b2f00821d7
Phase 1 requires nothing from anyone: agents keep pushing to GitHub, a timer syncs GitHub -> Windy Git every 15 minutes, CI runs on Veron against current code. Phase 2 flips one repo at a time, only when that repo is idle. Records the direction mistake honestly: the source of truth is wherever people are actually typing, not wherever the plan says it should be. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
66 lines
3.0 KiB
Markdown
66 lines
3.0 KiB
Markdown
# Migration plan — GitHub first, Windy Git second, flip per repo
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**Superseded the 2026-08-13 "daily driver" cutover, which was premature.**
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## What went wrong, recorded so it is not repeated
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Nine repos were migrated writable with **push-mirrors pointed at GitHub**. At
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the same time a dozen agent sessions on the Mac mini were pushing to GitHub
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continuously — so GitHub, not Windy Git, was where the live work actually was.
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A push-mirror force-updates refs. On its 8-hour timer it would have pushed Windy
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Git's stale copy **over live work, silently, with no conflict to notice.**
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All nine mirrors were removed before the first timer fired, and every GitHub
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repo was verified untouched (latest push predated the mirrors). **No work was
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lost.** The mistake was direction, and the lesson is: *the source of truth is
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wherever people are actually typing, not wherever the plan says it should be.*
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## Phase 1 — now. Nothing changes for anyone.
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Mac mini agents ──push──▶ GitHub ──sync every 15 min──▶ Windy Git ──▶ CI on Veron
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- **You do not have to tell your agents anything.** No remote changes, no
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coordination, no "everyone stop pushing." They keep working exactly as they
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are.
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- `windygit-sync.timer` runs `scripts/sync_from_github.sh` every 15 minutes.
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- Windy Git is **force-updated** on purpose: it holds nothing anyone depends on,
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so GitHub always wins and there is **no merge to reconcile**. That is the
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whole point of not flipping until a repo is quiet.
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- CI runs on Veron 1 against current code, on the 36 workflows that already say
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`runs-on: [self-hosted, linux, x64]`.
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Tracked repos live in `REPOS` in the script (currently 9 of 141).
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## Phase 2 — later, one repo at a time, only when that repo is idle
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For a single repo, when nobody is mid-work on it:
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1. Remove it from `REPOS` in `sync_from_github.sh` — **first**, or the sync will
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fight its authors and win.
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2. Point that repo's sessions at Windy Git:
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`git remote set-url origin https://app.windygit.com/windyadmin/<repo>.git`
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3. Add a push-mirror back to GitHub with `sync_on_commit: true`, so GitHub stays
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a current second copy.
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**Never flip more than one repo at a time, and never while an agent is working
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in it.** A dozen parallel sessions is exactly the situation where a big-bang
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cutover produces the dirty-branch mess this plan exists to avoid.
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## What is NOT on Windy Git
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**9 of 141 repos.** The whole GitHub account is 1.58 GB, so the rest is a
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capacity non-issue — it simply has not been imported yet. Add repos to the
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import list as they become useful to build.
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**`windy-pro` is excluded on purpose.** Six checkouts, a build counter forked
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three ways, two sessions recording different HEADs hours apart. Resolve which is
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current and write it down before importing (G11.5). The import script refuses it
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by name.
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## Backups
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`windygit-backup.timer`, nightly 04:17, `git bundle --all` + verify + `windgit`
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schema dump to R2, 30-day retention. **Restore rehearsed:** a bundle was pulled
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from R2, cloned, and its HEAD matched live `origin/main` exactly.
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