diff --git a/.github/workflows/gpu_ci_h100.yaml b/.github/workflows/gpu_ci_h100.yaml
new file mode 100644
index 0000000000..2a3303fc59
--- /dev/null
+++ b/.github/workflows/gpu_ci_h100.yaml
@@ -0,0 +1,69 @@
+name: H100-GPU-CI
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'ci/**'
+      - 'skyrl/backends/skyrl_train/**'
+      - 'skyrl/train/**'
+      - 'tests/backends/skyrl_train/gpu/gpu_ci/**'
+      - 'pyproject.toml'
+      - '!docs/**'
+      - '!examples/**'
+      - '.github/workflows/**'
+  pull_request_target:
+    types: [labeled]
+  workflow_dispatch:
+
+
+permissions:
+  checks: write   # for status checks to appear
+  contents: read
+
+jobs:
+
+  skyrl_train_tests_h100:
+    if: >
+      github.event_name == 'push' ||
+      github.event_name == 'workflow_dispatch' ||
+      (
+        github.event_name == 'pull_request_target' &&
+        !github.event.pull_request.draft &&
+        contains(github.event.pull_request.labels.*.name, 'run_h100_gpu_ci') &&
+        (
+          github.event.pull_request.author_association == 'MEMBER' ||
+          github.event.pull_request.author_association == 'OWNER' ||
+          github.event.pull_request.author_association == 'COLLABORATOR'
+        )
+      )
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+        working-directory: .
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha || github.ref }}
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+          cache: 'pip'
+      - name: Install the latest version of uv
+        uses: astral-sh/setup-uv@v6
+        with:
+          activate-environment: true
+      - name: Install basic dependencies
+        run: uv pip install anyscale==0.24.79 typer==0.9.0
+      # Run h100 tests via anyscale staging (compute config llm-team-h100-4x:1)
+      - name: GPU tests
+        env:
+          ANYSCALE_CLI_TOKEN: ${{ secrets.ANYSCALE_CLI_TOKEN_STAGING }}
+          ANYSCALE_HOST: https://console.anyscale-staging.com
+        run: |
+          anyscale job submit -f ci/anyscale_gpu_ci_h100.yaml --timeout 5400
+          anyscale job wait --name skyrl-train-gpu-ci-h100 --timeout 5400
diff --git a/ci/anyscale_gpu_ci_h100.yaml b/ci/anyscale_gpu_ci_h100.yaml
new file mode 100644
index 0000000000..5976ee1913
--- /dev/null
+++ b/ci/anyscale_gpu_ci_h100.yaml
@@ -0,0 +1,7 @@
+name: skyrl-train-gpu-ci-h100
+entrypoint: bash ci/gpu_ci_run_h100.sh
+image_uri: novaskyai/skyrl-train-ray-2.51.1-py3.12-cu12.8-megatron
+ray_version: "2.51.1"
+compute_config: llm-team-h100-4x:1
+working_dir: .
+max_retries: 0
diff --git a/ci/gpu_ci_run_h100.sh b/ci/gpu_ci_run_h100.sh
new file mode 100755
index 0000000000..f36e0b43dd
--- /dev/null
+++ b/ci/gpu_ci_run_h100.sh
@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+set -xeuo pipefail
+
+export CI=true
+
+# Prepare datasets used in tests (Megatron test uses gsm8k env_class).
+uv run examples/train/gsm8k/gsm8k_dataset.py --output_dir $HOME/data/gsm8k
+
+# Run FSDP h100 tests. Use --extra fsdp so the fsdp-only tests can collect.
+uv run --directory . --isolated --extra dev --extra fsdp pytest -s -vvv -m h100 \
+    tests/backends/skyrl_train/gpu/gpu_ci/test_policy_local_engines_e2e.py
+
+# Run Megatron h100 tests. Use --extra megatron so the megatron-only tests can collect.
+uv run --directory . --isolated --extra dev --extra megatron pytest -s -vvv -m h100 \
+    tests/backends/skyrl_train/gpu/gpu_ci/megatron/test_megatron_models.py
diff --git a/skyrl/backends/skyrl_train/distributed/fsdp_strategy.py b/skyrl/backends/skyrl_train/distributed/fsdp_strategy.py
index 7a3dfc612c..d4c995405e 100644
--- a/skyrl/backends/skyrl_train/distributed/fsdp_strategy.py
+++ b/skyrl/backends/skyrl_train/distributed/fsdp_strategy.py
@@ -219,6 +219,33 @@ def _fsdp_init_model(self, model, is_train=True, is_wrapped=False):
         }
         module = model.model if is_wrapped else model
         full_state = module.state_dict()
+
+        # Move the entire module to meta before apply_fsdp2 so the sharded
+        # DTensors are allocated directly on GPU at their final sharded size,
+        # rather than first materializing the full model on each rank.
+        # Reference: huggingface/accelerate fsdp2_prepare_model uses the
+        # same pattern.
+        #
+        # Non-persistent buffers (e.g. RotaryEmbedding.inv_freq) are not in
+        # state_dict, so they would be wiped by the meta swap. We snapshot
+        # rank 0's values before the swap and restore them on rank 0 after,
+        # so _sync_non_persistent_buffers (inside fsdp2_load_full_state_dict)
+        # can broadcast real values to the other ranks.
+        non_persistent_snapshot = {}
+        if dist.get_rank() == 0:
+            for sub_name, sub in module.named_modules():
+                for bname in getattr(sub, "_non_persistent_buffers_set", set()):
+                    buf = sub._buffers.get(bname)
+                    if buf is not None and not buf.is_meta:
+                        non_persistent_snapshot[(sub_name, bname)] = buf.detach().clone()
+
+        module.to(torch.device("meta"))
+
+        if dist.get_rank() == 0:
+            for (sub_name, bname), buf in non_persistent_snapshot.items():
+                sub = module.get_submodule(sub_name) if sub_name else module
+                sub._buffers[bname] = buf
+
         apply_fsdp2(module, fsdp_kwargs, self.fsdp_config)
         fsdp2_load_full_state_dict(module, full_state, cpu_offload)
         return module
diff --git a/skyrl/backends/skyrl_train/distributed/fsdp_utils.py b/skyrl/backends/skyrl_train/distributed/fsdp_utils.py
index 83c3e26d34..0469f2d369 100644
--- a/skyrl/backends/skyrl_train/distributed/fsdp_utils.py
+++ b/skyrl/backends/skyrl_train/distributed/fsdp_utils.py
@@ -129,100 +129,56 @@ def _sync_non_persistent_buffers(model: torch.nn.Module, loaded_sd: dict):
             module._buffers[key] = src.cpu()
 
 
-# Fsdp2 load full state dict from `accelerate`
-# Reference: https://github.com/huggingface/accelerate/blob/0af621bbecc0e43f5d43766a4945d3d2236bb8a9/src/accelerate/utils/fsdp_utils.py#L455
-# NOTE (sumanthrh): The original code from `accelerate` assumes init on meta device - with cpu init only on rank 0, but the code is compatible with cpu init on all ranks.
 def fsdp2_load_full_state_dict(model: torch.nn.Module, full_sd: dict, cpu_offload=None):
     """
-    Loads the full state dict (could be only on rank 0) into the sharded model. This is done by broadcasting the
-    parameters from rank 0 to all other ranks. This function modifies the model in-place.
+    Loads a full state dict (assumed populated on rank 0) into a sharded FSDP2
+    model by broadcasting from rank 0 and distributing per-parameter shards.
+
+    Uses PyTorch's `set_model_state_dict` with `full_state_dict=True` +
+    `broadcast_from_rank0=True`, which internally does the per-parameter
+    broadcast and DTensor distribution that we used to do manually. The
+    utility also releases intermediate staging tensors as it goes, so the
+    caching allocator can return memory to the device pool after init.
 
     Args:
         model (`torch.nn.Module`):
-            The model to load the state dict into, expected to be on meta device or a VRAM spike can occur
-        full_sd (`dict`): The full state dict to load, can be only on rank 0
+            The model to load the state dict into, expected to be on meta
+            device on all ranks except rank 0 (or on meta on all ranks and
+            full_sd populated on rank 0).
+        full_sd (`dict`): The full state dict to load (only rank 0 needs
+            real data; non-rank-0 ranks may pass an empty dict).
     """
-    import torch.distributed as dist
-    from torch.distributed.tensor import distribute_tensor
-
-    # Model was previously copied to meta device
-    meta_sharded_sd = model.state_dict()
-    sharded_sd = {}
-
-    # Rank 0 distributes the full state dict to other ranks
-    def _infer_parameter_dtype(model, param_name, empty_param):
-        try:
-            old_param = model.get_parameter_or_buffer(param_name)
-        except AttributeError:
-            # Need this for LORA, as there some params are not *parameters* of sorts
-            base_param_name, local_param_name = param_name.rsplit(".", 1)
-            submodule = model.get_submodule(base_param_name)
-            old_param = getattr(submodule, local_param_name)
-
-        is_torch_e4m3fn_available = hasattr(torch, "float8_e4m3fn")
-        casting_dtype = None
-        is_param_float8_e4m3fn = is_torch_e4m3fn_available and empty_param.dtype == torch.float8_e4m3fn
-
-        if empty_param.dtype.is_floating_point and not is_param_float8_e4m3fn:
-            casting_dtype = old_param.dtype
-
-        return old_param is not None and old_param.is_contiguous(), casting_dtype
-
-    def _cast_and_contiguous(tensor, to_contiguous, dtype):
-        if dtype is not None:
-            tensor = tensor.to(dtype=dtype)
-        if to_contiguous:
-            tensor = tensor.contiguous()
-        return tensor
-
-    if dist.get_rank() == 0:
-        for (param_name, full_param), sharded_param in zip(full_sd.items(), meta_sharded_sd.values()):
-            full_param = full_param.detach().cuda()
-            mesh = sharded_param.device_mesh
-            dist.broadcast(full_param, src=0)
-            sharded_tensor = distribute_tensor(full_param, mesh, sharded_param.placements)
-            to_contiguous, casting_dtype = _infer_parameter_dtype(
-                model,
-                param_name,
-                full_param,
-            )
-            sharded_tensor = _cast_and_contiguous(sharded_tensor, to_contiguous, casting_dtype)
-            sharded_sd[param_name] = sharded_tensor
-    # We need this else to have a matching `broadcast` for all of the ranks, else we deadlock
-    else:
-        for param_name, sharded_param in meta_sharded_sd.items():
-            full_tensor = torch.empty(sharded_param.size(), device="cuda", dtype=sharded_param.dtype)
-            mesh = sharded_param.device_mesh
-            dist.broadcast(full_tensor, src=0)
-            sharded_tensor = distribute_tensor(full_tensor, mesh, sharded_param.placements)
-            to_contiguous, casting_dtype = _infer_parameter_dtype(
-                model,
-                param_name,
-                full_tensor,
-            )
-            sharded_tensor = _cast_and_contiguous(sharded_tensor, to_contiguous, casting_dtype)
-            sharded_sd[param_name] = sharded_tensor
-
-    # we set `assign=True` because our params can be on meta device
-    model.load_state_dict(sharded_sd, assign=True)
-
-    # Broadcast non-persistent buffers (e.g. inv_freq from RotaryEmbedding) that
-    # are excluded from state_dict.  On non-rank-0 meta-init these are still on
-    # meta device with no data; rank 0 has the correctly computed values.
-    _sync_non_persistent_buffers(model, sharded_sd)
-
-    # If we don't offload FSDP2 Module to CPU and then back to GPU,
-    # it will occupy a large amount of reserved GPU memory，which can not be released using torch.cuda.empty_cache()
-    # even if we are using cpu_offload
-    # TODO (erictang000): this requires an additional offload + backload, see if this can be avoided
-    # Credit: https://github.com/volcengine/verl/pull/1667
-    offload_fsdp2_model_to_cpu(model)
-
-    torch.cuda.synchronize()
-    torch.cuda.empty_cache()
+    from torch.distributed.checkpoint.state_dict import (
+        StateDictOptions,
+        set_model_state_dict,
+    )
+
+    set_model_state_dict(
+        model,
+        full_sd,
+        options=StateDictOptions(full_state_dict=True, broadcast_from_rank0=True),
+    )
 
-    if not cpu_offload:
-        load_fsdp2_model_to_gpu(model)
+    # Broadcast non-persistent buffers (e.g. inv_freq from RotaryEmbedding)
+    # that are excluded from state_dict.  On non-rank-0 meta-init these are
+    # still on the meta device with no data; rank 0 has the correct values.
+    _sync_non_persistent_buffers(model, model.state_dict())
+
+    # NOTE: removed the offload_fsdp2_model_to_cpu + load_fsdp2_model_to_gpu
+    # dance from verl PR #1667. That trick was meant to release reserved-but-
+    # unallocated cache memory, but for FSDP2 the offload is a no-op
+    # (`model.to("cpu")` doesn't move FSDPParam-managed storage) and the reload
+    # then *allocates a second copy*. Diagnostic on Qwen3.5-35B-A3B:
+    #   after set_model_state_dict: 32.71 GiB
+    #   after offload+empty_cache:  32.71 GiB (unchanged)
+    #   after load:                 65.42 GiB (doubled)
+    # set_model_state_dict already leaves us with exactly the shard on GPU;
+    # no clean-up is needed.
+    if cpu_offload:
+        # Caller asked for CPU-resident params; the offload path is still
+        # broken for FSDP2 but we leave the request explicit so a future fix
+        # has an obvious hook.
+        offload_fsdp2_model_to_cpu(model)
     return model
 
 
diff --git a/skyrl/backends/skyrl_train/distributed/megatron/megatron_strategy.py b/skyrl/backends/skyrl_train/distributed/megatron/megatron_strategy.py
index 2325b5443c..fb79716c37 100644
--- a/skyrl/backends/skyrl_train/distributed/megatron/megatron_strategy.py
+++ b/skyrl/backends/skyrl_train/distributed/megatron/megatron_strategy.py
@@ -180,22 +180,32 @@ def setup_distributed(self, timeout=timedelta(minutes=30)) -> None:
     def offload_to_cpu(self, model, optimizer, offload_optimizer=True, offload_model=True):
         """
         Offload model weights and optimizer to CPU memory.
+
+        The grad buffer belongs to the DDP-wrapped model, not the optimizer,
+        so it is offloaded whenever ``offload_optimizer`` is requested even if
+        ``optimizer is None`` (e.g. ``policy.skip_optimizer_init=True`` flows).
         """
         if offload_model:
             offload_megatron_model_to_cpu(model)
-        if optimizer and offload_optimizer:
+        if offload_optimizer:
             offload_megatron_grads_to_cpu(model)
-            offload_megatron_optimizer(optimizer)
+            if optimizer is not None:
+                offload_megatron_optimizer(optimizer)
         torch.cuda.synchronize()
         torch.cuda.empty_cache()
 
     def backload_to_gpu(self, model, optimizer, backload_optimizer=True, backload_model=True):
-        """Reload model weights back to GPU."""
+        """Reload model weights back to GPU.
+
+        See :meth:`offload_to_cpu` for why the grad-buffer half is decoupled
+        from optimizer existence.
+        """
         if backload_model:
             load_megatron_model_to_gpu(model)
-        if optimizer and backload_optimizer:
+        if backload_optimizer:
             load_megatron_grads_to_gpu(model)
-            load_megatron_optimizer(optimizer)
+            if optimizer is not None:
+                load_megatron_optimizer(optimizer)
         torch.cuda.synchronize()
 
     def backward(self, loss: torch.Tensor, model, optimizer: optim.Optimizer, **kwargs) -> None:
diff --git a/skyrl/backends/skyrl_train/inference_servers/new_inference_worker_wrap.py b/skyrl/backends/skyrl_train/inference_servers/new_inference_worker_wrap.py
index f60b6f1ba2..9fe64f4c40 100644
--- a/skyrl/backends/skyrl_train/inference_servers/new_inference_worker_wrap.py
+++ b/skyrl/backends/skyrl_train/inference_servers/new_inference_worker_wrap.py
@@ -5,7 +5,7 @@
 enables chunked weight updates from training to inference using the
 start/update/finish lifecycle:
 
-    start_weight_update   ->  one or more update_weights_chunk  ->  finish_weight_update
+    start_weight_update   ->  one or more update_weights_ipc  ->  finish_weight_update
 
 This separates the layerwise reload initialization/finalization from individual
 chunk transfers, allowing weights to be sent in bounded-memory chunks rather
@@ -64,7 +64,7 @@ class NewInferenceWorkerWrap:
 
     Provides a three-phase weight update protocol via collective_rpc:
         1. start_weight_update: Prepare model for receiving weights
-        2. update_weights_chunk: Receive and load one chunk of weights
+        2. update_weights_ipc: Receive and load one chunk of weights
         3. finish_weight_update: Finalize the model after all chunks
 
     Attributes accessed from the host GPUWorker (via mixin inheritance):
@@ -82,7 +82,7 @@ def start_weight_update(self, is_checkpoint_format: bool = True) -> None:
         machinery which moves layers to meta device and wraps weight loaders
         to defer processing until all weights for each layer are loaded.
 
-        Must be called before any update_weights_chunk calls.
+        Must be called before any update_weights_ipc calls.
 
         Args:
             is_checkpoint_format: True if incoming weights are in checkpoint
@@ -108,7 +108,7 @@ def start_weight_update(self, is_checkpoint_format: bool = True) -> None:
         self._skyrl_is_checkpoint_format = is_checkpoint_format
         self._skyrl_weight_update_active = True
 
-    def update_weights_chunk(self, update_info: dict) -> None:
+    def update_weights_ipc(self, update_info: dict) -> None:
         """
         Receive and load a single chunk of weights.
 
@@ -127,7 +127,7 @@ def update_weights_chunk(self, update_info: dict) -> None:
                 - ipc_handles_pickled: b64(pickle({gpu_uuid: (func, args)}))
         """
         if not getattr(self, "_skyrl_weight_update_active", False):
-            raise RuntimeError("start_weight_update must be called before update_weights_chunk.")
+            raise RuntimeError("start_weight_update must be called before update_weights_ipc.")
 
         if self.weight_transfer_engine is None:
             raise RuntimeError(
@@ -178,13 +178,53 @@ def update_weights_chunk(self, update_info: dict) -> None:
         # before the sender drops its reference on the next barrier).
         torch.accelerator.synchronize()
 
+    def update_weights_nccl(self, update_info: dict) -> None:
+        """
+        Receive a batched weight update via vLLM's NCCL weight transfer engine.
+
+        Alternative to update_weights_ipc for the broadcast (non-IPC) sender:
+        the trainer initiates an NCCL broadcast via
+        NCCLWeightTransferEngine.trainer_send_weights, and each inference
+        worker calls weight_transfer_engine.receive_weights here.
+
+        Routed through this skyrl wrap (rather than vLLM's native
+        /update_weights endpoint) so the load is wrapped with
+        set_current_vllm_config — process_weights_after_loading on MoE
+        models can otherwise instantiate kernels (e.g. FlashInfer CUTLASS)
+        whose __init__ reads get_current_vllm_config().
+
+        TODO: remove once the upstream vLLM patch lands (vllm-project/vllm
+        weight-sync-fix), then route via the native /update_weights endpoint.
+        https://github.com/vllm-project/vllm/pull/42577
+        """
+        if not getattr(self, "_skyrl_weight_update_active", False):
+            raise RuntimeError("start_weight_update must be called before update_weights_nccl.")
+
+        if self.weight_transfer_engine is None:
+            raise RuntimeError(
+                "Weight transfer not configured. Please set weight_transfer_config to enable weight transfer."
+            )
+
+        from vllm.config import set_current_vllm_config
+
+        typed_update_info = self.weight_transfer_engine.parse_update_info(update_info)
+        model = self.model_runner.model
+
+        with set_current_vllm_config(self.vllm_config), torch.device(self.device):
+            self.weight_transfer_engine.receive_weights(
+                typed_update_info,
+                load_weights=model.load_weights,
+            )
+
+        torch.accelerator.synchronize()
+
     def finish_weight_update(self) -> None:
         """
         Finalize the current weight update.
 
         For checkpoint-format weights, runs layerwise postprocessing
         (quantization repacking, attention weight processing, etc.).
-        Must be called after all update_weights_chunk calls are done.
+        Must be called after all update_weights_ipc calls are done.
         """
         if not getattr(self, "_skyrl_weight_update_active", False):
             raise RuntimeError("start_weight_update must be called before finish_weight_update.")
diff --git a/skyrl/backends/skyrl_train/inference_servers/remote_inference_client.py b/skyrl/backends/skyrl_train/inference_servers/remote_inference_client.py
index 34425e0a5f..95783c12db 100644
--- a/skyrl/backends/skyrl_train/inference_servers/remote_inference_client.py
+++ b/skyrl/backends/skyrl_train/inference_servers/remote_inference_client.py
@@ -1286,7 +1286,7 @@ async def start_weight_update(
 
         Calls the NewInferenceWorkerWrap.start_weight_update method on all
         workers. For checkpoint-format weights this initializes layerwise
-        reload. Must be called before any update_weights_chunk calls.
+        reload. Must be called before any update_weights_ipc calls.
 
         Args:
             is_checkpoint_format: True if weights are in checkpoint format
@@ -1303,14 +1303,14 @@ async def start_weight_update(
             },
         )
 
-    async def update_weights_chunk(
+    async def update_weights_ipc(
         self,
         update_info: Dict[str, Any],
     ) -> Dict[str, Any]:
         """
         Send a single weight chunk via /collective_rpc.
 
-        Calls NewInferenceWorkerWrap.update_weights_chunk on all workers.
+        Calls NewInferenceWorkerWrap.update_weights_ipc on all workers.
         Can be called multiple times between start_weight_update and
         finish_weight_update.
 
@@ -1324,7 +1324,36 @@ async def update_weights_chunk(
         return await self._call_all_servers(
             "/collective_rpc",
             {
-                "method": "update_weights_chunk",
+                "method": "update_weights_ipc",
+                "kwargs": {"update_info": update_info},
+            },
+        )
+
+    async def update_weights_nccl(
+        self,
+        update_info: Dict[str, Any],
+    ) -> Dict[str, Any]:
+        """
+        Send batched weight update via /collective_rpc to the broadcast receiver.
+
+        Calls NewInferenceWorkerWrap.update_weights_nccl on all workers,
+        which routes weight_transfer_engine.receive_weights through the
+        set_current_vllm_config wrap. Used by the broadcast (NCCL) sender as
+        a temporary substitute for vLLM's native /update_weights endpoint
+        until the upstream patch (vllm-project/vllm weight-sync-fix) lands.
+
+        Args:
+            update_info: Dict with backend-specific update info (names,
+                dtype_names, shapes, packed flag, etc.) — same shape vLLM's
+                native /update_weights expects.
+
+        Returns:
+            Dict mapping server_url to response.
+        """
+        return await self._call_all_servers(
+            "/collective_rpc",
+            {
+                "method": "update_weights_nccl",
                 "kwargs": {"update_info": update_info},
             },
         )
diff --git a/skyrl/backends/skyrl_train/weight_sync/broadcast_strategy.py b/skyrl/backends/skyrl_train/weight_sync/broadcast_strategy.py
index 720b5b9275..5a02bfa8d3 100644
--- a/skyrl/backends/skyrl_train/weight_sync/broadcast_strategy.py
+++ b/skyrl/backends/skyrl_train/weight_sync/broadcast_strategy.py
@@ -185,13 +185,22 @@ def weight_iterator() -> Iterator[Tuple[str, torch.Tensor]]:
             for chunk in chunks:
                 yield from zip(chunk.names, chunk.tensors)
 
+        # Route via the skyrl wrap (start_weight_update + update_weights_nccl
+        # + finish_weight_update) rather than vLLM's native /update_weights so
+        # the receive is wrapped with set_current_vllm_config. Matches how
+        # CUDA IPC already routes through skyrl's wrap.
+        # TODO: switch back to update_named_weights once the upstream vLLM
+        # patch lands (vllm-project/vllm weight-sync-fix).
+        # https://github.com/vllm-project/vllm/pull/42577
         if torch.distributed.get_rank() == 0:
             from vllm.distributed.weight_transfer.nccl_engine import (
                 NCCLWeightTransferEngine,
             )
 
+            await self._inference_client.start_weight_update(is_checkpoint_format=True)
+
             update_info = {**weight_metadata, "packed": True}
-            update_task = asyncio.create_task(self._inference_client.update_named_weights(update_info))
+            update_task = asyncio.create_task(self._inference_client.update_weights_nccl(update_info))
 
             # Run in thread so the HTTP update_task can progress concurrently
             await asyncio.to_thread(
@@ -200,6 +209,8 @@ def weight_iterator() -> Iterator[Tuple[str, torch.Tensor]]:
                 trainer_args={"group": self._model_update_group, "packed": True},
             )
             await update_task
+
+            await self._inference_client.finish_weight_update()
         else:
             # Non-rank-0 still needs to participate in the all-gather
             for _ in weight_iterator():
diff --git a/skyrl/backends/skyrl_train/weight_sync/cuda_ipc_strategy.py b/skyrl/backends/skyrl_train/weight_sync/cuda_ipc_strategy.py
index 70147c4a7e..97ca48ac45 100644
--- a/skyrl/backends/skyrl_train/weight_sync/cuda_ipc_strategy.py
+++ b/skyrl/backends/skyrl_train/weight_sync/cuda_ipc_strategy.py
@@ -186,11 +186,11 @@ async def _send_chunks_vllm_native(
         Per chunk, each rank packs + creates one IPC handle, handles are
         all_gather_object'd into a single {gpu_uuid: handle} dict, and rank 0
         sends the dict (plus per-param `sizes` metadata) via
-        update_weights_chunk. The receiver rebuilds the packed tensor, slices
+        update_weights_ipc. The receiver rebuilds the packed tensor, slices
         it per param, and loads into vLLM.
 
         TODO: Once https://github.com/vllm-project/vllm/pull/39212 lands,
-        replace update_weights_chunk with the native /update_weights endpoint
+        replace update_weights_ipc with the native /update_weights endpoint
         and start/finish with /start_weight_update and /finish_weight_update.
         """
         rank = torch.distributed.get_rank()
@@ -254,7 +254,7 @@ async def _send_chunks_vllm_native(
                     "sizes": sizes,
                     "ipc_handles_pickled": pickled,
                 }
-                await self._inference_client.update_weights_chunk(chunk_update_info)
+                await self._inference_client.update_weights_ipc(chunk_update_info)
 
             # Keep packed_tensor alive past the barrier so the receiver's
             # rebuilt view has valid backing storage while it copies into
diff --git a/skyrl/backends/skyrl_train/workers/fsdp/fsdp_worker.py b/skyrl/backends/skyrl_train/workers/fsdp/fsdp_worker.py
index 9881acf53f..860759d633 100644
--- a/skyrl/backends/skyrl_train/workers/fsdp/fsdp_worker.py
+++ b/skyrl/backends/skyrl_train/workers/fsdp/fsdp_worker.py
@@ -159,7 +159,7 @@ def init_model(self, model_path, num_training_steps: int = None):
         wrapped_model = HFModelWrapper(
             model_path,
             use_flash_attention_2=self.cfg.flash_attn,
-            bf16=False,
+            bf16=self.cfg.policy.bf16_init,
             lora_rank=self.cfg.policy.model.lora.rank,
             lora_alpha=self.cfg.policy.model.lora.alpha,
             lora_dropout=self.cfg.policy.model.lora.dropout,
diff --git a/skyrl/backends/skyrl_train/workers/megatron/megatron_worker.py b/skyrl/backends/skyrl_train/workers/megatron/megatron_worker.py
index 7a41067ab3..beddf37e33 100644
--- a/skyrl/backends/skyrl_train/workers/megatron/megatron_worker.py
+++ b/skyrl/backends/skyrl_train/workers/megatron/megatron_worker.py
@@ -603,18 +603,24 @@ def init_model(self, model_path, num_training_steps: int = 1e9):
         if self.cfg.policy.megatron_config.torch_profiler_config.enable:
             self.profiler = Profiler(self.cfg.policy.megatron_config.torch_profiler_config)
 
-        # create optimizer
-        optim_config = init_megatron_optim_config(
-            self.cfg.policy.optimizer_config, self.cfg.policy.megatron_config.optimizer_config_kwargs
-        )
-        self.optimizer = get_megatron_optimizer(self.actor_module, optim_config)
+        # create optimizer (skipped for inference-only flows; Megatron's
+        # DistributedOptimizer eagerly materializes fp32 master + AdamW state
+        # on GPU, which OOMs large MoE models on memory-constrained nodes)
+        if self.cfg.policy.skip_optimizer_init:
+            self.optimizer = None
+            self.scheduler = None
+        else:
+            optim_config = init_megatron_optim_config(
+                self.cfg.policy.optimizer_config, self.cfg.policy.megatron_config.optimizer_config_kwargs
+            )
+            self.optimizer = get_megatron_optimizer(self.actor_module, optim_config)
 
-        # create scheduler
-        self.scheduler = get_megatron_optimizer_param_scheduler(
-            optimizer=self.optimizer,
-            config=self.cfg.policy.optimizer_config,
-            num_training_steps=num_training_steps,
-        )
+            # create scheduler
+            self.scheduler = get_megatron_optimizer_param_scheduler(
+                optimizer=self.optimizer,
+                config=self.cfg.policy.optimizer_config,
+                num_training_steps=num_training_steps,
+            )
 
         # create worker model
         self.model = MegatronModelWrapper(
@@ -868,7 +874,8 @@ def forward_backward(
         # (metrics should be identical within DP groups, i.e., across TP/PP/SP ranks)
         # NOTE: Sum loss metrics because scaling is already applied at the advantage level
         status = reduce_metrics(all_metrics, sum_loss_metrics=sum_loss_metrics)
-        status["policy_lr"] = self.optimizer.param_groups[0]["lr"]
+        if self.optimizer is not None:
+            status["policy_lr"] = self.optimizer.param_groups[0]["lr"]
         group = mpu.get_data_parallel_group(with_context_parallel=False)
         status = all_reduce_metrics(status, self.strategy, group=group, sum_loss_metrics=sum_loss_metrics)
 
@@ -886,6 +893,8 @@ def optim_step(self) -> Optional[float]:
         Returns:
             The gradient norm (before scaling, after clipping), or None if unavailable.
         """
+        if self.optimizer is None:
+            raise RuntimeError("optim_step called but policy.skip_optimizer_init=True (no optimizer constructed)")
         grad_norm = self.strategy.optimizer_step(self.optimizer, self.model, self.scheduler, name="actor")
 
         # Reset counter for next accumulation cycle
@@ -895,12 +904,15 @@ def optim_step(self) -> Optional[float]:
             grad_norm = grad_norm.detach().cpu().item() if hasattr(grad_norm, "item") else grad_norm
         return grad_norm
 
-    def get_lr(self) -> float:
+    def get_lr(self) -> Optional[float]:
         """
         Get current learning rate from optimizer.
 
-        Handles both regular optimizers and ChainedOptimizer.
+        Handles both regular optimizers and ChainedOptimizer. Returns None when
+        the worker was initialized with ``policy.skip_optimizer_init=True``.
         """
+        if self.optimizer is None:
+            return None
         if isinstance(self.optimizer, ChainedOptimizer):
             return self.optimizer.chained_optimizers[0].param_groups[0]["lr"]
         return self.optimizer.param_groups[0]["lr"]
@@ -915,8 +927,10 @@ def set_lr(self, learning_rate: float) -> None:
 
         Note: This bypasses the scheduler. The next scheduler.step() call
         will override this value unless the scheduler is configured for
-        constant LR.
+        constant LR. No-op when ``policy.skip_optimizer_init=True``.
         """
+        if self.optimizer is None:
+            return
         if isinstance(self.optimizer, ChainedOptimizer):
             # ChainedOptimizer wraps multiple optimizers (e.g., for different param groups)
             for opt in self.optimizer.chained_optimizers:
diff --git a/skyrl/train/config/config.py b/skyrl/train/config/config.py
index fccc07cc55..936c96f195 100644
--- a/skyrl/train/config/config.py
+++ b/skyrl/train/config/config.py
@@ -230,6 +230,15 @@ class PolicyConfig(BaseConfig):
     language_model_only: bool = False
     """When True, skip vision encoder initialization for multimodal models (e.g. Qwen3.5).
     Loads only the language model backbone using AutoModelForCausalLM."""
+    bf16_init: bool = False
+    """When True, initialize policy weights in bf16 instead of fp32. Defaults to fp32
+    init so FSDP mixed precision keeps fp32 master weights; only flip this on for
+    memory-constrained tests where fp32 init would OOM (e.g. large MoE on 4xH100)."""
+    skip_optimizer_init: bool = False
+    """When True, skip optimizer and LR-scheduler construction in the policy worker.
+    Use for inference-only flows (forward + weight sync, no train_step) — primarily
+    Megatron, where DistributedOptimizer eagerly materializes fp32 master + AdamW
+    state on GPU and OOMs large MoE models on memory-constrained nodes."""
 
 
 @dataclass
diff --git a/tests/backends/skyrl_train/gpu/conftest.py b/tests/backends/skyrl_train/gpu/conftest.py
index 524836fb00..eeb0902295 100644
--- a/tests/backends/skyrl_train/gpu/conftest.py
+++ b/tests/backends/skyrl_train/gpu/conftest.py
@@ -4,6 +4,23 @@
 from tests.backends.skyrl_train.gpu.utils import ray_init_for_tests
 
 
+def pytest_configure(config):
+    config.addinivalue_line(
+        "markers",
+        "h100: opt-in tests that require H100 GPUs; auto-skipped unless `-m h100` is passed.",
+    )
+
+
+def pytest_collection_modifyitems(config, items):
+    markexpr = config.getoption("markexpr", default="") or ""
+    if "h100" in markexpr:
+        return
+    skip_h100 = pytest.mark.skip(reason="H100 test — run explicitly with `-m h100`")
+    for item in items:
+        if "h100" in item.keywords:
+            item.add_marker(skip_h100)
+
+
 @pytest.fixture
 def ray_init_fixture():
     if ray.is_initialized():
diff --git a/tests/backends/skyrl_train/gpu/gpu_ci/conftest.py b/tests/backends/skyrl_train/gpu/gpu_ci/conftest.py
index cdfbd4a0f3..19ca7e1522 100644
--- a/tests/backends/skyrl_train/gpu/gpu_ci/conftest.py
+++ b/tests/backends/skyrl_train/gpu/gpu_ci/conftest.py
@@ -37,6 +37,33 @@ def _build_ray_env_vars():
     env_vars["CUDA_DEVICE_MAX_CONNECTIONS"] = "1"
     env_vars["NVTE_FUSED_ATTN"] = "0"
 
+    # Mirrors prepare_runtime_environment for the nccl weight-sync backend.
+    # Without this, NCCL 2.28's cuMem-based commAlloc SEGV's on this driver.
+    env_vars["NCCL_CUMEM_ENABLE"] = "0"
+
+    # H100 CI hosts run a CUDA 13 driver; the cu12-built NCCL 2.28.9 that
+    # torch/vllm bundle SIGSEGV's in commAlloc on that driver. Pin both
+    # pynccl (via VLLM_NCCL_SO_PATH) and torch.distributed (via LD_PRELOAD)
+    # to the cu13-built NCCL 2.29.7 wheel if it is present in the uv cache.
+    # LD_PRELOAD is required because VLLM_NCCL_SO_PATH only affects pynccl;
+    # torch's bundled NCCL is loaded independently and otherwise still
+    # SEGV's on TP>1 collectives.
+    import glob
+    import subprocess
+
+    _candidates = glob.glob("/home/ray/.cache/uv/archive-v0/*/nvidia/nccl/lib/libnccl.so.2")
+    for _p in _candidates:
+        try:
+            _ver = subprocess.run(["strings", _p], capture_output=True, text=True, timeout=10).stdout
+        except (subprocess.TimeoutExpired, OSError):
+            continue
+        if "NCCL version 2.29" in _ver and "cuda13" in _ver:
+            env_vars["VLLM_NCCL_SO_PATH"] = _p
+            existing_preload = os.environ.get("LD_PRELOAD", "")
+            env_vars["LD_PRELOAD"] = f"{_p}:{existing_preload}" if existing_preload else _p
+            log_once(f"Pinning VLLM_NCCL_SO_PATH and LD_PRELOAD={_p} (cu13-matched NCCL)")
+            break
+
     if SKYRL_PYTHONPATH_EXPORT:
         pythonpath = os.environ.get("PYTHONPATH")
         if pythonpath is None:
diff --git a/tests/backends/skyrl_train/gpu/gpu_ci/megatron/test_megatron_models.py b/tests/backends/skyrl_train/gpu/gpu_ci/megatron/test_megatron_models.py
index dab777a1da..e063160da2 100644
--- a/tests/backends/skyrl_train/gpu/gpu_ci/megatron/test_megatron_models.py
+++ b/tests/backends/skyrl_train/gpu/gpu_ci/megatron/test_megatron_models.py
@@ -72,6 +72,15 @@ def get_test_actor_config(model_name) -> SkyRLTrainConfig:
         # sample packing not yet supported for GDN
         # https://github.com/NVIDIA/Megatron-LM/pull/2644
         cfg.trainer.use_sample_packing = False
+    # Large MoE models: Megatron's DistributedOptimizer eagerly materializes
+    # the fp32 master + AdamW state on GPU at init (~6x model size), which
+    # OOMs on 4xH100 before forward ever runs. These tests only forward +
+    # weight-sync, so skip optimizer construction entirely.
+    is_large_moe = ("qwen3.5-35b" in model_name.lower() and "tiny" not in model_name.lower()) or (
+        "nemotron-3-nano" in model_name.lower()
+    )
+    if is_large_moe:
+        cfg.trainer.policy.skip_optimizer_init = True
     validate_cfg(cfg)
     return cfg
 
@@ -89,7 +98,13 @@ def _engine_overrides_for_model(model_name: str) -> dict:
     overrides = {"engine_init_kwargs": {}, "gpu_memory_utilization": 0.9}
     if "Nemotron-3-Nano" in model_name:
         overrides["engine_init_kwargs"]["max_model_len"] = 4096
-        overrides["gpu_memory_utilization"] = 0.6
+        # Megatron policy init also needs room alongside vLLM on the same
+        # GPU, so lower vLLM's pool footprint.
+        overrides["gpu_memory_utilization"] = 0.5
+    # Large MoE: Megatron policy init also needs room alongside vLLM on the
+    # same GPU, so lower vLLM's pool footprint.
+    if "qwen3.5-35b" in model_name.lower() and "tiny" not in model_name.lower():
+        overrides["gpu_memory_utilization"] = 0.5
     return overrides
 
 
@@ -205,19 +220,44 @@ async def construct_training_input_from_generator_output(generator_output, token
             id="qwen3.5-moe_tp2_ep2",
             marks=pytest.mark.skip(reason="running into correctness issues for tiny qwen3.5"),
         ),
+        # Nemotron-3-Nano (30B MoE, bf16) on 4xH100-80G. Mesh: TP=4 EP=4
+        # ETP=1 -> DP=1. vLLM TP=4 across the same 4 GPUs (colocated).
+        # TP=1 OOMed in the EP alltoall because dense layers were replicated
+        # on every GPU; TP=4 shards them 4-way and matches the qwen3.5-35b
+        # layout below. AdamW optimizer is skipped entirely via is_large_moe
+        # in get_test_actor_config (forward-only test), and vLLM gmu is
+        # lowered to 0.5 so the policy shard + vLLM pool fit on each H100.
         pytest.param(
+            4,
             1,
             1,
-            1,
-            8,
+            4,
             1,
             4,
-            8,
+            4,
             "nvidia/NVIDIA-Nemotron-3-Nano-30B-A3B-BF16",
             5e-1,
             5e-2,
-            id="nemotron3-nano_tp4_ep8",
-            marks=pytest.mark.skip(reason="skip full size nemotron3-nano test until we migrate to h100 CI"),
+            id="nemotron3-nano_tp4_ep4_h100",
+            marks=pytest.mark.h100,
+        ),
+        # Qwen3.5-35B-A3B (~35B MoE, ~3B activated) on 4xH100-80G. Mesh:
+        # TP=4 EP=4 ETP=1 -> DP=1. vLLM TP=4 across the same 4 GPUs
+        # (colocated). Thresholds mirror the GLM-4.7-Flash entry; tune as
+        # we find what the actual logprob diffs look like.
+        pytest.param(
+            4,
+            1,
+            1,
+            4,
+            1,
+            4,
+            4,
+            "Qwen/Qwen3.5-35B-A3B",
+            3e-1,
+            5e-2,
+            id="qwen3.5-35b-a3b_h100_tp4_ep4",
+            marks=pytest.mark.h100,
         ),
     ],
 )
@@ -250,7 +290,7 @@ async def test_logprobs_matching_roundtrip(
             use_local=True,
             colocate_all=True,
             backend="vllm",
-            sleep_level=1,
+            sleep_level=2,  # full sleep — this test explicitly syncs weights
             gpu_memory_utilization=engine_overrides["gpu_memory_utilization"],
             engine_init_kwargs=engine_overrides["engine_init_kwargs"],
         ) as engines:
diff --git a/tests/backends/skyrl_train/gpu/gpu_ci/test_policy_local_engines_e2e.py b/tests/backends/skyrl_train/gpu/gpu_ci/test_policy_local_engines_e2e.py
index 3480c1eb1e..27f4a6ea94 100644
--- a/tests/backends/skyrl_train/gpu/gpu_ci/test_policy_local_engines_e2e.py
+++ b/tests/backends/skyrl_train/gpu/gpu_ci/test_policy_local_engines_e2e.py
@@ -20,6 +20,11 @@
 
 MODEL = "Qwen/Qwen2.5-0.5B-Instruct"
 MOE_MODEL = "hf-internal-testing/tiny-qwen3-moe"
+QWEN_LARGE_MOE_MODEL = "Qwen/Qwen3.5-35B-A3B"
+
+# Opt-in marker for tests that require H100s. Auto-skipped unless `-m h100`
+# is passed (see pytest_collection_modifyitems in the gpu conftest).
+_h100_only = pytest.mark.h100
 
 
 def get_test_actor_config(model: str) -> SkyRLTrainConfig:
@@ -57,6 +62,12 @@ def get_test_actor_config(model: str) -> SkyRLTrainConfig:
         # moe model, dp > 1
         pytest.param(True, "nccl", "fsdp", 2, 1, "ray", MOE_MODEL, 2),
         pytest.param(False, "nccl", "fsdp", 1, 1, "ray", MOE_MODEL, 2),
+        # Qwen3.5-35B-A3B (~35B MoE, ~3B activated) on 4xH100-80G. "fsdp"
+        # is fsdp2 in the current backend (FSDP1 was removed). Colocated
+        # uses tp=4 across all 4 GPUs; non-colocated splits 2 GPUs for
+        # vLLM (tp=2) and 2 for the FSDP policy.
+        pytest.param(True, "nccl", "fsdp", 1, 4, "ray", QWEN_LARGE_MOE_MODEL, 1, marks=_h100_only),
+        pytest.param(False, "nccl", "fsdp", 1, 2, "ray", QWEN_LARGE_MOE_MODEL, 1, marks=_h100_only),
     ],
     ids=[
         "no_colocate_nccl_fsdp_vllm",
@@ -65,6 +76,8 @@ def get_test_actor_config(model: str) -> SkyRLTrainConfig:
         "non_colocated_nccl_fsdp_vllm_mp",
         "colocate_nccl_fsdp_vllm_dp",
         "non_colocated_nccl_fsdp_vllm_dp",
+        "colocate_nccl_fsdp_vllm_qwen3_5_35b_a3b_h100",
+        "no_colocate_nccl_fsdp_vllm_qwen3_5_35b_a3b_h100",
     ],
 )
 async def test_policy_local_engines_e2e(
@@ -82,6 +95,11 @@ async def test_policy_local_engines_e2e(
     Tests initalizing the policy actor group and inference engine, syncing weights, and performing generation.
     """
     cfg = get_test_actor_config(model)
+    # Large MoE policy on 4xH100 can't hold fp32 master weights alongside vLLM,
+    # so init in bf16 here. Production keeps fp32 init (FSDP mixed precision
+    # handles the bf16 cast during forward).
+    if model == QWEN_LARGE_MOE_MODEL:
+        cfg.trainer.policy.bf16_init = True
     cfg.trainer.placement.colocate_all = colocate_all
     cfg.generator.inference_engine.weight_sync_backend = weight_sync_backend
     cfg.trainer.strategy = strategy
@@ -103,6 +121,13 @@ async def test_policy_local_engines_e2e(
     ) as engines:
         client, pg = engines.client, engines.pg
 
+        # Sleep the inference engine before initializing the policy worker so
+        # the GPU is free for FSDP shard allocation (vLLM otherwise holds the
+        # bulk of HBM and FSDP init OOMs). The partial wake_up(tags=...) calls
+        # below mirror WorkerDispatch.save_weights_for_sampler.
+        if colocate_all:
+            await client.sleep()
+
         policy = init_worker_with_type(
             "policy",
             shared_pg=pg,
@@ -119,6 +144,11 @@ async def test_policy_local_engines_e2e(
             )
         )
         await client.reset_prefix_cache()
+        # Partially wake just the "weights" pool so vLLM's param.data has real
+        # GPU backing for the broadcast/IPC copy; KV cache is woken after FSDP
+        # offloads to CPU below.
+        if colocate_all:
+            await client.wake_up(tags=["weights"])
         ray.get(
             policy.async_run_ray_method(
                 "pass_through", "broadcast_to_inference_engines", client, cfg.generator.inference_engine
@@ -126,7 +156,7 @@ async def test_policy_local_engines_e2e(
         )
         if colocate_all:
             policy.offload_to_cpu()
-            await client.wake_up()
+            await client.wake_up(tags=["kv_cache"])
 
         sampling_params = get_sampling_params_for_backend(
             cfg.generator.inference_engine.backend, cfg.generator.sampling_params
diff --git a/uv.lock b/uv.lock
index 100ffd30e1..b5e6323bfb 100644
--- a/uv.lock
+++ b/uv.lock
@@ -446,6 +446,18 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/62/29/2f8418269e46454a26171bfdd6a055d74febf32234e474930f2f60a17145/aiohttp-3.13.5-cp314-cp314t-win_amd64.whl", hash = "sha256:18a2f6c1182c51baa1d28d68fea51513cb2a76612f038853c0ad3c145423d3d9", size = 505441, upload-time = "2026-03-31T22:00:12.791Z" },
 ]
 
+[[package]]
+name = "aiohttp-cors"
+version = "0.8.1"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "aiohttp" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/6f/6d/d89e846a5444b3d5eb8985a6ddb0daef3774928e1bfbce8e84ec97b0ffa7/aiohttp_cors-0.8.1.tar.gz", hash = "sha256:ccacf9cb84b64939ea15f859a146af1f662a6b1d68175754a07315e305fb1403", size = 38626, upload-time = "2025-03-31T14:16:20.048Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/98/3b/40a68de458904bcc143622015fff2352b6461cd92fd66d3527bf1c6f5716/aiohttp_cors-0.8.1-py3-none-any.whl", hash = "sha256:3180cf304c5c712d626b9162b195b1db7ddf976a2a25172b35bb2448b890a80d", size = 25231, upload-time = "2025-03-31T14:16:18.478Z" },
+]
+
 [[package]]
 name = "aiohttp-retry"
 version = "2.9.1"
@@ -1213,6 +1225,18 @@ wheels = [
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+    "python_full_version < '3.12' and platform_machine == 'aarch64' and platform_python_implementation == 'CPython' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version < '3.12' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version < '3.12' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version < '3.12' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version < '3.12' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version < '3.12' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version < '3.12' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version < '3.12' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version < '3.12' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'x86_64' and sys_platform == 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform == 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "(python_full_version == '3.13.*' and platform_machine != 'aarch64' and sys_platform == 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu') or (python_full_version == '3.13.*' and platform_python_implementation != 'CPython' and sys_platform == 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu')",
+    "(python_full_version == '3.12.*' and platform_machine != 'aarch64' and platform_machine != 'x86_64' and sys_platform == 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu') or (python_full_version == '3.12.*' and platform_machine == 'aarch64' and platform_python_implementation != 'CPython' and sys_platform == 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu')",
+    "python_full_version == '3.13.*' and platform_machine == 'aarch64' and platform_python_implementation == 'CPython' and sys_platform == 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'aarch64' and platform_python_implementation == 'CPython' and sys_platform == 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "(python_full_version < '3.12' and platform_machine != 'aarch64' and sys_platform == 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu') or (python_full_version < '3.12' and platform_python_implementation != 'CPython' and sys_platform == 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu')",
+    "python_full_version < '3.12' and platform_machine == 'aarch64' and platform_python_implementation == 'CPython' and sys_platform == 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform != 'darwin' and sys_platform != 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra == 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version < '3.12' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'x86_64' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version < '3.12' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine != 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version >= '3.14' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
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+    "python_full_version == '3.13.*' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
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+    "python_full_version < '3.12' and sys_platform == 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
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+    "python_full_version == '3.13.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and platform_machine == 'arm64' and sys_platform == 'darwin' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
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+    "python_full_version == '3.13.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+    "python_full_version == '3.12.*' and sys_platform != 'darwin' and sys_platform != 'linux' and extra != 'extra-5-skyrl-flashrl' and extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-gpu' and extra != 'extra-5-skyrl-jax' and extra != 'extra-5-skyrl-megatron' and extra != 'extra-5-skyrl-miniswe' and extra != 'extra-5-skyrl-tpu'",
+]
+dependencies = [
+    { name = "protobuf", marker = "python_full_version >= '3.12' or (python_full_version < '3.12' and extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-gpu') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-jax') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-miniswe') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-tpu') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-jax') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-miniswe') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-tpu') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-tpu') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu') or sys_platform == 'linux'" },
+]
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+wheels = [
+    { url = "https://files.pythonhosted.org/packages/2d/ad/ff5f619a04cddb4936ead0dd8f590c5b373c5b4b9f2eef555e9d3d951ccb/opentelemetry_proto-1.42.0-py3-none-any.whl", hash = "sha256:2c0716a37e5c12efef37cbd01906d649b7fb85c85ac687518d0bd28527c6498e", size = 71779, upload-time = "2026-05-19T09:46:24.536Z" },
+]
+
 [[package]]
 name = "opentelemetry-sdk"
-version = "1.40.0"
+version = "1.42.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "opentelemetry-api", marker = "python_full_version >= '3.12' or (python_full_version < '3.12' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-jax') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-miniswe') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-tpu') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-tpu') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu') or (sys_platform == 'linux' and extra == 'extra-5-skyrl-fsdp') or (sys_platform == 'linux' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-megatron') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-gpu') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-jax') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-megatron') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-miniswe') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-tpu') or (extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-megatron') or (extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-miniswe') or (extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-tpu') or (extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu')" },
-    { name = "opentelemetry-semantic-conventions", marker = "python_full_version >= '3.12' or (python_full_version < '3.12' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-jax') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-miniswe') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-tpu') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-tpu') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu') or (sys_platform == 'linux' and extra == 'extra-5-skyrl-fsdp') or (sys_platform == 'linux' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-megatron') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-gpu') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-jax') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-megatron') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-miniswe') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-tpu') or (extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-megatron') or (extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-miniswe') or (extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-tpu') or (extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu')" },
-    { name = "typing-extensions", marker = "python_full_version >= '3.12' or (python_full_version < '3.12' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-jax') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-miniswe') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-tpu') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-jax' and extra == 'extra-5-skyrl-megatron') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-tpu') or (python_full_version < '3.12' and extra == 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu') or (sys_platform == 'linux' and extra == 'extra-5-skyrl-fsdp') or (sys_platform == 'linux' and extra != 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-megatron') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-fsdp') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-gpu') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-jax') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-megatron') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-miniswe') or (extra == 'extra-5-skyrl-flashrl' and extra == 'extra-5-skyrl-tpu') or (extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-megatron') or (extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-miniswe') or (extra != 'extra-5-skyrl-fsdp' and extra == 'extra-5-skyrl-gpu' and extra == 'extra-5-skyrl-tpu') or (extra != 'extra-5-skyrl-fsdp' and extra != 'extra-5-skyrl-megatron' and extra == 'extra-5-skyrl-miniswe' and extra == 'extra-5-skyrl-tpu')" },
+    { name = "opentelemetry-api" },
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+[package.optional-dependencies]
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+    { name = "aiohttp-cors" },
+    { name = "colorful" },
+    { name = "grpcio" },
+    { name = "opencensus" },
+    { name = "opentelemetry-exporter-prometheus" },
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+    { name = "opentelemetry-sdk" },
+    { name = "prometheus-client" },
+    { name = "py-spy" },
+    { name = "pydantic" },
+    { name = "requests" },
+    { name = "smart-open" },
+    { name = "virtualenv" },
+]
+
 [[package]]
 name = "realtime"
 version = "2.28.3"
@@ -9545,6 +9859,9 @@ miniswe = [
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     { name = "wandb" },
 ]
+ray = [
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+]
 skyrl-train = [
     { name = "accelerate" },
     { name = "datasets" },
@@ -9666,6 +9983,7 @@ requires-dist = [
     { name = "pytest-asyncio", marker = "extra == 'dev'" },
     { name = "pytest-forked", marker = "extra == 'dev'" },
     { name = "ray", marker = "extra == 'skyrl-train'", specifier = "==2.51.1" },
+    { name = "ray", extras = ["default"], marker = "extra == 'ray'", specifier = "==2.51.1" },
     { name = "rich", specifier = ">=14.1.0" },
     { name = "s3fs", marker = "extra == 'skyrl-train'" },
     { name = "safetensors", specifier = ">=0.6.2" },
@@ -9704,7 +10022,7 @@ requires-dist = [
     { name = "vllm-router", marker = "sys_platform == 'linux' and extra == 'skyrl-train'" },
     { name = "wandb", marker = "extra == 'skyrl-train'" },
 ]
-provides-extras = ["gpu", "tpu", "tinker", "aws", "gcp", "azure", "jax", "skyrl-train", "fsdp", "megatron", "flashrl", "miniswe", "harbor", "dev"]
+provides-extras = ["gpu", "tpu", "tinker", "ray", "aws", "gcp", "azure", "jax", "skyrl-train", "fsdp", "megatron", "flashrl", "miniswe", "harbor", "dev"]
 
 [[package]]
 name = "skyrl-gym"
@@ -9727,6 +10045,18 @@ requires-dist = [
 ]
 provides-extras = ["dev"]
 
+[[package]]
+name = "smart-open"
+version = "7.6.1"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "wrapt" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/c5/65/3ada667d32675399001bf022ad3d9f3989b57101351ebc71d6fbe2384634/smart_open-7.6.1.tar.gz", hash = "sha256:4347996e7ba21db7cd1e059632e0b30395407e4f6c660d2ddffc8f2a9ae5f990", size = 54754, upload-time = "2026-05-09T06:23:37.06Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/14/78/0f68b93564b8c6b6987a0696c582ba2591a381ab2f733a501909e949f241/smart_open-7.6.1-py3-none-any.whl", hash = "sha256:b4de6aebef023aca91cc9fb372052e1343ba3f152de215bd22391a663e3ddd21", size = 64845, upload-time = "2026-05-09T06:23:35.386Z" },
+]
+
 [[package]]
 name = "smmap"
 version = "5.0.3"