Option A: when a {python} cell fails with ModuleNotFoundError/ImportError, the
log now suggests the exact PyPI package to add (with a module->package map, e.g.
cv2 -> opencv-python, sklearn -> scikit-learn), names the Verso requirements
file, and notes it could instead be a local module — so the langmuirthermalstudy
case isn't mistaken for a PyPI package.
Switch the per-project requirements file from requirements.txt to a Verso-
specific requirements.vrf (so it won't be confused with arbitrary .txt files);
QuartoRunner now looks for requirements.vrf, and 'vrf' is registered as an
editable text extension. The dedicated in-UI editor (and hiding it from the
file tree) follows in a separate change.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Base image: add opencv-python-headless (cv2) and tqdm to the bundled
scientific stack, and python3-venv (needed to build per-project venvs).
Per-project dependencies: a project's requirements.txt is now installed into a
venv cached by its sha256 (python3 -m venv --system-site-packages, so the
bundled stack stays visible and only extra packages are installed); QuartoRunner
points Quarto at it via QUARTO_PYTHON. A per-hash flock serialises concurrent
builds; pip output is merged into output.log; on failure the render falls back
to the base interpreter. Venvs live under PYTHON_VENVS_DIR
(default /var/lib/overleaf/data/python-venvs).
Gating: PythonVenvGate.userCanInstallPython restricts installs to the project
owner + invited collaborators (ignorePublicAccess excludes anonymous/link
users), threaded to CLSI as allowPythonInstall on the editor compile,
presentation export, and publish paths. Behind OVERLEAF_ENABLE_PROJECT_PYTHON_VENV
(enabled in the deployment). Design doc updated; Phase 2 (egress policy) and
Phase 3 (venv eviction) remain.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Captures the proposed requirements.txt -> cached virtualenv approach (keyed by
hash, --system-site-packages, QUARTO_PYTHON), its guard rails (auth gating,
egress restriction, resource caps) given anonymous write is enabled, lifecycle
(eviction, failure UX), a phased rollout, and the open decisions.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
claude