jolt/host/chez/seed/README.md
Yogthos 45876998ad Docs: Chez-only, drop the Janet-era references and obsolete migration notes
Bring the docs in line with the actual implementation now that Chez is the sole
substrate.

Deleted the migration/spike/handoff artifacts that only documented the Janet
era or the port effort: the port plan, phase-0 and foundational-runtime spike
writeups (+ the stray root-level copy), the self-hosting design notes, the
architecture-refactor plan, and spike/chez/RESULTS.md.

Rewrote the current reference docs against the Chez facts: building-and-deps and
tools-deps (no jpm/build step — bin/joltc off the checked-in seed, deps via
jolt.deps into ~/.jolt/gitlibs), libraries (SQLite is built-in jdbc.core over
libsqlite3, not a Janet driver), the conformance/spec test-flow docs (the Chez
corpus runner + certify, no .janet harnesses), and the transient / type-hint /
seed-overlay design notes (Chez representations: mutable transients, flat
copy-on-write vectors, HAMT maps, the seed/overlay twin). Fixed the README
collections line (vectors aren't 32-way tries) and added the ffi/transient gate
targets. rfc 0001's numerics open-question is resolved (the Scheme tower).

Renamed the built-in HTTP adapter to jolt.http.server only (dropped the
ring-janet.adapter alias — a Janet-era name).
2026-06-22 09:05:35 -04:00

25 lines
1.3 KiB
Markdown

# Chez bootstrap seed
These two files are the **bootstrap compiler** for jolt — the seed that makes
the build self-hosting:
- `prelude.ss` — the `clojure.core` prelude (all tiers + clojure.string/walk/
template/edn/set/pprint) as Scheme `def-var!` forms.
- `image.ss` — the compiler image (`jolt.ir` + `jolt.analyzer` +
`jolt.backend-scheme`) as Scheme `def-var!` forms.
Both are **generated**, not hand-written. They are checked in because a fresh
checkout must be able to build jolt-on-Chez using only Chez: `host/chez/bootstrap.ss`
loads this seed, then rebuilds the prelude + image from the `.clj`/`.ss` sources via
the on-Chez compiler (read → analyze → emit, all on Chez). The seed is a **joint
byte-fixpoint**: rebuilding from an up-to-date seed reproduces it exactly.
`make selfhost` (`host/chez/selfcheck.sh`) runs `host/chez/bootstrap.ss` and diffs
the rebuilt artifacts against the checked-in seed.
## Re-minting
When the seed sources change (the core tiers, the compiler namespaces, the host
contract, the reader, `emit-image.ss`), the seed drifts and `make selfhost`
fails. Re-mint it by running `host/chez/bootstrap.ss` and writing the freshly
rebuilt prelude/image back to `host/chez/seed/prelude.ss` /
`host/chez/seed/image.ss`, then commit the refreshed files.