Supported Libraries

These Clojure libraries are confirmed to load and pass their conformance checks on Jolt. Most load unmodified from git; a few rely on host shims Jolt provides. See the examples repository for runnable projects.

Web and routing

• ring-core — via :deps/root "ring-core", on the ring-app example.
• ring-codec — URL/form encoding.
• ring-defaults — the standard middleware stack (params, static resources + content-type, session, security headers); session/CSRF crypto via jolt-lang/jolt-crypto (OpenSSL).
• reitit-core — data-driven routing; the reitit.Trie Java class is mirrored by jolt-lang/router.
• integrant — data-driven system configuration (#ig/ref), with its dependency and meta-merge deps.

Data and schemas

• malli — data schema validation, on the malli-app example.
• honeysql — SQL formatter and helpers.
• clojure.data.json — JSON reading and writing.
• clojure.spec.alpha — data specs.
• core.match — pattern matching.
• core.cache — caching (Basic/FIFO/LRU/LU/TTL/Soft + wrapped), over data.priority-map.
• core.memoize — function memoization over core.cache.
• core.async — CSP channels and go blocks (<!/>!/alts!, pipeline, mult/mix/pub/sub) on real OS threads.
• core.logic — relational logic programming (unification, run/fresh/conde, finite domains).
• math.combinatorics — permutations, combinations, subsets, selections, cartesian products, partitions.
• core.contracts — programming by contract (contract/with-constraints/provide), over core.unify.
• data.zip — zipper navigation, including clojure.data.zip.xml; XML via jolt-lang/xml (which ships clojure.xml/parse).
• data.csv — reading and writing CSV.
• data.codec — base64 encode/decode over byte arrays.
• data.priority-map — priority maps (keyfn / custom comparator), with subseq/rsubseq.
• tools.macro — local macros (macrolet/symbol-macrolet), mexpand/mexpand-all.
• algo.monads — monad macros and monads (maybe/seq/state/writer/reader/…), over tools.macro.
• test.check — property-based testing (generators, quick-check, shrinking).
• transit-jolt — Transit (JSON) read/write.
• yamlstar — YAML load/dump (pure-Clojure parser, JSON-safe integer policy).
• jolt-yaml — YAML over the system libyaml (jolt.yaml load/dump, clj-yaml.core compat, SnakeYAML engine surface).
• medley — collection utilities.
• config — environment configuration.
• aero — EDN configuration with tag literals (#ref/#env/#or/#profile/#long/…).

Databases

• clojure.jdbc — via jolt-lang/db's jdbc.core, over built-in SQLite access (libsqlite3 through Chez's FFI).
• migratus — database migrations over jolt-lang/db.

Templating, markup, text

• Selmer — Django-style templates.
• hiccup — HTML from Clojure data, on the hiccup-app example.
• markdown-clj — Markdown to HTML, on the markdown-app example.
• cuerdas — string manipulation.

Date and time

• tick — date/time over Jolt's java.time; #time/… literals via time-literals.

Logging

• tools.logging — runs verbatim over a native clojure.tools.logging.impl stderr backend.

Loading a library is per-function: a namespace can load with most functions working and a few not. If something is missing, it's usually a clojure.core function Jolt doesn't implement yet or a Java class to shim — see Host Interop.