my prefect server setup
prefect-metrics.waow.tech
python
orchestration
fix: use UV_PROJECT_ENVIRONMENT=/usr/local instead of sys.path injection
uv sync with UV_PROJECT_ENVIRONMENT=/usr/local installs packages into
the system Python's site-packages directly, so deps are available to
the prefect engine without any path manipulation hacks.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
+3
-16
-8
flows/enrich.py
-8
flows/enrich.py
···
1
-
# k8s: prefect uses system python, but uv sync in the pull step creates .venv/
2
-
# with extra deps (duckdb, prefect-dbt, etc). inject it into sys.path before any imports.
3
-
import sys as _sys
4
-
from pathlib import Path as _Path
5
-
_site = _Path(__file__).parent.parent / ".venv" / "lib" / f"python{_sys.version_info.major}.{_sys.version_info.minor}" / "site-packages"
6
-
if _site.exists() and str(_site) not in _sys.path:
7
-
_sys.path.insert(0, str(_site))
8
-
9
1
import subprocess
10
2
from datetime import timedelta
11
3
from pathlib import Path
-8
flows/gh_notifications.py
-8
flows/gh_notifications.py
···
11
11
(set in the work pool base job template or via deploy/results-pvc.yaml)
12
12
"""
13
13
14
-
# k8s: prefect uses system python, but uv sync in the pull step creates .venv/
15
-
# with extra deps (duckdb, etc). inject it into sys.path before any imports.
16
-
import sys as _sys
17
-
from pathlib import Path as _Path
18
-
_site = _Path(__file__).parent.parent / ".venv" / "lib" / f"python{_sys.version_info.major}.{_sys.version_info.minor}" / "site-packages"
19
-
if _site.exists() and str(_site) not in _sys.path:
20
-
_sys.path.insert(0, str(_site))
21
-
22
14
import datetime
23
15
import os
24
16
from dataclasses import dataclass
+3
scripts/patch_work_pool.py
+3
scripts/patch_work_pool.py
···
45
45
envs = props.setdefault("env", {}).setdefault("default", {})
46
46
envs["PREFECT_LOCAL_STORAGE_PATH"] = "/prefect-results"
47
47
envs["ANALYTICS_DB_PATH"] = "/prefect-analytics/analytics.duckdb"
48
+
# tell uv sync to install into system Python instead of creating a .venv —
49
+
# this makes deps available to the prefect engine without any sys.path hacks
50
+
envs["UV_PROJECT_ENVIRONMENT"] = "/usr/local"
48
51
49
52
await c.update_work_pool(
50
53
"kubernetes-pool",