"][0]
+
+    # Reset multiple times with the same seed
+    obs1, info1 = env.reset(seed=42)
+    obs2, info2 = env.reset(seed=42)
+    obs3, info3 = env.reset(seed=42)
+
+    # All observations should be identical
+    assert_observations_equal(obs1, obs2)
+    assert_observations_equal(obs1, obs3)
+    assert_observations_equal(obs2, obs3)
+
+    env.close()
+
+
+def test_libero_step_determinism():
+    """Test that step() is deterministic when resetting with the same seed."""
+    config = make_env_config("libero", task="libero_spatial")
+    envs_dict = make_env(config)
+    env = envs_dict["libero_spatial"][0]
+
+    seed = 42
+
+    # First rollout
+    obs1, info1 = env.reset(seed=seed)
+    action = env.action_space.sample()
+    obs_after_step1, reward1, terminated1, truncated1, info_step1 = env.step(action)
+
+    # Second rollout with identical seed and action
+    obs2, info2 = env.reset(seed=seed)
+    obs_after_step2, reward2, terminated2, truncated2, info_step2 = env.step(action)
+
+    # Initial observations should be identical
+    assert_observations_equal(obs1, obs2)
+
+    # Post-step observations should be identical
+    assert_observations_equal(obs_after_step1, obs_after_step2)
+
+    # Rewards and termination flags should be identical
+    assert np.allclose(reward1, reward2), f"Rewards differ: {reward1} != {reward2}"
+    assert np.array_equal(terminated1, terminated2), (
+        f"Terminated flags differ: {terminated1} != {terminated2}"
+    )
+    assert np.array_equal(truncated1, truncated2), f"Truncated flags differ: {truncated1} != {truncated2}"
+
+    env.close()
+
+
+@pytest.mark.parametrize("task", ["libero_spatial", "libero_object", "libero_goal", "libero_10"])
+def test_libero_tasks(task):
+    """Test that different libero tasks can be created and used."""
+    config = make_env_config("libero", task=task)
+    envs_dict = make_env(config)
+
+    assert task in envs_dict
+    assert 0 in envs_dict[task]
+
+    env = envs_dict[task][0]
+    observation, info = env.reset(seed=42)
+
+    assert observation is not None
+    assert info is not None
+
+    # Take a step
+    action = env.action_space.sample()
+    obs, reward, terminated, truncated, info = env.step(action)
+
+    assert obs is not None
+    assert reward is not None
+    assert isinstance(terminated, (bool, np.ndarray))
+    assert isinstance(truncated, (bool, np.ndarray))
+
+    env.close()