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jolt/host/chez/seed
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Yogthos 6c88198115 JOLT_TRACE: map tail-frame history to ns/name (file:line) 
The eval path recorded only a frame's munged name, so a JOLT_TRACE backtrace was
a list of bare names. Register source for a runtime-compiled fn def when tracing
is on (keyed by the same munged name the entry push records), reusing the
source-registry the renderer already maps to "ns/name (file:line)". Direct-link
builds already registered via emit-def-cached; this covers the open-world eval
path. trace-off output is byte-identical (returns "" — seed mint / `jolt build`
unchanged), seed re-minted. A name shared across namespaces (e.g. -main) stays
bare, the existing ambiguity guard.

smoke asserts a file-backed project run maps a frame to ns/name (file:line).
2026-07-04 17:09:44 -04:00
..
image.ss JOLT_TRACE: map tail-frame history to ns/name (file:line) 2026-07-04 17:09:44 -04:00
prelude.ss Clojure 1.13 parity: req!, checked-keys destructuring, keyword array maps 2026-07-04 10:18:51 -04:00
README.md Docs: Chez-only, drop the Janet-era references and obsolete migration notes 2026-06-22 09:05:35 -04:00

README.md

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.