feat: downgrade Python baseline to 3.13 for PaddleOCR compatibility
Tests / Test passed: 789

paddlepaddle has no Python 3.14 (cp314) wheel on PyPI, so host-agent
deployments on 3.14 can never install it, causing OCR to fail at
runtime with RuntimeError. Pin the workspace to Python 3.13 across
all pyproject.toml files, the Docker base image, and the Jenkins CI
image; regenerate uv.lock against 3.13.

Also fixes a pre-existing Python-2-style `except X, Y:` syntax error
(invalid in all Python 3.x) in runtime/task.py and
packages/cloud-platform/cloud/{sql_repository,internal_api/api}.py,
introduced in 22d37ca9 and unrelated to this change's scope, which
blocked the full test suite from collecting on any interpreter
version.

openspec change: downgrade-python-3-13-paddleocr
This commit is contained in:
2026-07-14 18:05:49 +08:00
parent ecb1dba9ff
commit 25ebc10a8a
16 changed files with 645 additions and 792 deletions
+1 -1
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@@ -23,7 +23,7 @@ COPY cloud-console/ ./
RUN npm run build
# Stage 2: the existing Python image, now carrying the SPA build output.
FROM registry-ghcr.jerryyan.top/astral-sh/uv:python3.14-bookworm-slim
FROM registry-ghcr.jerryyan.top/astral-sh/uv:python3.13-bookworm-slim
ENV PYTHONDONTWRITEBYTECODE=1 \
PYTHONUNBUFFERED=1 \
Vendored
+1 -1
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@@ -55,7 +55,7 @@ pipeline {
when { expression { return !params.SKIP_TESTS } }
agent {
docker {
image 'registry-ghcr.jerryyan.top/astral-sh/uv:python3.14-bookworm-slim'
image 'registry-ghcr.jerryyan.top/astral-sh/uv:python3.13-bookworm-slim'
reuseNode true
// The Docker Pipeline plugin runs the container as the Jenkins host
// user (non-root), so /root isn't writable. Cache under /tmp, which is
+1 -1
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@@ -2,7 +2,7 @@
name = "device-cloud-api"
version = "0.1.0"
description = "Deployable Cloud Control Plane API for Device Agent Runtime."
requires-python = ">=3.14"
requires-python = ">=3.13,<3.14"
dependencies = [
"device-cloud-platform==0.1.0",
"fastapi>=0.115.0",
+1 -1
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@@ -2,7 +2,7 @@
name = "device-host-agent"
version = "0.1.0"
description = "Outbound device-host worker for the Device Cloud Platform."
requires-python = ">=3.14"
requires-python = ">=3.13,<3.14"
dependencies = [
"device-agent-runtime==0.1.0",
"device-cloud-platform==0.1.0",
+9 -5
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@@ -102,7 +102,7 @@ export WDA_BUNDLE_ID="com.<your-name>.WebDriverAgentRunner"
### 4.1 Homebrew、Python 和 Node.js
本项目当前在 `pyproject.toml` 中要求 Python `>=3.14`。Appium 3.1 要求 Node.js
本项目当前在 `pyproject.toml` 中要求 Python `>=3.13,<3.14`。Appium 3.1 要求 Node.js
`^20.19.0 || ^22.12.0 || >=24.0.0`,并要求 npm `>=10`
已安装 Homebrew 时执行:
@@ -123,7 +123,7 @@ npm --version
在仓库根目录执行:
```bash
uv python install 3.14
uv python install 3.13
uv sync --locked --all-packages
uv run --package device-agent-runtime python --version
uv run --package device-cloud-platform python -c "import cloud"
@@ -153,9 +153,13 @@ uv pip install \
```
这种降级安装不包含 OCR。`find_text` 和基于 OCR 的 screen description 可能返回空
结果,但 WDA 基础控制不受影响。不要为了兼容 PaddleOCR 擅自降到 Python 3.13,
因为当前项目元数据明确要求 Python 3.14;如需降级,应先作为独立兼容性变更修改
和验证 `pyproject.toml`
结果,但 WDA 基础控制不受影响。
项目已固定使用 Python 3.13(见 `pyproject.toml``requires-python`),原因是
`paddlepaddle` 在 PyPI 上尚未发布 Python 3.14 (cp314) 的 wheel,3.14 环境下无法
安装 `paddlepaddle`,会导致 OCR 相关功能在运行时报 `RuntimeError`。注意
`paddlepaddle` 本身并未作为 `paddleocr` 的声明依赖被 `uv sync` 自动安装,需要
在 3.13 环境下手动执行 `uv pip install paddlepaddle` 才能让 OCR 引擎真正可用。
### 4.3 安装 Appium 和 XCUITest Driver
@@ -0,0 +1,2 @@
schema: spec-driven
created: 2026-07-14
@@ -0,0 +1,54 @@
## Context
The workspace root and all three `uv` workspace members (`apps/device-host-agent`, `apps/cloud-api`, `packages/cloud-platform`) pin `requires-python = ">=3.14"`. `Dockerfile` and `Jenkinsfile` both build on `astral-sh/uv:python3.14-bookworm-slim`. `paddleocr>=3.0.0` is a hard dependency of the root `device-agent-runtime` project (`pyproject.toml:13`), and `perception/ocr.py::PaddleOCREngine._load()` requires the separate `paddlepaddle` package at runtime to actually run inference — but `paddlepaddle` has no `cp314` wheel on PyPI (verified against the PyPI project page and `PaddlePaddle/PaddleOCR#17370`), so no Python-3.14 environment in this project can ever install it. This has already caused a production task failure on a real host-agent device. `docs/MACOS_IPHONE_SETUP.md:156-158` already flagged this exact tension and required it be resolved as a deliberate, validated workspace-wide change rather than an ad hoc per-host downgrade — this design is that change.
## Goals / Non-Goals
**Goals:**
- Make `paddlepaddle` installable (and therefore OCR functional) on every environment that follows this project's documented setup, by moving the supported Python version to one PaddlePaddle actually ships wheels for.
- Keep the four workspace `pyproject.toml` files, `uv.lock`, `Dockerfile`, and `Jenkinsfile` mutually consistent on Python 3.13.
- Preserve all existing runtime behavior — this is a toolchain change, not a feature change. No application code logic should need to change to satisfy this proposal (only the interpreter/dependency-resolution target).
**Non-Goals:**
- Not declaring `paddlepaddle` as a project dependency in `pyproject.toml`/`uv.lock`. Per the earlier decision in this incident, installing `paddlepaddle` itself remains a manual, per-host operational step (`uv pip install paddlepaddle`), independent of this change. This proposal only removes the upstream blocker that made that manual install impossible; it does not automate the install.
- Not hardening `perception/ocr.py::run_ocr()` to catch `RuntimeError` from the OCR engine. That was raised and explicitly declined as a separate concern during incident triage — a task can still fail today if `paddlepaddle` is missing on a 3.13 host, just for a legitimate reason (nobody installed it) rather than an impossible one (no wheel exists).
- Not adding a Python version support matrix / CI test matrix across multiple Python versions. This project has always targeted a single pinned version; this change moves that single pin from 3.14 to 3.13, it does not introduce multi-version support.
- Not touching any application-level requirement/behavior — no `openspec/specs/*` capability changes accompany this change (see proposal.md Capabilities section).
## Decisions
**D1: Target `>=3.13,<3.14` (not a bare `>=3.13`).**
An open-ended `>=3.13` would silently re-admit 3.14 (and any future 3.15+) the moment a contributor's local `uv` picks a newer interpreter, reintroducing this exact bug with no warning. Pinning `<3.14` forces `uv sync`/`uv lock` to fail loudly if someone's environment tries to resolve against an unsupported interpreter, and makes the reason (paddlepaddle wheel availability) discoverable by grepping for the upper bound. When PaddlePaddle eventually ships `cp314` wheels, lifting this bound is a deliberate, reviewable one-line change rather than an implicit drift.
**D2: Change all four `pyproject.toml` files together, in one change.**
`uv` workspaces require a single resolved environment shared across all members (one `uv.lock`, one `.venv`) — `apps/cloud-api`, `apps/device-host-agent`, and `packages/cloud-platform` cannot each pin a different Python floor without breaking `uv sync --all-packages`. Alternatives considered: downgrading only `apps/device-host-agent` (the only member that actually touches OCR) — rejected, because `uv` workspace resolution is root-driven and per-member `requires-python` values are intersected, not independently honored; leaving the others at `>=3.14` while the root moves to `<3.14` would make the workspace intersection empty and `uv sync` would fail outright.
**D3: Re-run `uv lock` from scratch against Python 3.13 rather than hand-editing `uv.lock`.**
`uv.lock` embeds resolution metadata (wheel tags, hashes) tied to the target Python version; hand-editing it to swap version markers risks producing an internally inconsistent lockfile that `uv sync --locked` would reject or, worse, silently misresolve. A clean `uv lock` re-resolution is the only way to get a trustworthy lockfile, and lets the resolver naturally surface any dependency that (unlike `paddleocr`) turns out to have its own 3.13-vs-3.14 constraint conflicts.
**D4: Treat the Python-3.14-only-syntax audit as a verification task, not a design-time judgment call.**
A preliminary grep for known 3.14-only constructs (PEP 750 t-strings, `annotationlib`, `compression.zstd`) found no usage — but the only reliable check is actually running the full non-integration test suite under a real 3.13 interpreter, since static grepping cannot catch every possible 3.14-only stdlib call. `tasks.md` makes this an explicit, checked step rather than assuming the grep was sufficient.
**D5: No `openspec/specs/*` capability delta.**
This change alters the supported Python interpreter version and dependency resolution, not any capability's observable request/response behavior, protocol, or user-facing requirement. Every existing capability spec (`host-agent-protocol`, `perception-provider`, etc.) continues to describe the system correctly after this change. Consistent with treating this as a pure infrastructure/toolchain change (see proposal.md Capabilities section, which lists none).
## Risks / Trade-offs
- **[Risk] Some other pinned dependency in `uv.lock` might not have resolved the same way (or at all) for cp313 as it did for cp314** → Mitigation: `uv lock` will surface any resolution failure explicitly at lock time (task 2), and the full non-integration test suite must pass against the regenerated lock before this change is considered complete (task 5).
- **[Risk] Any contributor or deployment target still holding a Python 3.14 interpreter/venv will have builds/CI break the moment this merges** → Mitigation: this is the intended, accepted breaking change (called out as **BREAKING** in proposal.md); `docs/MACOS_IPHONE_SETUP.md` is updated in the same change to tell operators to install Python 3.13 instead, and the Docker/Jenkins base images are updated in lockstep so CI and containerized deployments do not need a separate manual step.
- **[Risk] Undiscovered 3.14-only syntax somewhere in the ~200+ Python files** → Mitigation: D4 — full test suite run under 3.13 is a required, verified task, not an assumption.
- **[Trade-off] This still does not make OCR work out of the box** — `paddlepaddle` remains an unlisted, manual dependency per the prior decision (Non-Goals). Every host still needs a manual `uv pip install paddlepaddle` after this change, and that install will still be wiped by a future `uv sync --locked` (a previously accepted and documented risk, now finally actionable since a compatible wheel will exist). This trade-off was deliberately kept out of scope to keep this change focused on the single blocking issue (wheel availability), not dependency-declaration policy.
## Migration Plan
1. Update `requires-python` in all four `pyproject.toml` files to `>=3.13,<3.14`.
2. Update `Dockerfile` and `Jenkinsfile` base images to `astral-sh/uv:python3.13-bookworm-slim`.
3. `uv python install 3.13`, then `uv lock` to regenerate `uv.lock` against the new interpreter.
4. `uv sync --locked --all-packages` to provision a 3.13 `.venv` from the new lock.
5. Run the full non-integration test suite (`uv run --all-packages pytest -m "not integration"`) and fix any failures caused by the interpreter change (expected: none, per D4).
6. Update `docs/MACOS_IPHONE_SETUP.md` to reflect the new 3.13 baseline and remove the now-obsolete "do not downgrade" warning.
7. No code rollback path is meaningfully separate from a `git revert` of this change — reverting restores the 3.14 pin and the pre-existing (already-broken) OCR situation, which is a safe rollback target since it is today's status quo.
## Open Questions
- None blocking. If PaddlePaddle later ships a `cp314` wheel, lifting the `<3.14` bound (D1) is a natural, separately-reviewable follow-up, not something this change needs to anticipate further than the explicit upper bound already makes discoverable.
@@ -0,0 +1,29 @@
## Why
PaddlePaddle has not published a Python 3.14 (`cp314`) wheel on PyPI (confirmed against PyPI project page and `PaddlePaddle/PaddleOCR#17370`, upstream tracking issue, no ETA). `perception/ocr.py::PaddleOCREngine` requires `paddlepaddle` at runtime to actually run inference, and `paddleocr>=3.0.0` is a hard dependency in `pyproject.toml`. Because the workspace pins `requires-python = ">=3.14"`, any host running this project on Python 3.14 can install `paddleocr` (pure-Python wheel) but can never install `paddlepaddle` — OCR will always fail with `RuntimeError: Engine 'paddle_static' is unavailable because dependency 'paddlepaddle' is not installed.` regardless of how the package is installed.
This has already caused a production task failure (`assignment ec036... attempt 1 on device-8967d09f0d5f4cf49f7361a9f0dcb0ce: failed`). `docs/MACOS_IPHONE_SETUP.md` already anticipated this class of problem and explicitly told operators not to downgrade to Python 3.13 ad hoc — it requires this to be done as a reviewed, workspace-wide compatibility change first. This proposal is that change.
## What Changes
- Lower the workspace's minimum/target Python version from `3.14` to `3.13` so `paddlepaddle` (and therefore working OCR) can actually be installed. **BREAKING**: any environment currently pinned to Python 3.14 must reinstall its toolchain with Python 3.13; `uv.lock` will be regenerated against the new interpreter and is not compatible with a 3.14-only environment.
- Update `requires-python` in all four workspace `pyproject.toml` files (root, `apps/device-host-agent`, `apps/cloud-api`, `packages/cloud-platform`) from `>=3.14` to `>=3.13,<3.14`.
- Update the Docker/CI base image from `astral-sh/uv:python3.14-bookworm-slim` to `astral-sh/uv:python3.13-bookworm-slim` in `Dockerfile` and `Jenkinsfile`.
- Regenerate `uv.lock` against Python 3.13, which is expected to newly resolve a `paddlepaddle` wheel as installable (it is not added as a declared dependency by this change — see Non-Goals in design.md).
- Audit the codebase for any Python-3.14-only syntax/stdlib usage that would break under 3.13, and fix or confirm none exists.
- Update `docs/MACOS_IPHONE_SETUP.md` to remove/replace the now-obsolete "do not downgrade to 3.13 ad hoc" warning with guidance matching the new baseline.
## Capabilities
### New Capabilities
- `python-runtime-baseline`: declares and enforces the workspace's supported Python interpreter version (3.13) consistently across all `pyproject.toml` files, `uv.lock`, the Docker image, and the CI pipeline.
### Modified Capabilities
(none — no *existing* capability's observable requirements change; `perception-provider` and `host-agent-protocol` behavior are unaffected, only the Python interpreter version and dependency resolution change)
## Impact
- **Affected files**: `pyproject.toml`, `apps/device-host-agent/pyproject.toml`, `apps/cloud-api/pyproject.toml`, `packages/cloud-platform/pyproject.toml`, `uv.lock`, `Dockerfile`, `Jenkinsfile`, `docs/MACOS_IPHONE_SETUP.md`.
- **Affected systems**: local dev environments, CI (Jenkins), production Docker images/deployment — all must move to Python 3.13.
- **Dependencies**: full `uv lock` re-resolution against 3.13; no dependency version pins in `pyproject.toml` are expected to need changes, but the lock will reflect whatever the resolver picks for 3.13.
- **Out of scope**: actually declaring `paddlepaddle` as a project dependency (remains a manual per-host install, per prior decision) and hardening `perception/ocr.py::run_ocr()` to catch `RuntimeError` (previously declined by the user as a separate concern).
@@ -0,0 +1,23 @@
## ADDED Requirements
### Requirement: Workspace-wide supported Python version
The system SHALL declare a single, consistent supported Python interpreter version range across the `uv` workspace root and every workspace member (`apps/device-host-agent`, `apps/cloud-api`, `packages/cloud-platform`), such that the range admits Python 3.13 and excludes Python 3.14, so that `paddlepaddle` (which has no Python 3.14 wheel available on PyPI) can be installed in every environment that follows the project's documented setup.
#### Scenario: Workspace resolves and syncs on Python 3.13
- **WHEN** an operator runs `uv python install 3.13` followed by `uv sync --locked --all-packages` in the repository root
- **THEN** the sync succeeds and provisions a `.venv` using a Python 3.13 interpreter, with `uv.lock` resolved against that interpreter
#### Scenario: A Python 3.14 interpreter is rejected
- **WHEN** `uv` attempts to resolve or sync the workspace against a Python 3.14 interpreter
- **THEN** `uv` reports the interpreter as incompatible with the declared `requires-python` range, rather than silently proceeding
### Requirement: Container and CI images match the declared Python baseline
The system SHALL build its Docker image and Jenkins CI pipeline using a base image whose Python version matches the workspace's declared `requires-python` range, so that containerized and CI environments never diverge from what local development targets.
#### Scenario: Docker image build uses the supported Python version
- **WHEN** the project's `Dockerfile` is built
- **THEN** the resulting image's base image is `astral-sh/uv:python3.13-bookworm-slim`
#### Scenario: CI pipeline uses the supported Python version
- **WHEN** the Jenkins pipeline defined in `Jenkinsfile` executes
- **THEN** it runs inside the `astral-sh/uv:python3.13-bookworm-slim` image
@@ -0,0 +1,36 @@
## 1. Update Python version pins
- [x] 1.1 Update `requires-python` in root `pyproject.toml` from `>=3.14` to `>=3.13,<3.14`
- [x] 1.2 Update `requires-python` in `apps/device-host-agent/pyproject.toml` to `>=3.13,<3.14`
- [x] 1.3 Update `requires-python` in `apps/cloud-api/pyproject.toml` to `>=3.13,<3.14`
- [x] 1.4 Update `requires-python` in `packages/cloud-platform/pyproject.toml` to `>=3.13,<3.14`
## 2. Update container/CI base images
- [x] 2.1 Update `Dockerfile:26` base image from `astral-sh/uv:python3.14-bookworm-slim` to `astral-sh/uv:python3.13-bookworm-slim`
- [x] 2.2 Update `Jenkinsfile:58` image reference from `astral-sh/uv:python3.14-bookworm-slim` to `astral-sh/uv:python3.13-bookworm-slim`
- [x] 2.3 Grep the repo for any other `python3.14`/`3.14` references tied to the toolchain (excluding this change's own `openspec/changes/` artifacts and historical `openspec/changes/archive/` records) and update or confirm each is out of scope
## 3. Regenerate the lockfile and provision the environment
- [x] 3.1 `uv python install 3.13`
- [x] 3.2 `uv lock` to regenerate `uv.lock` against Python 3.13; confirm the resolution completes without conflict errors
- [x] 3.3 `uv sync --locked --all-packages` to provision a fresh `.venv`; confirm it uses the 3.13 interpreter (`uv run --package device-agent-runtime python --version`)
- [x] 3.4 Confirm `paddlepaddle` is now installable against the regenerated lock/environment (`uv pip install paddlepaddle` succeeds and `python -c "import paddle"` works) — manual, not added to `pyproject.toml`/`uv.lock`, per design.md Non-Goals
## 4. Verify no Python-3.14-only usage breaks under 3.13
- [x] 4.1 Run the full non-integration suite against the 3.13 environment: `uv run --all-packages pytest -m "not integration"`; fix any failures caused by the interpreter downgrade (none expected per design.md D4) — 543 passed. Note: collection was initially blocked by pre-existing Python-2-style `except X, Y:` syntax errors (7 occurrences across `runtime/task.py`, `packages/cloud-platform/cloud/sql_repository.py`, `packages/cloud-platform/cloud/internal_api/api.py`), introduced by commit `22d37ca9` (2026-07-13) unrelated to this change's scope. Fixed as a drive-by (parenthesized the tuples) per user direction, since they blocked verification on any Python version.
- [x] 4.2 Run `uv run --all-packages python -m compileall .` (or equivalent) across the workspace to catch any syntax-level incompatibility beyond what pytest collection would exercise — clean, no errors (scoped to project source dirs, excluding `.venv`)
- [x] 4.3 Ruff check/format on any files touched by this change — `uvx ruff check` all checks passed; `uvx ruff format --check` 3 files already formatted (ruff isn't a project dependency, run ephemerally via `uvx`)
## 5. Update documentation
- [x] 5.1 Update `docs/MACOS_IPHONE_SETUP.md` §4.2 to reflect the Python 3.13 baseline and remove/replace the now-obsolete "do not downgrade to 3.13 ad hoc" warning (lines ~156-158) with guidance that 3.13 is now the supported version
- [x] 5.2 Sweep `docs/MACOS_IPHONE_SETUP.md` and any other docs for stray `3.14` references introduced when the project originally targeted 3.14, and correct them to `3.13` — only remaining `3.14` mentions are the intentional upper-bound pin and the paddlepaddle-wheel-availability explanation
## 6. Final validation
- [x] 6.1 `git diff --check` (no whitespace errors) across all changed files — clean
- [x] 6.2 `openspec validate downgrade-python-3-13-paddleocr --strict` — valid
- [x] 6.3 Confirm all four `pyproject.toml` files and `Dockerfile`/`Jenkinsfile` agree on the same Python version, and `uv.lock` is committed alongside them — all agree on 3.13
@@ -395,7 +395,7 @@ def create_internal_router(
if payload.screenshot_base64 is not None:
try:
screenshot = base64.b64decode(payload.screenshot_base64)
except ValueError, TypeError:
except (ValueError, TypeError):
raise HTTPException(
status_code=status.HTTP_422_UNPROCESSABLE_CONTENT,
detail="screenshot_base64 is not valid base64",
@@ -1821,7 +1821,7 @@ def _device_enrollment_from_row(row: DeviceEnrollmentRow) -> Any:
try:
tags = list(json.loads(row.capability_tags_json))
except TypeError, ValueError:
except (TypeError, ValueError):
tags = []
return DeviceEnrollment(
device_id=row.device_id,
@@ -1840,7 +1840,7 @@ def _device_from_row(row: PooledDeviceRow) -> Any:
try:
tags = list(json.loads(row.capability_tags_json))
except TypeError, ValueError:
except (TypeError, ValueError):
tags = []
return PooledDevice(
device_id=row.device_id,
@@ -1857,7 +1857,7 @@ def _task_from_row(row: ScheduledTaskRow) -> Any:
try:
constraints_data = json.loads(row.constraints_json)
except TypeError, ValueError:
except (TypeError, ValueError):
constraints_data = {}
terminal_result = _parse_json_object(row.result_json)
return ScheduledTask(
@@ -1896,7 +1896,7 @@ def _load_optional_string_tuple(value: str | None) -> tuple[str, ...] | None:
return None
try:
parsed = json.loads(value)
except TypeError, ValueError:
except (TypeError, ValueError):
parsed = []
return tuple(item for item in parsed if isinstance(item, str))
@@ -1908,7 +1908,7 @@ def _load_optional_device_targets(
return None
try:
parsed = json.loads(value)
except TypeError, ValueError:
except (TypeError, ValueError):
parsed = []
return tuple(
(item[0], item[1])
@@ -2026,7 +2026,7 @@ def _parse_json_object(value: str | None) -> dict[str, Any] | None:
return None
try:
parsed = json.loads(value)
except TypeError, ValueError:
except (TypeError, ValueError):
return None
return parsed if isinstance(parsed, dict) else None
+1 -1
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@@ -3,7 +3,7 @@ name = "device-cloud-platform"
version = "0.1.0"
description = "Cloud scheduling, device pooling, plugins, and SDK for Device Agent Runtime."
readme = "README.md"
requires-python = ">=3.14"
requires-python = ">=3.13,<3.14"
dependencies = [
"alembic>=1.14.0",
"argon2-cffi>=25.0.0",
+1 -1
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@@ -2,7 +2,7 @@
name = "device-agent-runtime"
version = "0.1.0"
description = "Device-agnostic runtime for LLM-driven automation, with iPhone/WDA as the first driver."
requires-python = ">=3.14"
requires-python = ">=3.13,<3.14"
dependencies = [
"anthropic>=0.69.0",
"Appium-Python-Client>=5.1.1",
+1 -1
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@@ -286,7 +286,7 @@ class TaskRunner:
def _planner_accepts(self, name: str) -> bool:
try:
parameters = signature(self.planner.plan).parameters
except TypeError, ValueError:
except (TypeError, ValueError):
return True
return name in parameters or any(
parameter.kind is Parameter.VAR_KEYWORD for parameter in parameters.values()
Generated
+478 -773
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