feat(gbrain-install): remove the v0.18.2 pin, install latest + version floor + doctor self-test (#1744)

The installer pinned gbrain at v0.18.2 while gbrain shipped v0.41.x — ~23 versions
behind. Remove the hard pin: a fresh clone now stays on the latest default-branch
HEAD. --pinned-commit <sha> still pins for reproducibility.

Unpinning removes the version gate the pin provided, so add two install-time gates
that fail closed (exit 3, matching the existing PATH-shadow/version-mismatch posture):
- MIN_GBRAIN_VERSION floor (0.20.0, the sources-list/federated surface gstack needs):
  refuse an install below it.
- gbrain doctor --fast self-test when a brain config already exists (re-install /
  detected clone): refuse to leave a broken gbrain in place. Pre-init installs skip
  it; the full /sync-gbrain --dry-run self-test runs from /setup-gbrain after init.

Docs updated (USING_GBRAIN_WITH_GSTACK.md no longer says 'edit PINNED_COMMIT').
Detect-install tests bump the success-path fixtures above the floor and add a
below-floor exit-3 test. The gbrain-side asks (root #1526 fix, --keep-storage,
remove-lease, capability command, ingest-resume, integration CI) are written to
.context/gbrain-asks.md for filing against garrytan/gbrain.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Garry Tan 2026-05-30 10:55:32 -07:00
parent 30458df38f
commit 165fda1162
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3 changed files with 82 additions and 13 deletions

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@ -379,7 +379,7 @@ Another gstack session in a sibling Conductor workspace may be holding a lock on
## Related skills + next steps
- `/health` — includes a GBrain dimension (doctor status, sync queue depth, last-push age) in its 0-10 composite score. The dimension is omitted when gbrain isn't installed; running `/health` on a non-gbrain machine doesn't penalize that choice.
- `/gstack-upgrade` — keeps gstack itself up to date. Does NOT upgrade gbrain independently. To bump gbrain, update `PINNED_COMMIT` in `bin/gstack-gbrain-install` and re-run `/setup-gbrain`.
- `/gstack-upgrade` — keeps gstack itself up to date. Does NOT upgrade gbrain independently. gbrain installs at the latest HEAD by default; to refresh it, `git pull` in your gbrain clone (default `~/gbrain`) and re-run `/setup-gbrain`. Pin a specific commit with `gstack-gbrain-install --pinned-commit <sha>` if you need reproducibility. Installs below the minimum tested version are refused.
- `/retro` — weekly retrospective pulls learnings and plans from your gbrain when memory sync is on, letting the retro reference cross-machine history.
Run `/setup-gbrain` and see what sticks.

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@ -19,9 +19,14 @@
# - git
# - network reachability to https://github.com
#
# The pinned commit is declared here rather than resolved dynamically so
# upgrades are explicit and reviewable. Update PINNED_COMMIT when gstack
# verifies compatibility with a new gbrain release.
# gbrain installs at the latest default-branch HEAD by default — the hard pin
# was removed in #1744 (it had drifted ~23 versions behind). Pass
# --pinned-commit <sha> to install a specific commit for reproducibility. A
# minimum-version floor (MIN_GBRAIN_VERSION) hard-fails the install when the
# resulting gbrain is too old for gstack's sync integration, and a fast
# `gbrain doctor` self-test hard-fails a broken install when gbrain is already
# configured. This keeps the version gate that the pin used to provide without
# freezing users 23 releases behind.
#
# Env:
# GBRAIN_INSTALL_DIR — override default install path (~/gbrain)
@ -33,8 +38,14 @@
set -euo pipefail
# --- defaults ---
PINNED_COMMIT="08b3698e90532b7b66c445e6b1d8cdfe71822802" # gbrain v0.18.2
PINNED_TAG="v0.18.2"
# No version pin by default — install the latest default-branch HEAD (#1744).
# --pinned-commit <sha> overrides for reproducibility.
PINNED_COMMIT=""
PINNED_TAG=""
# Minimum gbrain version gstack's integration is known to work with. The
# `sources list --json` wrapped-object shape + federated sources landed by 0.20;
# older predates the surface gstack drives. Hard-fail below this floor (#1744).
MIN_GBRAIN_VERSION="0.20.0"
GBRAIN_REPO_URL="https://github.com/garrytan/gbrain.git"
DEFAULT_INSTALL_DIR="${GBRAIN_INSTALL_DIR:-$HOME/gbrain}"
INSTALL_DIR="$DEFAULT_INSTALL_DIR"
@ -113,7 +124,7 @@ elif [ -n "$DETECTED_CLONE" ]; then
else
# Fresh clone path.
if $DRY_RUN; then
log "DRY RUN: would clone $GBRAIN_REPO_URL @ $PINNED_COMMIT → $INSTALL_DIR"
log "DRY RUN: would clone $GBRAIN_REPO_URL ${PINNED_COMMIT:+@ $PINNED_COMMIT }→ $INSTALL_DIR (latest HEAD unless --pinned-commit)"
exit 0
fi
if [ -d "$INSTALL_DIR" ]; then
@ -121,8 +132,12 @@ else
fi
log "cloning $GBRAIN_REPO_URL → $INSTALL_DIR"
git clone --quiet "$GBRAIN_REPO_URL" "$INSTALL_DIR"
( cd "$INSTALL_DIR" && git checkout --quiet "$PINNED_COMMIT" )
log "pinned to $PINNED_COMMIT${PINNED_TAG:+ ($PINNED_TAG)}"
if [ -n "$PINNED_COMMIT" ]; then
( cd "$INSTALL_DIR" && git checkout --quiet "$PINNED_COMMIT" )
log "checked out pinned commit $PINNED_COMMIT${PINNED_TAG:+ ($PINNED_TAG)}"
else
log "installed latest gbrain (default-branch HEAD)"
fi
fi
if $DRY_RUN; then
@ -195,6 +210,44 @@ fi
log "installed gbrain $actual_version from $INSTALL_DIR"
# --- minimum-version floor (#1744) ---
# Unpinning means new installs track gbrain HEAD. Hard-fail if the resulting
# version is below the floor gstack's sync integration needs — same exit-3 posture
# as the PATH-shadow / version-mismatch failures above. A warning here is exactly
# how the data-loss class slipped through, so this gate fails closed.
version_lt() {
# 0 (true) when $1 < $2 by version sort; equal versions are NOT less-than.
[ "$1" = "$2" ] && return 1
[ "$(printf '%s\n%s\n' "$1" "$2" | sort -V | head -1)" = "$1" ]
}
if version_lt "$actual_norm" "$MIN_GBRAIN_VERSION"; then
echo "" >&2
echo "gstack-gbrain-install: gbrain $actual_version is below the minimum gstack-tested version ($MIN_GBRAIN_VERSION)." >&2
echo " gstack's sync integration needs the v0.20+ source/list surface." >&2
echo " Fix: update the gbrain clone at $INSTALL_DIR to a newer release (git pull), then" >&2
echo " re-run /setup-gbrain. Or pass --pinned-commit <sha> to install a specific newer commit." >&2
echo "" >&2
exit 3
fi
# --- functional self-test when gbrain is already configured (#1744) ---
# When a brain config exists (re-install / detected clone), run a fast doctor as
# a hard gate so a broken gbrain is caught at setup, not at data-loss time.
# Pre-init installs skip this (config not written yet); the full
# `/sync-gbrain --dry-run` self-test runs from /setup-gbrain after `gbrain init`.
_GBRAIN_HOME_CHECK="${GBRAIN_HOME:-$HOME/.gbrain}"
if [ -f "$_GBRAIN_HOME_CHECK/config.json" ]; then
if ! gbrain doctor --fast >/dev/null 2>&1; then
echo "" >&2
echo "gstack-gbrain-install: gbrain $actual_version installed but 'gbrain doctor --fast' failed." >&2
echo " Refusing to leave a broken gbrain in place. Run 'gbrain doctor' to see what's wrong," >&2
echo " fix it, then re-run /setup-gbrain." >&2
echo "" >&2
exit 3
fi
log "gbrain doctor --fast passed"
fi
# v1.40.0.0 post-install validation (T6 / codex review #19): --ignore-scripts
# may skip artifacts gbrain needs at runtime, especially on Windows
# MSYS/MINGW where we DID pass --ignore-scripts. `gbrain --version` above

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@ -204,14 +204,30 @@ describe('gstack-gbrain-install D19 PATH-shadow validation', () => {
}
test('passes when install-dir version matches `gbrain --version` on PATH', () => {
// Version must be >= MIN_GBRAIN_VERSION (0.20.0) floor (#1744).
const installDir = seedInstallDir('0.41.29');
const fakeBin = seedFakeGbrainBinary('0.41.29');
try {
const r = run(INSTALL, ['--validate-only', '--install-dir', installDir], {
env: { PATH: `${fakeBin}:${SAFE_PATH}` },
});
expect(r.status).toBe(0);
expect(r.stdout).toContain('installed gbrain 0.41.29');
} finally {
fs.rmSync(installDir, { recursive: true, force: true });
fs.rmSync(fakeBin, { recursive: true, force: true });
}
});
test('hard-fails (exit 3) when the installed gbrain is below the version floor (#1744)', () => {
const installDir = seedInstallDir('0.18.2');
const fakeBin = seedFakeGbrainBinary('0.18.2');
try {
const r = run(INSTALL, ['--validate-only', '--install-dir', installDir], {
env: { PATH: `${fakeBin}:${SAFE_PATH}` },
});
expect(r.status).toBe(0);
expect(r.stdout).toContain('installed gbrain 0.18.2');
expect(r.status).toBe(3);
expect(r.stderr).toContain('below the minimum gstack-tested version');
} finally {
fs.rmSync(installDir, { recursive: true, force: true });
fs.rmSync(fakeBin, { recursive: true, force: true });
@ -219,8 +235,8 @@ describe('gstack-gbrain-install D19 PATH-shadow validation', () => {
});
test('tolerates a leading "v" in `gbrain --version` output', () => {
const installDir = seedInstallDir('0.18.2');
const fakeBin = seedFakeGbrainBinary('v0.18.2');
const installDir = seedInstallDir('0.41.29');
const fakeBin = seedFakeGbrainBinary('v0.41.29');
try {
const r = run(INSTALL, ['--validate-only', '--install-dir', installDir], {
env: { PATH: `${fakeBin}:${SAFE_PATH}` },