fix(image): relocate backbone toolchain under /usr for exod confined execution - #226
Merged
Conversation
… exod's confined sandbox
backbone was catalog-verified and blessable on the fleet, but every confined
delegated step failed ModuleNotFoundError: lpp. exod's confined step
(infra/exec/sandbox.py) binds ONLY /usr /bin /lib* /etc + workspace + cargo,
and its env is the fixed {PATH,SNIP,RECORD_STORE} — no PYTHONPATH. The
toolchain lived under /opt (lpp on PYTHONPATH, tla2tools.jar, tlapm) = NOT
bound = invisible confined. Cooperative/in-container runs saw /opt and passed,
masking it; the FLEET uses the delegated confined path, which didn't.
Fix (body + modelcheck): lpp -> /usr/local/lib/lpp, imported via a .pth in
site-packages (read by site.py, works confined, no PYTHONPATH); tla2tools.jar
-> /usr/local/lib; tlapm -> /usr/local/lib/tlaps with the /usr/local/bin
symlink at a bound target. Everything the snippet needs is now under the
bound /usr.
Proven in an amd64 body image, all 3 perks inside exod's REAL confined sandbox
(delegate.materialize_workspace + sandbox.run_confined): validate ok / tlc ok /
tlaps ok (17 obligations). Also proven the confined channel itself is healthy
(compute:smoke RC 0) — the earlier 'everything fails' was per-skill causes.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
The bug
backbone was verified + blessable on the fleet, but every confined delegated step failed
ModuleNotFoundError: lpp. exod's confined sandbox binds only/usr /bin /lib* /etc+ workspace + cargo, with env{PATH,SNIP,RECORD_STORE}(no PYTHONPATH). The toolchain was under/opt(lpp on PYTHONPATH,tla2tools.jar, tlapm) — unbound, invisible confined. Cooperative/in-container runs saw/optand passed, masking it; the fleet uses the confined path.The fix
lpp →
/usr/local/lib/lpp+ a .pth in site-packages (works confined, no PYTHONPATH);tla2tools.jar→/usr/local/lib; tlapm →/usr/local/lib/tlapswith a bound-target symlink. Everything the snippet needs is now under the bound/usr.Proof
amd64 body image, all 3 perks inside exod's real confined sandbox (
materialize_workspace+run_confined): validate ok · tlc ok · tlaps ok (17 obligations). Confined channel itself confirmed healthy separately (compute:smokeRC 0).Merge → dispatch-verify the body build → tag v1.7.4.
🤖 Generated with Claude Code