05 May 2026
Christoph Neumann
Welcome to the Clojure Deref! This is a weekly link/news roundup for the Clojure ecosystem (feed: RSS).
After a ten-year hiatus, EuroClojure is coming to Prague!
May 19-21, 2027
2027.euroclojure.org
The theme will be the design, long-term development, and operation of reliable systems. Enjoy three days of workshops, talks, and conversation relevant for industry veterans, ranging from senior developers, tech leads, VPs of Engineering to CTOs.
The conference will showcase engineering approaches within the Clojure ecosystem, but with a strong emphasis on broader applicability. It will explore the real-world portability of these concepts to other tech stacks, mutual inspiration across different communities, and adapting to AI-assisted development.
Join the mailing list for early bird tickets and announcements. Share your ideas and content suggestions when you sign up.
We’re looking for 40-minute talks that go beyond the basics: hard-won lessons, production stories, trade-offs, deep dives into language features, libraries, or tools, and ideas that change how people build things. Tracks include: Language, Experience Report, Library, Tools, AI, Ideas, and Fun.
Join us for the largest gathering of Clojure developers in the world! Meet new people and reconnect with old friends. Enjoy two full days of talks, a day of workshops, social events, and more.
September 30 – October 2, 2026
Charlotte Convention Center, Charlotte, NC
Early bird and group tickets are on sale now.
In case you missed it, the Clojure Documentary is live!
Follow it up with the Clojure Documentary Q&A.
Don’t miss the Documentary show notes.
Babashka Conf: May 8. Amsterdam, NL. See the schedule.
Dutch Clojure Days 2026: May 9. Amsterdam, NL. See the schedule.
Spring Lisp Game Jam 2026: May 14-24. Online.
Programming as and for Inference (by Christian Weilbach): May 29
Pastedown: Paste rich text as markdown in VS Code with a Joyride Script - CalvaTV
Learn Ring - 11. hiccup & hiccup 2 - Clojure Diary
Learn Ring - 12. Navbar - Clojure Diary
Swish: Using Claude Code to Create a Lisp in Swift - ns & loading - Rod Schmidt
Clojurists Together Q2 2026 Funding Announcement - Kathy Davis
Clojure is the future of AI coding, but you won’t use it - Timur Latypoff
Hello, Jank – Clojure Civitas - Daniel Slutsky
Hello, Babashka – Clojure Civitas - Daniel Slutsky
Datavis in Babashka: analysing our calendar feed – Clojure Civitas - Daniel Slutsky
A game loop in a core.async goroutine - Eric Shull
Conference Tooling for Heart of Clojure 2024 - Arne Brasseur
OSS updates March and April 2026 - Michiel Borkent
Gloat Funded for Q2 2026! - GloatHub - Ingy dot Net
Uniting C and Clojure in Bbssh - Crispin Wellington
Debut release
janqua - Jank notebooks using Quarto
babqua - Babashka notebooks using Quarto
plotje - simple and easy plotting
go-joker - A personal twist on the original Clojure interpreter and linter, slightly mad, Go-ing places
re-frame-pair - A Skill for pair-programing with Claude Code on a re-frame app.
re-frame-pair-improver - A skill which analyses the use of another skill (re-frame-pair sessions) and proposes improvements
alike - A simple matching library
Updates
xtdb 2.2.0-beta1 - An immutable SQL database for application development, time-travel reporting and data compliance. Developed by @juxt
re-frame 1.4.7 - A ClojureScript framework for building user interfaces, leveraging React
calva-backseat-driver 0.0.31 - VS Code AI Agent Interactive Programming. Tools for CoPIlot and other assistants. Can also be used as an MCP server.
lexical-chocolate 0.0.4 - Provides utilities for building lexical contours.
clojure-cli-config 2026-05-01 - User aliases and Clojure CLI configuration for deps.edn based projects
joyride 0.0.74 - Making VS Code Hackable like Emacs since 2022
baredom 2.7.0 - BareDOM: Lightweight CLJS UI components built on web standards (Custom Elements, Shadow DOM, ES modules). No framework, just the DOM
phel-lang 0.35.0 - 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.
metamorph.ml 1.5.1 - Machine learning functions based on metamorph and machine learning pipelines
epupp 0.0.19 - A web browser extension that lets you tamper with web pages, live and/or with userscripts.
kairos 0.2.62 - Crontab parser for Clojure with human-readable cron explanations
clojure-lsp 2026.05.05-12.58.26 - Clojure & ClojureScript Language Server (LSP) implementation
re-frame-query 0.10.0 - Declarative data fetching and caching for re-frame inspired by tanstack query and redux toolkit query
calva 2.0.583 - Clojure & ClojureScript Interactive Programming for VS Code
