Windows env probe subprocess stalling session or prompt builds
Cluster 67964. Data as of
Nothing open on GitHub. Fix merged in #68045 on 20 Jul 2026. Check it covers your case.
The short answer
- Known?
- Yes. 4 related items grouped here, 1 issue already closed.
- Fix event
- A fix was merged to main in PR #68045. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
resolved, deciding PR #67999. That is separate from the fix event. - Still open
- Nothing open on GitHub.
The members all concern the environment probe on Windows, where an inherited capture pipe held open by a descendant process (such as an orphaned pip child) is described as able to block reads and stall new sessions or system-prompt builds. Several members propose bounding the probe or capturing its output via temp files instead of pipes.
Open issues0
Open PRs0
Fixes on record
-
#67999 fix(env-probe): stuck Windows probe can no longer deadlock system-prompt builds
files:
tests/tools/test_env_probe.py,tools/env_probe.py -
#68045 fix(env-probe): capture probe output via temp files so descendants can't stall the read (#67964 follow-up)
files:
tests/tools/test_env_probe.py,tools/env_probe.py
1 PR closed without merging
From the close comments: merged via another change 1
-
#67991 fix(tools): bound env probe subprocess so a Windows inherited pipe can't wedge sessions (#67964) · merged via another change →
e77ffdc,#68045,#67999,#67964
Closed issues · 1
- Closed#67964[Bug]: Windows env probe can deadlock all new sessions when an orphaned pip child keeps capture pipes open
How this cluster was grouped
-
Link evidence (
structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference. -
Pairwise link density
0.50: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36.1.00means every pair is linked.
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