Clojure Deref (Jun 2, 2026)

Welcome to the Clojure Deref! This is a weekly link/news roundup for the Clojure ecosystem (feed: RSS).

Upcoming Events

•Clojure real-world-data 61: Jun 5

•Clojure/Conj 2026: Sep 30-Oct 2. Charlotte, NC, USA. CFP is open until June 14. Early Bird tickets.

•EuroClojure 2027: May 19-21, 2027. Prague, Czech Republic. Join the mailing list

Podcasts, videos, and media

•Building Command Line Tools with lambdaisland/CLI/Babashka - Arne Brasseur - ClojureTV

•Clojure Corner: Interview with Timothy Pratley - Flexiana

•Cross-rendering TUI to Web using charm.clj + Hyperlith - Kyle S Passarelli

•Swish: Using Claude Code to Create a Lisp in Swift - sequence utils - Rod Schmidt

•HumbleUIMiniIDE.Lesson1 - Руслан Сорокин

•HumbleUMiniIDELesson2 - Руслан Сорокин

Blogs, articles, and news

•Clojure & Co: Discover, compare and try out dialects from the Clojure family of languages. - Ingy döt Net

•Designing Kolam in Clojure Through Visit Order and Tangency – Clojure Civitas - Timothy Pratley

•jj fix 🩷 standard-clj - Mikko Koski

•My thoughts after using Clojure for about a month - Case Duckworth

•Teaching LLMs to one-shot complex backends at scale, report #1 - Nathan Marz

•Data Governance in Versioned Systems - Christian Weilbach

•Squint Browser REPL - Michiel Borkent

•cljs-ajax 0.9.0-beta1 is out - Julian Birch

•Fast HTML-to-Markdown extraction from any URL, for LLMs (r11y) - Dan Peddle

•Tracing rays with jank - Jeaye Wilkerson

•I Deleted the Hand-Written Version of BigConfig - Alberto Miorin

•Edsger – a remarkable Clojure REPL - Daniel Janus

•Started Learning Rust - Karthikeyan A K

Libraries and Tools

Debut release

•repl-agent - An MCP server that gives AI agents direct access to a live Clojure nREPL session

•continuity-auth - Respect-weighted rate limits for the open web

•lambda-sketch - Probabilistic data structures and sketching algorithms in Clojure

•pod-babashka-gozxing - A babashka pod for reading and writing QR codes, backed by the Go library gozxing (a port of ZXing).

•edsger - A reMarkable handwritten almost-Clojure REPL

•katzen - Generalized algebraic theories and categorical programming for Clojure.

Updates

•tools.build 0.10.14 - Clojure builds as Clojure programs

•clojure_cli 1.12.5.1654 - Clojure CLI

•tools.deps 0.31.1629 - Deps as data and classpath generation

•deps.clj 1.12.5.1654 - A faithful port of the clojure CLI bash script to Clojure

•memento-redis 2.0.33 - Memento cache backed by Redis

•deft 0.1.5 - A collection of macros designed to address issues with objects in Clojure.

•quiescent 0.2.6 - A Clojure library for composable async tasks with automatic parallelization, structured concurrency, and parent-child and chain cancellation

•teensyp 0.5.5 - A small, zero-dependency Clojure TCP server that uses Java NIO

•apie 1.0.2 - Apie 🙈 OpenAPI Service Validator

•fulcro-rad 1.6.24 - Fulcro Rapid Application Development

•statecharts 1.4.0-RC18 - A Statechart library for CLJ(S)

•guardrails 1.3.2 - Efficient, hassle-free function call validation with a concise inline syntax for clojure.spec and Malli

•clojure-desktop-toolkit 0.7.0 - Create native state-of-the-art desktop applications in Clojure using Eclipse’s SWT graphics toolkit.

•datalevin 0.10.18 - A simple, fast and versatile Datalog database

•optimus 2026.05.27 - A Ring middleware for frontend performance optimization.

•cli 1.30.130 - Opinionated command line argument handling, with excellent support for subcommands

•clj-oa3 0.4.0 - Clojure client library for OpenADR 3 (Martian HTTP, entity coercion, Malli schemas)

•svar 0.7.0 - Type‑safe LLM output for Clojure. Works with any text‑only model.

•portal 0.65.0 - A clojure tool to navigate through your data.

•partial-cps 0.1.55 - A lean and efficient continuation passing style transform, includes async-await support.

•spindel 0.1.15 - Cross-platform FRP runtime with a git-like memory model.

•cljs-ajax 0.9.0-beta1 - simple asynchronous Ajax client for ClojureScript and Clojure

•deps-new 0.12.2 - Create new projects for the Clojure CLI / deps.edn

•ghosttyfx 0.1.169.11 - Cljfx wrapper of GhosttyFX

•pg2 0.1.49 - A fast PostgreSQL driver for Clojure

•let-go 1.9.0 - Almost Clojure written in Go.

•gsheetplus 1.1.3 - Low-level and high-level wrapper to work with Google Sheets. Reading, writing and sheet management.

•phel-lang 0.41.0 - A functional, Lisp-inspired language that compiles to PHP. Inspired by Clojure, Phel brings macros, persistent data structures, and expressive functional idioms to the PHP ecosystem.

•cryogen 0.7.9 - A simple static site generator written in Clojure

•Selmer 1.13.4 - A fast, Django inspired template system in Clojure.

•fulcro-tui 1.0.2 - A JLine-base TUI wrapper, allowing you to write TUI projects in CLJ or Babashka via Fulcro

•plotje 0.3.1 - simple and easy plotting

•squint 0.12.193 - Light-weight ClojureScript dialect

•mokujin 1.0.0.120 - 🪵 Structured logging for Clojure. Thin layer on top of clojure.tools.logging with MDC support

•edn.c 8c0869c - A fast, zero-copy EDN (Extensible Data Notation) reader written in C11 with SIMD acceleration.

•nippy 3.7.0-RC2 - Fast serialization library for Clojure

•tyrell 1.0.0-RC10 - Clojurescript WebComponents library

•lacinia 1.3.0 - GraphQL implementation in pure Clojure

•clojure-lint-action 9 - A GitHub Action that lints clojure files with clj-kondo and generates comments with reviewdog on pull requests to improve the code review experience.

•dataspex 2026.06.1 - See the shape of your data: point-and-click Clojure(Script) data browser