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rdbms-playground/docs/adr/0055-curl-sh-install-script.md
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feat(dist): crates.io + binstall + Windows install.ps1 + license files
Distribution prep on the road to public availability (plan steps 2–3a).

- Cargo.toml: publish-ready (drop publish=false; homepage/keywords/
  categories/exclude) + [package.metadata.binstall] with per-target
  overrides (linux-gnu->musl, windows-msvc->gnu/gnullvm). dry-run clean.
- scripts/install.ps1: Windows `irm | iex` one-liner — written but
  untested here (no PowerShell; validate on Windows). README Windows block.
- README.md (new); LICENSE-MIT + LICENSE-APACHE (dual, (c) Lazy
  Evaluation Ltd); CONTRIBUTING.md (inbound=outbound dual-license note).
- ADR-0055 Amendment 1 (install.ps1), ADR-0056 (crates.io/binstall),
  README index + plan updates.

The actual `cargo publish` remains a gated maintainer step (token,
irreversible) at a new tagged release; real cargo-binstall validation
pending.
2026-06-17 21:25:45 +00:00

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4.3 KiB
Markdown

# ADR-0055: `curl | sh` install script (`scripts/install.sh`)
## Status
Accepted — **implemented 2026-06-17** (plan:
`docs/plans/20260616-public-availability.md`, step 2). Step 2 on the road
to public availability, building on ADR-0054 (versioned releases) and
ADR-ci-001/003 (the Gitea releases it downloads from). Tracked by the
plan + this ADR (no Gitea issue — user decision, 2026-06-17).
## Context
Until now, installing meant: find the releases page, work out which of
the six assets matches your machine, download it, `chmod +x`, move it
onto `PATH`, and (on macOS) wonder about Gatekeeper. That is too much
friction for a teaching tool aimed at beginners. The Gitea releases are
**publicly downloadable** (confirmed), with deterministic asset names
(`rdbms-playground-<tag>-<target>[.exe]`) and `.sha256` sidecars
(ADR-ci-003), and a `releases/latest` API — enough to script a one-liner
install.
## Decision
Ship **`scripts/install.sh`**, run as
`curl -fsSL <gitea-raw>/scripts/install.sh | sh`:
- **POSIX `sh`** (no bashisms) — it runs under the `sh` of `curl | sh`;
kept **shellcheck-clean** (`-s sh`).
- **Platform detection** from `uname` → target triple: Linux →
`<arch>-unknown-linux-musl` (the fully-static build — one universal
Linux artifact, no glibc/version coupling), macOS → `<arch>-apple-darwin`;
`x86_64`/`amd64` and `aarch64`/`arm64` both map. **Windows is rejected**
with a pointer to Scoop/winget/the releases page (the binary is a `.exe`,
not a `curl|sh` target).
- **Version:** the `releases/latest` API tag by default; `RDBMS_VERSION`
pins a specific tag.
- **Integrity:** always download the `.sha256` sidecar and **verify**
(`sha256sum`/`shasum -a 256`); a mismatch aborts the install. HTTPS only.
- **Install location:** `~/.local/bin` by default (user-writable, no
sudo), overridable via `RDBMS_INSTALL_DIR`; prints a PATH hint if the
dir isn't on `PATH`.
- **macOS note:** a `curl` download is **not** Gatekeeper-quarantined, so
the binary runs as-is even while it is only ad-hoc-signed; proper
Developer-ID signing + notarization (for *browser* downloads) is a
separate, postponed task (see the plan's signing item).
- **Testing seams:** `RDBMS_OS`/`RDBMS_ARCH` force detection and
`--print-target` prints the resolved triple and exits — so the mapping
is checkable without a download.
### Rejected / deferred
- **Hosting the script on the website domain** (Cloudflare): nicer URL,
but adds a moving part; the **Gitea repo raw URL** is simplest and the
binaries live there anyway (user decision). The website may later
*reference* the same command.
- **Uploading `install.sh` as a release asset** for a stable link:
optional; the branch raw URL is fine for now.
## Amendment 1 — `install.ps1` (Windows) added (2026-06-17)
Windows was originally deferred to Scoop/winget; the user opted for **both**
a PowerShell one-liner now *and* package managers later. Added
**`scripts/install.ps1`** (`irm <url> | iex`): maps the host CPU to our
`*-windows-gnu`/`-gnullvm` `.exe`, resolves the latest release (or
`-Version`/`RDBMS_VERSION`), downloads + **SHA-256-verifies**, installs to
`%LOCALAPPDATA%\Programs\rdbms-playground` (`-InstallDir`/`RDBMS_INSTALL_DIR`
override), and adds that dir to the **user PATH**. **Caveat:** unlike
`install.sh` (verified end-to-end), this was **written but not tested from
this environment** (no PowerShell available) — validate on a real Windows
host. Scoop/winget (D3) remain the idiomatic package-manager routes.
## Consequences
- A first-time user runs one line and gets a checksum-verified binary on
`PATH`. The website's install copy (website branch, separate agent) can
point at this command.
- **Verified end-to-end** (2026-06-17) against the live public `v0.1.0`:
all four Linux/macOS platform mappings + Windows/unknown-arch rejection;
pinned and latest paths; checksum verification incl. a tamper-rejection
check; install + run on Linux x86_64. (The installed `v0.1.0` predates
`--version`, ADR-0054 — a non-issue, and the reason to cut a new
release.)
- **No automated regression guard in CI yet:** shellcheck isn't in the
flake, and there's no shell-test harness here (no bats). Recommended
follow-up: add a `shellcheck scripts/*.sh` gate (touches ADR-ci-002 —
needs shellcheck in the devShell). For now the guard is local
shellcheck + the documented end-to-end verification.