REATTESTATION.md

Re-attesting this catalogue's labs

Written on 2026-10-19, with values measured on disk rather than copied. Numbers age: validation-labs.json remains the source of truth for verdicts.

Why this page exists

On 2026-10-19, a re-attestation campaign recorded twelve false REDs in one catalogue before being stopped, and hung for twenty-three minutes in another. Neither cause had anything to do with the labs: a .venv whose shebangs still named the repository's former path after a rename, and a command-line tool waiting on network access the sandbox does not grant.

In both cases the validator looked like it was measuring the labs when it was measuring its own breakdown, and it wrote that into the record. A false RED costs more than a missing verdict: it sends people hunting for a defect in a lab that has none.

What this catalogue requires

• dsoxlab 0.5.4 or newer on the PATH. That is the engine version the record will carry, and the record states it for ALL labs: see the section on partial replays.
• The tools pinned by mise.toml, so run the command through mise exec --. Without it, a missing or differently versioned tool fails labs for reasons unrelated to their subject.
• No secret: this catalogue declares solutions: plaintext in its meta.yml, with its reason. Its solutions act as fixtures for the next lab, so they must stay readable.

The command

mise exec -- uv run scripts/valider-labs.py

A single lab, to exercise the harness before committing to all 7:

mise exec -- uv run scripts/valider-labs.py --lab <lab-id>

Starting with one lab is not a matter of principle. It is what separates an environment defect from a lab defect: if the single lab passes, the harness is sound; if it fails like the others, the harness is what needs fixing.

Current state

Current record: 7 VALIDE. Declared engine: no engine version recorded. Verdict dates: 2026-10-19. Cumulative duration of the last measured cycle: 1 minutes for 7 labs, excluding infrastructure provisioning and teardown.

The four traps that produce a false verdict

1. A .venv with dead shebangs. If the repository was renamed, the scripts in .venv/bin/ still point at the old path and no longer execute. The symptom is an identical failure on every lab, often on decrypting the solution. Check and fix:

head -1 .venv/bin/ansible-vault      # the path must exist
uv venv --clear && uv sync           # recreate it

2. uv run --no-sync on an empty venv. The flag assumes an already populated environment. On a fresh clone it raises ModuleNotFoundError before looking at a single lab. Run without --no-sync the first time.

3. A tool waiting on network access the sandbox does not grant. Measured on an octl --version that hung for twenty-three minutes: only the top-level command is exempt, a subprocess is not. If a campaign stops progressing, look at its child processes before suspecting a lab:

ps -eo pid,etimes,cmd | grep -E 'python.*valider[-]labs'
ps --ppid <validator-pid> -o pid,etimes,cmd

4. A partial replay makes the record's header false. The engine version is recorded once for the whole file, while verdicts are per lab. Replaying a single lab therefore rewrites that header, and the record then claims all its labs were attested with the current version. Either replay everything, or restore the record:

git checkout -- validation-labs.json

What the record does not say

It does not say which engine version attested each lab, only the one from the last campaign. This is a known gap, and it shows as soon as a campaign is partial.

Here the record carries no engine version at all: it has no root key, where six catalogues in the collection record genere_le, dsoxlab and each tool's version. Until that changes, nothing tells whether its verdicts hold for the current engine.

Why this catalogue's verdicts are stale

A single commit made them stale, and it is verified rather than taken from a list: ad1ce9d of 2026-10-17, "fix(labs): les messages d'échec en EN + FR (#7)", touching 8 test files.

So this is not gradual drift: it is a coordinated campaign to make failure messages bilingual, carried out on 2026-10-17 across eight catalogues and 289 test files. That commit's subject also names a defect fixed along the way, and that is what makes the replay mandatory: a test that graded wrongly invalidates the verdict it produced.

Not to be confused with the 2026-10-19 commit, which moved the doc_url host from blog. to www.. That one touches descriptors and documentation, changes no action, and makes nothing stale.

The record's shape decides what the site can say about it

This catalogue's record uses the plat shape, and the site reads no engine version from it, and therefore shows an attestation without saying what produced it.

The site's generator reads genere_le and dsoxlab only when the labs key is a dictionary: a record whose top-level keys are lab identifiers falls into another branch, which returns an empty date and tool. Fixing the field without fixing the shape would therefore change nothing, which is why both are stated together here.