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chore(windows): add PYTHONIOENCODING and PYTHONUTF8 to backend Makefile targets (#3069)

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langgraph-api emits → and ⚠️ characters in version-check log lines.
On Windows with cp1252 as the default stream encoding, each such line
throws a UnicodeEncodeError inside the logging handler, littering
startup output with tracebacks (though the server still boots).

#1550 already fixed this for scripts/check.py via stream.reconfigure().
Apply the same treatment to the backend Makefile dev/gateway/test
targets by setting PYTHONIOENCODING=utf-8 and PYTHONUTF8=1 before each
uv run invocation. Both variables are no-ops on Linux/macOS where UTF-8
is already the default.

Closes #2337

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
john lee
2026-05-21 16:42:26 +08:00
committed by GitHub
parent 31513c2ccb
commit ca7042dec2
1 changed files with 3 additions and 3 deletions
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backend/Makefile
+3 -3
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@@ -2,13 +2,13 @@ install:
uv sync
dev:
PYTHONPATH=. uv run uvicorn app.gateway.app:app --host 0.0.0.0 --port 8001 --reload
PYTHONPATH=. PYTHONIOENCODING=utf-8 PYTHONUTF8=1 uv run uvicorn app.gateway.app:app --host 0.0.0.0 --port 8001 --reload
gateway:
PYTHONPATH=. uv run uvicorn app.gateway.app:app --host 0.0.0.0 --port 8001
PYTHONPATH=. PYTHONIOENCODING=utf-8 PYTHONUTF8=1 uv run uvicorn app.gateway.app:app --host 0.0.0.0 --port 8001
test:
PYTHONPATH=. uv run pytest tests/ -v
PYTHONPATH=. PYTHONIOENCODING=utf-8 PYTHONUTF8=1 uv run pytest tests/ -v
lint:
uvx ruff check .