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MonstrofilandClaude Opus 5 0747bc500b Keep the config in a directory of our own (#16)
* Keep the config in a directory of our own

Flashing a stock FlashForge package back over the mod left a printer that
would not start. /usr/data is the DATA partition: a stock flash rewrites
/usr/prog and does not touch it, so the symlinked printer.base.cfg and the
ff-*.cfg beside it outlived the mod, pointing into a /usr/data/anvil that was
gone -- and Klipper treats an [include] it cannot resolve as fatal. Nothing of
ours runs during a stock flash, so there is no undo to write from inside the
mod. Not writing there is the only version of this that works.

The live config is /usr/data/anvil-data/config now, seeded once by
anvil-link-prog.sh with a copy of everything in /usr/data/config: printer.cfg
with the SAVE_CONFIG block of calibrated values at the end of it, and the stock
includes the mod neither ships nor parses. The seed test is printer.cfg, which
is copied last and through a temp name, so a machine that never finished seeds
again on the next boot rather than staying half-configured, and no update ever
re-seeds over a tuned file. It is outside $MODDIR, so the installer's
wipe-and-extract cannot reach it and nothing has to be stashed on /tmp.

Moonraker moved with it, and the lever is the data path rather than -c:
moonraker registers its config root as <data path>/config and nothing
configures that separately, so -c alone would move the file it READS while
file_manager kept registering FlashForge's directory. With -d
/usr/data/anvil-data its config directory is klippy's, which is also what
Mainsail's config editor lists. gcodes and logs stay where the machine keeps
them -- /usr/data/gcodes is klippy's [virtual_sdcard] path -- as symlinks
inside the data path, which works because register_directory() realpaths a
root that is a link. The database is carried across once, by the service,
below the stray-killer: the one point where moonraker is provably not running.

What an older release left in /usr/data/config STAYS there. A sweep could
delete the links but could not put stock's own printer.base.cfg back, because
the release that replaced it kept no copy -- and stock's run.sh force-copies
its own onto every flash, which repairs that directory whether or not anything
was swept.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Fn1k6kaHWhUrsmBfpxjUcG

* Ask the config-directory test about this installer, not the bake

test_flashforges_config_directory_is_never_written asserted that the mod's
filenames are absent from /usr/data/config. On a replica baked from a release
that still WROTE them, that is a question about the bake rather than about the
installer under test, and it fails for a reason the change cannot fix.

Remove them, run the installer over the top, then ask. The property is "an
install writes nothing there", and that is now what is measured.

Verified on the replica: qa/replica/test_upgrade.py is 18/18. The five
test_install.py assertions about the seeded directory still need a machine
baked from a package built with this branch -- work/out holds one from
2026-08-30, which symlinks into /usr/data/config as the old code did.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Fn1k6kaHWhUrsmBfpxjUcG

* Ask the config directory of a machine that has one

The five assertions about /usr/data/anvil-data/config could only pass on a
replica baked from a package built with this branch, and the bake installs
work/out/*.tgz -- whatever was built last. So they failed for a reason the
change cannot fix, and the gate could only go green after a full build, which
is exactly when nobody runs it.

Two different fixes, because the questions are two different kinds.

WHAT THE INSTALLED PACKAGE PRODUCED is still asked of the bake, but the
directory is now read off the machine instead of written down: PRINTER_CFG in
the installed etc/s6-rc/source/klipper/run is the command line klippy is
exec'd with, and therefore the only thing that decides which directory is
live. test_install.py and test_klippy_extras_import.py follow it, so the
include set, the graph walk and the user's printer.cfg are asked about
whichever side of the move the installed package was built on.

WHAT THIS CODE DOES is a new module, test_config_directory.py, which stages
anvil-link-prog.sh from the checkout and runs it -- the way test_upgrade.py
stages the installer. Only the timing is mocked: it seeds from a real
printer.cfg with FlashForge's real includes beside it, links the ff-*.cfg the
installed package really shipped, and reads MACHINE= out of the real
app_startup.sh. It asserts the seeding carries the machine's own marker, the
links point into $MODDIR, the chamber config matches the model, every include
resolves, a second run does not re-seed over an owner's edit, and the run adds
NOTHING to /usr/data/config.

That last one is a DELTA, not an absolute. A machine that has been through a
release which symlinked into FlashForge's directory still holds those links
and nothing can restore what they replaced. What this code owes is that it
adds nothing.

Verified on the replica: 135 passed, and the 10 failures are the same ones
master has on this bake -- ffmpeg, numpy, the timelapse component and the
hardware services, all missing from the 2026-08-30 package in work/out.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Fn1k6kaHWhUrsmBfpxjUcG

* Link every .cfg the packages ship, not a list of names

test_every_include_resolves_in_the_new_directory failed on CI:
printer.base.cfg has [include timelapse.cfg] and no timelapse.cfg was in
/usr/data/anvil-data/config, which Klipper treats as fatal.

anvil-link-prog.sh linked printer.base.cfg and the ff-*.cfg by name.
timelapse.cfg is anvil-timelapse's and matched neither, so it reached the
live directory only through the installer's copy of $MODDIR/config -- and
never at all on the `apk upgrade` path, where the link script is the only
thing that runs. A named list is a file that resolves on a fresh install
and goes stale the moment a package adds one.

So the rule is the glob: every .cfg in $MODDIR/config is linked, and the
installer skips every .cfg rather than the four names it knew. The .conf
beside them stay the installer's -- moonraker-custom.conf is the owner's
file to edit, so it is copied once and never linked to a package's copy.

test_the_mods_configs_are_links_into_moddir asks the same way now, so a
package whose config nothing includes is covered too.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YULWHVHyxKm2HE9kiPfEjP

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-08 10:05:36 +03:00
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