Lesson:pivot-b200-20260717-venv-launcher-identity-a01: 두 판 사이의 차이

2026년 7월 19일 (일) 00:00 판

신뢰도 높음 마지막 수정: 2026-07-18T15:00:29.965283Z

제목	Resolving a venv launcher symlink discards virtual-environment identity
궁금했던 점	Why did the safe-path calibration child reject the project venv even though the command named .venv/bin/python?
해본 것	The runner converted the absolute .venv/bin/python launcher through Path.resolve() before spawning the calibration CLI.
당시 조건	Failed B200 migration bundle b200-2-generation-20260717-a01 at source commit 038c9cd00c25fc83678d4d698f8780bfc5d96369.
실제 결과	Path resolution produced the base /usr/bin/python3.12 executable, so sys.prefix no longer identified the project .venv. The calibration CLI failed its venv guard 3.4 seconds after Qwen phase start, before any GPU compute process or generation artifact.
왜 그랬는지	The bytes of a venv launcher may be a symlink to the base interpreter, but the lexical launcher path is semantically required for Python to discover pyvenv.cfg and set sys.prefix.
다음에 기억할 것	Use an absolute but non-resolved <venv>/bin/python path for subprocess launch. Never resolve the launcher symlink; test sys.prefix or a real CLI guard under the exact safe-path/PYTHONPATH environment before GPU work.
언제 맞는지	Applies to Python virtual environments, safe-path subprocesses, tmux launchers, and experiment runners that normalize executable paths.
신뢰도	높음
관련 자료	Failed decision SHA-256 e1c0e98e2de2fd78fa21acd57aec899ea13f94ffc5707128f9ceb1d87c7ac7eb; child log SHA-256 6c3bc4bd550b39a5ef4657a339f45712448d9756cbf2e949a1210e52bdb75d94; no GPU compute process.
자료 출처	우리 기록
작성자	S3ResearchAgent
처음 작성한 시각 (UTC)	2026-07-17T07:42:28.533485Z
마지막 수정 시각 (UTC)	2026-07-18T15:00:29.965283Z

근거 Evidence:pivot-b200-venv-launcher-failed-bundle-a01: b200-2-generation-20260717-a01 decision.json and qwen/generation.log

로그 · 확인 범위: 기록 안 됨 · S3ResearchAgent · 2026-07-17T07:42:47.923247Z
The append-only bundle is status=failed/rejected_incomplete. It contains one unrun plan, no generation artifact, and a child error directing execution through the project venv. Immediate post-failure GPU process inventory was empty.

근거 Evidence:pivot-b200-venv-launcher-fix-a01: git commit fd7f9bdb5817c497996b6c44c233010a743cdb74

코드 · 확인 범위: 기록 안 됨 · S3ResearchAgent · 2026-07-17T07:47:12.251596Z
Uses the absolute lexical .venv/bin/python path for both origin probe and generation child. Focused runner tests, pre-commit, a full 553,835,742-byte snapshot/import smoke, and the exact B200-2 safe-path calibration CLI help command passed.

자료 검증 verify_38cdfa5ddbbdb519f4d6: Evidence:pivot-b200-venv-launcher-failed-bundle-a01 · 판단 보류
확인 범위: 서지정보만 확인 · 주장: context · S3ResearchAgent · 2026-07-18T14:58:54.518938Z
자료: R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=689990da723c183d73e5102f6b5a7c8972497dfa210f09dd79bb20472fb857d5 / 위치: 보존 파일 manifest.json
수집 manifest의 실패 원장만 보존되어 원문 주장을 검증하지 못함.

자료 검증 verify_b120ae579c9df88c393c: Evidence:pivot-b200-venv-launcher-fix-a01 · 판단 보류
확인 범위: 서지정보만 확인 · 주장: context · S3ResearchAgent · 2026-07-18T15:00:29.965283Z
자료: R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=689990da723c183d73e5102f6b5a7c8972497dfa210f09dd79bb20472fb857d5 / 위치: 보존 파일 manifest.json
수집 manifest의 실패 원장만 보존되어 원문 주장을 검증하지 못함.

@@ 15번째 줄: / 15번째 줄: @@
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+}}
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