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jolt/host/chez/seed
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Yogthos b4d9eaa527 Read an unknown #tag as a tagged-literal value 
An unknown reader tag produced the reader's internal form
{:jolt/type :jolt/tagged :tag :#foo :form bar}, which tagged-literal? didn't
recognize and which leaked as a raw map when printed:

  (tagged-literal? (read-string "#foo bar"))  => false   ; want true
  (pr-str (quote [#foo bar]))                 => "[{:jolt/type :jolt/tagged ...}]"

Both the data path (rdr-construct-tag) and the compile path (emit-quoted) now
build a real tagged-literal for a tag with no registered reader, like Clojure's
*default-data-reader-fn*, so tagged-literal? / :tag / :form / printing all work.
clojure.edn reads raw forms through a separate __read-form-raw path and applies
:readers/:default itself, so it is unaffected.

Re-mint (backend + reader are seed sources); prelude byte-identical, image only.
make test green (selfhost holds, 0 new/stale), +2 unit rows.
2026-07-01 16:17:52 -04:00
..
image.ss Read an unknown #tag as a tagged-literal value 2026-07-01 16:17:52 -04:00
prelude.ss Fix seven more JVM divergences (rewrite-clj full suite) 2026-07-01 14:17:03 -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.