Extends the Phase-1 apply engine to manage app `vars` declaratively, alongside scripts/routes/triggers/secrets. The `Bundle` gains a `vars` map (key → JSON value; values are non-secret, so they live inline, unlike secret names). `diff_vars` is value-sensitive: a changed value is an Update, a live var the manifest dropped is a Delete (applied only under `--prune` — vars are prunable config, unlike never-pruned secrets). Writes go through `set_app_var_tx`/`delete_app_var_tx` inside the apply transaction (mirroring `PostgresVarsRepo::set` for `VarOwner::App`, scope `*`), so they commit atomically with the rest of the apply and roll back together on failure. `CurrentState` loads the app's OWN scope-`*`, non-tombstone vars (inherited group vars and tombstones are out of scope for the manifest); `state_token` folds them in so the bound-plan check catches an out-of-band `pic vars set` between plan and apply. Keys are validated against the same kebab rule as the vars admin API, and the apply handler now requires `AppVarsWrite` when vars are touched or `--prune` is set. Scope: app-owned vars at scope `*` (an app *is* an environment). Group vars via manifest and tombstone-via-manifest wait for the nested-manifest model. Unit tests cover the create/update/noop/delete diff and the state-token value sensitivity. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
PiCloud
A lightweight, self-hosted, event-driven serverless compute platform. Upload a Rhai script, get an HTTP endpoint. Designed to run on a single modest server with no idle CPU cost, and to scale out to a small cluster when you need it.
Status: Phase 1 — MVP scaffolding in progress.
The authoritative design lives in
serverless_cloud_blueprint.md.
Why
Existing serverless platforms are either cloud-locked, heavyweight, or both. PiCloud aims for the opposite end of the spectrum: one binary, one database, one reverse proxy — running on hardware you already own.
Architecture (one paragraph)
PiCloud splits into three logical services — manager (control plane: scripts, schedules, dashboard), orchestrator (per-node event ingress and dispatch), and executor (per-node Rhai sandbox) — each backed by a *-core Rust library. In MVP they run in a single process; in cluster mode they run as three binaries with one manager and one orchestrator + executor per node. Caddy fronts everything; PostgreSQL is the single source of truth.
See CLAUDE.md for working notes and serverless_cloud_blueprint.md for the full design.
Quick Start
Coming as scaffolding lands. For now:
# Rust toolchain (pinned via rust-toolchain.toml)
cargo check --workspace
# Run the all-in-one MVP binary (once main.rs is wired up)
cargo run -p picloud
Repository Layout
crates/
shared/ cross-cutting types
executor-core/ Rhai engine + sandbox
orchestrator-core/ event ingress, dispatch
manager-core/ control plane
picloud/ MVP all-in-one binary
picloud-{manager,orchestrator,executor}/ cluster-mode binaries (skeleton)
dashboard/ SvelteKit
caddy/ Caddyfile
docker/ Dockerfiles
docs/
git-workflow.md Trunk-based workflow
Contributing
See docs/git-workflow.md for the branching and commit conventions. TL;DR: trunk-based, short-lived branches, Conventional Commits, no force-pushing main.
License
TBD.