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jolt/host/chez/seed
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Yogthos 4461179804 Fix direct-link crash on a non-fn var called as a function 
Under --direct-link a top-level def binds jv$<fqn> and app->app calls bound directly
to it. emit-invoke raw-applied that binding for any var callee, but only a fn-valued
def is a Scheme procedure: (def cfg {...}) then (cfg :a) emitted (jv$cfg :a), applying
a pmap -> "attempt to apply non-procedure". Maps/sets/keywords are invokable in Clojure
via jolt-invoke, which the indirect path used, so this only bit closed-world builds.

Track which direct-linked vars hold fn literals (direct-link-fns, registered at the def
site when the init op is :fn) and only raw-apply those. A non-fn callee falls through to
the jolt-invoke branch, which still uses the direct jv$ binding as the invoke target —
so the var-deref is still skipped, just not the dispatch.

Seed source: re-minted. Regression in directlink-test.ss (jolt-cw1o).
2026-06-23 23:34:28 -04:00
..
image.ss Fix direct-link crash on a non-fn var called as a function 2026-06-23 23:34:28 -04:00
prelude.ss Split 20-coll.clj into three collection-tier files 2026-06-23 02:06:24 -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.