Two invariants had been established by hand and left ungated, which is the
"a remedy that only works if someone remembers" pattern:
- scripts/check_ignore_consistency.sh fails the commit if any TRACKED file
is also gitignored. .binary-allowlist used to *instruct* the reader to
re-run that check; now it is enforced. Verified both ways -- passes on the
tree, and fails when an ignored file is force-added.
DOCS-runnability.md now really has two columns. Each environment writes only
its own gates/runnability-<env>.tsv and the doc renders from both, so a CI run
cannot clobber the local results. The ci tsv is gitignored: committing a copy
generated here would label this machine's capabilities as the runner's.
Rendering it surfaced a classic bug -- awk's NR==FNR idiom silently swallows
the SECOND file when the first is empty, so the table came out with a header
and no rows. It compares FILENAME instead.
runnability.yml deliberately does NOT diff against a committed baseline. A
status is a property of the machine, so `runnable` locally and `blocked` on a
runner is correct rather than drift, and diffing would make the workflow red
by construction. It fails on `error` instead -- a runner that crashes or
reports an unknown kind.
Then five more courses were actually run, because EADS alone had produced four
real bugs and one sample proves nothing:
- ECOAR and EPFU build (nasm + 32-bit gcc, and gcc respectively).
- ECOTE's 17 test modules could not run AT ALL. Its package is named `code/`,
which shadows the standard library: pytest's debugging plugin imports pdb,
pdb imports code, and it got this directory instead, so the suite died
with an INTERNALERROR before collecting a single test. Renamed to
translator/ with all 17 imports updated -- 26 tests now pass.
- A LaTeX report builds. That one exposed a hazard rather than a bug:
latexmk wrote its PDF beside the source, and in a course where the built
name matches the submitted one it would have silently overwritten a
tracked deliverable. Both the LaTeX and C++ runners now build into a
gitignored build/, and rebuilding ECOGR leaves `git status` empty.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0172dj34FDpao6wsix8ZuCzE
Untracked (--cached, so they stay on disk): 76 LaTeX artifacts, 7 .xdv XeTeX
intermediates, 18 -eps-converted-to.pdf from epstopdf, 32 files of .NET
obj/Debug/net6.0 output including three copies of lab2.dll, 16 .class/.o, the
9 MB Nx cache with its native .node, and an entire committed Python
virtualenv at ECOTE/program/ecote (python 3.10.10, 18 files).
The existing 407-line LaTeX .gitignore was NOT unused as I first assumed --
it already covered *.aux and *.class, and the artifacts simply predate it. So
this appends the categories it missed (*.o, obj/, .venv/, .nx/, target/)
rather than rewriting something that was working.
The second half is the more interesting bug. Auditing with
git ls-files | git check-ignore --stdin --no-index
found 130 files that were tracked AND ignored. That combination fails
silently: `git add` on such a file is not an error, the edit just never
lands. Causes were dist/ swallowing the vendored jQuery/Bootstrap bundle,
.vscode/ and .idea/, and -- the good one -- the LaTeX template's man-page
patterns *.[1-9] and *.[1-9][0-9] matching EPFU's date-named report
directories, so doc/21.11/ read as a man page section and took report.pdf
and seven screenshots with it.
32 of those 130 turned out to be more build output and were untracked too;
the rest got targeted ! overrides. The first attempt used a blanket
!NotProgramming/EMISY/** which re-enabled that course's own LaTeX artifacts,
so it is narrowed to the *.1 schematic exports that actually needed it.
TRAK's nested .gitignore excluded the .vscode DIRECTORY, which stops git
descending, so no root-level ! can reach inside -- that one had to be fixed
at its source.
Both invariants now verified: 0 tracked files ignored, and 0 of the 189
untracked artifacts leaked back into view.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0172dj34FDpao6wsix8ZuCzE
