fix(robomme): make docs build + fast tests green

1. Docs: add robomme to _toctree.yml under Benchmarks so doc-builder's
   TOC integrity check stops rejecting the new page.

2. Fast tests: robomme's mani-skill transitively pins numpy<2 which is
   unsatisfiable against the project's numpy>=2 base pin, so `uv sync`
   couldn't resolve a universal lockfile.

   Drop robomme as a pyproject extra entirely — it truly cannot coexist
   with the rest of the dep tree. The Dockerfile installs robomme
   directly from its git URL via `uv pip install --override`, which was
   already the runtime path. pyproject, docs, env docstrings, and the
   CI job comment all now point to the docker-only install.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/benchmark_tests.yml

@@ -312,7 +312,8 @@ jobs:
           if-no-files-found: warn
 
   # ── ROBOMME ───────────────────────────────────────────────────────────────
-  # Isolated image: lerobot[robomme] only (mani-skill, SAPIEN, Vulkan chain)
+  # Isolated image: mani-skill/SAPIEN/Vulkan chain with gymnasium and numpy
+  # overrides (robomme can't be a pyproject extra due to numpy<2 pin).
   robomme-integration-test:
     name: RoboMME — build image + 1-episode eval
     runs-on:

docker/Dockerfile.benchmark.robomme

@@ -40,12 +40,14 @@ RUN apt-get update \
     && apt-get clean && rm -rf /var/lib/apt/lists/*
 USER user_lerobot
 
-# Refresh pyproject/setup.py so the PR's robomme extra is registered, then
-# install it with gymnasium/numpy overrides to downgrade from lerobot[all].
+# Install smolvla + av-dep via the PR's pyproject, then layer robomme on top
+# with gymnasium/numpy overrides. robomme isn't a pyproject extra because its
+# mani-skill pin conflicts with lerobot's base numpy>=2 (see pyproject.toml).
 COPY --chown=user_lerobot:user_lerobot setup.py pyproject.toml uv.lock README.md MANIFEST.in ./
 RUN printf 'gymnasium==0.29.1\nnumpy==1.26.4\n' > /tmp/robomme_override.txt \
     && uv pip install --no-cache --override /tmp/robomme_override.txt \
-         -e ".[robomme,smolvla,av-dep]" \
+         -e ".[smolvla,av-dep]" \
+         "robomme @ git+https://github.com/RoboMME/robomme_benchmark.git@main" \
     && python -c "import robomme; print('robomme import OK')"
 
 # Overlay the PR's source code on top of the nightly image.

docs/source/_toctree.yml

@@ -79,6 +79,8 @@
     title: LIBERO
   - local: metaworld
     title: Meta-World
+  - local: robomme
+    title: RoboMME
   - local: envhub_isaaclab_arena
     title: NVIDIA IsaacLab Arena Environments
   title: "Benchmarks"

docs/source/robomme.mdx

@@ -23,10 +23,12 @@
 ### Native (Linux)
 
 ```bash
-pip install 'lerobot[robomme]'
+pip install --override <(printf 'gymnasium==0.29.1\nnumpy==1.26.4\n') \
+  -e '.[smolvla,av-dep]' \
+  'robomme @ git+https://github.com/RoboMME/robomme_benchmark.git@main'
 ```
 
-> **Dependency note**: `robomme` pulls in `mani-skill` which pins `gymnasium==0.29.1` and `numpy<2.0.0`. These conflict with lerobot's default pins. On Linux you can pin both in your env; see the Docker approach below to avoid conflicts entirely.
+> **Dependency note**: `mani-skill` (pulled by `robomme`) pins `gymnasium==0.29.1` and `numpy<2.0.0`, which conflict with lerobot's base `numpy>=2.0.0`. That's why `robomme` is not a pyproject extra — use the override install above, or the Docker approach below to avoid conflicts entirely.
 
 ### Docker (recommended)
 

pyproject.toml

@@ -211,9 +211,10 @@ aloha = ["lerobot[dataset]", "gym-aloha>=0.1.2,<0.2.0", "lerobot[scipy-dep]"]
 pusht = ["lerobot[dataset]", "gym-pusht>=0.1.5,<0.2.0", "pymunk>=6.6.0,<7.0.0"] # TODO: Fix pymunk version in gym-pusht instead
 libero = ["lerobot[dataset]", "lerobot[transformers-dep]", "hf-libero>=0.1.3,<0.2.0; sys_platform == 'linux'", "lerobot[scipy-dep]"]
 metaworld = ["lerobot[dataset]", "metaworld==3.0.0", "lerobot[scipy-dep]"]
-robomme = [
-    "robomme @ git+https://github.com/RoboMME/robomme_benchmark.git@main ; sys_platform == 'linux'",
-]
+# NOTE: robomme is NOT a pyproject extra — mani-skill hard-pins numpy<2
+# which conflicts with lerobot's numpy>=2 base pin, so the two trees can't
+# resolve into a single env. Install it only in the RoboMME Docker image
+# via `uv pip install --override` (see docker/Dockerfile.benchmark.robomme).
 
 # All
 all = [

src/lerobot/envs/configs.py

@@ -585,7 +585,8 @@ class RoboMMEEnv(EnvConfig):
     Dataset: lerobot/robomme (LeRobot v3.0, 1,600 episodes).
     Benchmark: https://github.com/RoboMME/robomme_benchmark
 
-    Requires: pip install 'lerobot[robomme]' (Linux only).
+    Requires the `robomme` git package installed separately (Linux only);
+    see docker/Dockerfile.benchmark.robomme for the canonical install.
     """
 
     task: str = "PickXtimes"

src/lerobot/envs/robomme.py

@@ -10,7 +10,7 @@ RoboMME tasks:
   Imitation:   MoveCube, InsertPeg, PatternLock, RouteStick
 
 Dataset: lerobot/robomme (LeRobot v3.0, 1,600 episodes)
-Install: pip install 'lerobot[robomme]'  (Linux only)
+Install: see docker/Dockerfile.benchmark.robomme  (Linux only — mani-skill vs numpy pin conflict)
 Benchmark: https://github.com/RoboMME/robomme_benchmark
 """