Clojure
Clojure Deref (July 14, 2025)

Clojure Deref (July 14, 2025)

14 July 2025
Christoph Neumann

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

The Clojure/conj 2025 Call for Presentations is open now until July 27! We are seeking proposals for both 30 minute sessions and 10 minute lightning talks.

Libraries and Tools

New releases and tools this week:

  • legba - Clojure library for building OpenAPI services

  • babashka 1.12.205 - Native, fast starting Clojure interpreter for scripting

  • cider 1.19.0 - The Clojure Interactive Development Environment that Rocks for Emacs

  • datomic-browser - web-based support/diagnostics UI for any production Datomic service

  • repl-mcp - Model Context Protocol Clojure support including REPL integration with development tools.

  • teensyp - GitHub - weavejester/teensyp

  • huff 0.2.21 - Juicy hiccup in pure Clojure

  • mcp-server - MCP Server library

  • ring-nexus-middleware - Ring FCIS (Functional Core Imperative Shell) support through nexus

  • clay 2-beta48 - A REPL-friendly Clojure tool for notebooks and datavis

  • qclojure 0.8.0 - A functional quantum computer programming library for Clojure with backend protocols, simulation backends and visualizations.

  • lazytest 1.8.0 - A standalone BDD test framework for Clojure

  • calva 2.0.521 - Clojure & ClojureScript Interactive Programming for VS Code

  • pretty 2.3.0 - Library for helping print things prettily, in Clojure - ANSI fonts, formatted exceptions

  • squint 0.8.150 - Light-weight ClojureScript dialect

  • cherry 0.4.29 - Experimental ClojureScript to ES6 module compiler

  • cli 0.8.66 - Turn Clojure functions into CLIs!