In this post I'll give updates about open source I worked on during May and June 2025.

To see previous OSS updates, go here.

Sponsors

I'd like to thank all the sponsors and contributors that make this work possible. Without you the below projects would not be as mature or wouldn't exist or be maintained at all! So a sincere thank you to everyone who contributes to the sustainability of these projects.

Current top tier sponsors:

• Clojurists Together
• Roam Research
• Nextjournal
• Nubank

Open the details section for more info about sponsoring.

Updates

Here are updates about the projects/libraries I've worked on in the last two months, 19 in total!

• babashka: native, fast starting Clojure interpreter for scripting.

  • Bump edamame (support old-style #^ metadata)
  • Bump SCI: fix satisfies? for protocol extended to nil
  • Bump rewrite-clj to 1.2.50
  • 1.12.204 (2025-06-24)
  • Compatibility with clerk's main branch
  • #1834: make taoensso/trove work in bb by exposing another timbre var
  • Bump timbre to 6.7.1
  • Protocol method should have :protocol meta
  • Add print-simple
  • Make bash install script work on Windows for GHA
  • Upgrade Jsoup to 1.21.1
  • 1.12.203 (2025-06-18)
  • Support with-redefs + intern (see SCI issue #973
  • #1832: support clojure.lang.Var/intern
  • Re-allow init as task name
  • 1.12.202 (2025-06-15)
  • Support clojure.lang.Var/{get,clone,reset}ThreadBindingFrame for JVM Clojure compatibility
  • #1741: fix taoensso.timbre/spy and include test
  • Add taoensso.timbre/set-ns-min-level! and taoensso.timbre/set-ns-min-level
  • 1.12.201 (2025-06-12)
  • #1825: Add Nextjournal Markdown as built-in Markdown library
  • Promesa compatibility (pending PR here)
  • Upgrade clojure to 1.12.1
  • #1818: wrong argument order in clojure.java.io/resource implementation
  • Add java.text.BreakIterator
  • Add classes for compatibility with promesa:
    • java.lang.Thread$Builder$OfPlatform
    • java.util.concurrent.ForkJoinPool
    • java.util.concurrent.ForkJoinPool$ForkJoinWorkerThreadFactory
    • java.util.concurrent.ForkJoinWorkerThread
    • java.util.concurrent.SynchronousQueue
  • Add taoensso.timbre/set-min-level!
  • Add taoensso.timbre/set-config!
  • Bump fs to 0.5.26
  • Bump jsoup to 1.20.1
  • Bump edamame to 1.4.30
  • Bump taoensso.timbre to 6.7.0
  • Bump pods: more graceful error handling when pod quits unexpectedly
  • #1815: Make install-script wget-compatible (@eval)
  • #1822: type should prioritize :type metadata
  • ns-name should work on symbols
  • :clojure.core/eval-file should affect *file* during eval
  • #1179: run :init in tasks only once
  • #1823: run :init in tasks before task specific requires
  • Fix resolve when *ns* is bound to symbol
  • Bump deps.clj to 1.12.1.1550
  • Bump http-client to 0.4.23

• SCI: Configurable Clojure/Script interpreter suitable for scripting

  • 0.10.47 (2025-06-27)
  • Security issue: function recursion can be forced by returning internal keyword as return value
  • Fix #975: Protocol method should have :protocol var on metadata
  • Fix #971: fix satisfies? for protocol that is extended to nil
  • Fix #977: Can't analyze sci.impl.analyzer with splint
  • 0.10.46 (2025-06-18)
  • Fix #957: sci.async/eval-string+ should return promise with :val nil for ns form rather than :val <Promise>
  • Fix #959: Java interop improvement: instance method invocation now leverages type hints
  • Bump edamame to 1.4.30
  • Give metadata :type key priority in type implementation
  • Fix #967: ns-name should work on symbols
  • Fix #969: ^:clojure.core/eval-file metadata should affect binding of *file* during evaluation
  • Sync sci.impl.Reflector with changes in clojure.lang.Reflector in clojure 1.12.1
  • Fix :static-methods option for class with different name in host
  • Fix #973: support with-redefs on core vars, e.g. intern. The fix for this issue entailed quite a big refactor of internals which removes "magic" injection of ctx in core vars that need it.
  • Add unchecked-set and unchecked-get for CLJS compatibility

• clerk: Moldable Live Programming for Clojure

  • Make clerk compatible with babashka

• quickblog: light-weight static blog engine for Clojure and babashka

  • 0.4.7 (2025-06-12)
  • Switch to Nextjournal Markdown for markdown rendering The minimum babashka version to be used with quickblog is now v1.12.201 since it comes with Nextjournal Markdown built-in.
  • Link to previous and next posts; see "Linking to previous and next posts" in the README (@jmglov)
  • Fix flaky caching tests (@jmglov)
  • Fix argument passing in test runner (@jmglov)
  • Add --date to api/new. (@jmglov)
  • Support Selmer template for new posts in api/new; see Templates > New posts in README. (@jmglov)
  • Add 'language-xxx' to pre/code blocks
  • Fix README.md with working version in quickstart example
  • Fix #104: fix caching with respect to previews
  • Fix #104: document :preview option

• edamame: configurable EDN and Clojure parser with location metadata and more

  • 1.4.31 (2025-06-25)
  • Fix #124: add :imports to parse-ns-form
  • Fix #125: Support #^:foo deprecated metadata reader macro (@NoahTheDuke)
  • Fix #127: expose continue value that indicates continue-ing parsing (@NoahTheDuke)
  • Fix #122: let :auto-resolve-ns affect syntax-quote
  • 1.4.30
  • #120: fix :auto-resolve-ns failing case

• squint: CLJS syntax to JS compiler

  • #678: Implement random-uuid (@rafaeldelboni)
  • v0.8.149 (2025-06-19)
  • #671: Implement trampoline (@rafaeldelboni)
  • Fix #673: remove experimental atom as promise option since it causes unexpected behavior
  • Fix #672: alias may contain dots
  • v0.8.148 (2025-05-25)
  • Fix #669: munge refer-ed + renamed var
  • v0.8.147 (2025-05-09)
  • Fix #661: support throw in expression position
  • Fix #662: Fix extending protocol from other namespace to nil
  • Better solution for multiple expressions in return context in combination with pragmas
  • Add an ajv example

• clj-kondo: static analyzer and linter for Clojure code that sparks joy.
  

  • #2560: NEW linter: :locking-suspicious-lock: report when locking is used on a single arg, interned value or local object
  • #2555: false positive with clojure.string/replace and partial as replacement fn
  • 2025.06.05
  • #2541: NEW linter: :discouraged-java-method. See docs
  • #2522: support :config-in-ns on :missing-protocol-method
  • #2524: support :redundant-ignore on :missing-protocol-method
  • #2536: false positive with format and whitespace flag after percent
  • #2535: false positive :missing-protocol-method when using alias in method
  • #2534: make :redundant-ignore aware of .cljc
  • #2527: add test for using ns-group + config-in-ns for :missing-protocol-method linter
  • #2218: use ReentrantLock to coordinate writes to cache directory within same process
  • #2533: report inline def under fn and defmethod
  • #2521: support :langs option in :discouraged-var to narrow to specific language
  • #2529: add :ns to &env in :macroexpand-hook macros when executing in CLJS
  • #2547: make redundant-fn-wrapper report only for all cljc branches
  • #2531: add :name data to :unresolved-namespace finding for clojure-lsp

• sci.configs: A collection of ready to be used SCI configs.

  • A configuration for replicant was added

• scittle: Execute Clojure(Script) directly from browser script tags via SCI

  • v0.7.23 (2025-06-18)
  • #107: add replicant plugin (@jeroenvandijk)
  • #102: add applied-science/js-interop plugin (@chr15m)
  • #105: add goog.string/htmlEscape (@ikappaki )
  • #113: add unchecked-set and unchecked-get

• nbb: Scripting in Clojure on Node.js using SCI

  • 1.3.204 (2025-05-15)
  • #389: fix regression caused by #387
  • 1.3.203 (2025-05-13)
  • #387: bump import-meta-resolve to fix deprecation warnings on Node 22+
  • 1.3.202 (2025-05-12)
  • Fix nbb nrepl server for Deno
  • 1.3.201 (2025-05-08)
  • Deno improvements for loading jsr: and npm: deps, including react in combination with reagent
  • #382: prefix all node imports with node:

• quickdoc: Quick and minimal API doc generation for Clojure

  • v0.2.5 (2025-05-01)
  • Fix #32: fix anchor links to take into account var names that differ only by case
  • v0.2.4 (2025-05-01)
  • Revert source link in var title and move back to <sub>
  • Specify clojure 1.11 as the minimal Clojure version in deps.edn
  • Fix macro information
  • Fix #39: fix link when var is named multiple times in docstring
  • Upgrade clj-kondo to 2025.04.07
  • Add explicit org.babashka/cli dependency

• Nextjournal Markdown

  • 0.7.186
  • Make library more GraalVM native-image friendly
  • 0.7.184
  • Consolidate utils in nextjournal.markdown.utils
  • 0.7.181
  • Hiccup JVM compatibility for fragments (see #34)
  • Support HTML blocks (:html-block) and inline HTML (:html-inline) (see #7)
  • Bump commonmark to 0.24.0
  • Bump markdown-it to 14.1.0
  • Render :code according to spec into <pre> and <code> block with language class (see #39)
  • No longer depend on applied-science/js-interop
  • Accept parsed result in ->hiccup function
  • Expose nextjournal.markdown.transform through main nextjournal.markdown namespace
  • Stabilize API and no longer mark library alpha

• babashka.nrepl-client

  • Add :responses key with raw responses

• speculative

  • Add spec for even?

• http-client: babashka's http-client

  • 0.4.23 (2025-06-06)
  • #75: override existing content type header in multipart request
  • Accept :request-method in addition to :request to align more with other clients
  • Accept :url in addition to :uri to align more with other clients

• unused-deps: Find unused deps in a clojure project

  • This is a brand new project!

• fs - File system utility library for Clojure

  • #147: fs/unzip should allow selective extraction of files (@sogaiu)
  • #145: fs/modified-since works only with ms precision but should support the precision of the filesystem

• cherry: Experimental ClojureScript to ES6 module compiler

  • Fix cherry.embed which is used by malli

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

  • Released several versions catching up with the clojure CLI

Other projects

These are (some of the) other projects I'm involved with but little to no activity happened in the past month.