Clojurians Log v2
announcements 2026-11-09
I got https://jolt-lang.net/ integrated in https://upbge.org which is a fork of the Blender game engine https://github.com/jlt-commons/upbge-jolt so now it can be driven entirely via nREPL, and all the game logic lives in Clojure. Best part is that UPBGE can build a standalone app as a release. The example in the project includes an interactive demo.
https://github.com/babashka/ffi: call C libraries from Clojure, babashka and Node.js.
0.1.3 (2026-11-09)
ā¢ https://github.com/babashka/ffi/issues/65: write-string writes a NUL-terminated string into existing memory
ā¢ https://github.com/babashka/ffi/issues/64: cfn accepts structs in a variadic signature, as return type and as argument
ā¢ https://github.com/babashka/ffi/issues/63: callback accepts struct layouts as argument and return types
ā¢ In a native image with libffi, callback accepts shapes outside the registered upcall set, such as more than 6 arguments or :float
ā¢ In a native image with libffi, a callback costs about 30 ns instead of 2 us
ā¢ The clj-kondo hook checks the arity of a defcfn with types after :&
ā¢ read-array, write-array and copy accept a zero-size pointer for 0 elements
ā¢ On the JVM, a callback receives a :uint, :uint32, :uint16 or :uint8 argument without sign extension
https://github.com/clj-commons/hickory: parse HTML into Clojure data structures.
0.7.8 (2026-11-09)
ā¢ https://github.com/clj-commons/hickory/issues/98: as-hiccup converts the element after an empty script or style element (https://github.com/jacobemcken)
ā¢ https://github.com/clj-commons/hickory/pull/94: parse accepts a String, File or Path without reflection and throws on other input (https://github.com/erdos)
ā¢ Bump jsoup to 1.22.2
cc @jacob429
https://github.com/jacobemcken/html-to-md: Initial release 0.8.1
Converts HTML (via Hickory) to markdown. Handles nesting well (e.g. lists inside blockqoutes inside lists).
Can be used from both Clojure and Babashka.
Also, installable as a CLI tool:
bbin install
To see it in action:
html-to-md
html-to-md
html-to-md
html-to-md
Cool! This reminds me of https://github.com/dazld/r11y/. Iām not sure if youāve seen it.
Nice, and no - I wasnāt aware of its existence. It didnāt show up in my search results for āclojure html to markdownā š But it looks cool, especially because it works with Babashka - which is very important to me. I will deffo take a closer look. Thanks.
Happy to share. Iāve had a hard time finding Clojure projects myself unless they've been around for a long time.
I really like that r11y can include metadata as frontmatter (I was thinking of doing that myself), and also that it filters out content likely not relevant to the main content (inspired by Mozillaās Readability and trafilatura) and a couple of other small niffy things š
It does not handle nested content well though:
- Apple
- Banana
- The
yellow one.
A sunflower would
be jealous.
Even
the sun.
- Kiwi
r11y:
- Apple
- Banana - The `yellow` one.
- > A *sunflower* would be jealous.
>
> **Even**
> the sun.
>
>
- Kiwihtml-to-md :
- Apple
- Banana
1. The `yellow` one.
2. > A _sunflower_ would be jealous.
>
> **Even**
> the sun.
- Kiwi
Thanks for the ping, Christoph! It is difficult to determine what is layout and whatās content sometimes, but Jacobās nested list case is a no brainer. Thanks for the report, Iāll fix that up. If youāre interestedā¦ r11y started off using the classic arc90 readability algorithm, but it ended up working better (imo) the other way around. Arc90 goes bottom up with statistical scoring, and r11y goes top down with declarative reductions and text heuristics (tag names/roles, link density, text length..).. stuff like this. Both have tradeoffs.. arc90 was much of its time, html these days tends to carry much more semantic meaning than in 2009, aria roles etc. We use r11y at work where it generally produces cleaner signals than cloudflareās markdown converter on the corpus I tried it on, so thereās that.. pairing it with cloudflareās browser render to grab settled and js rendered html, which then gets passed to r11y server side works really well, if you want a recipe. The frontmatter is mostly from json-ld parsing, if youāre still reading š
Hehe, nice
Hey everyone, today we are opening the http://surveymonkey.com/r/clojure2026! If you use any Clojure dialect, we would love to learn about how you use Clojure and your tools. This survey has been running since 2010 and while it just takes a few minutes, it really is an important contribution in taking the pulse of the community. Thanks for participating.
Was one of 35 or 36 meant to ask about mobile? They seem to ask the same Q, and I did not spot a mobile Q. I use Flutter via #C03A6GE8D32 for iOS.
donāt really have anything related to mobile, but thatās maybe something interesting to add
And thereās a mobile stack for React, IIRC. Mobile seems like a good outlet for Clojure. And the ClojureDart build tools make that approach painless. Pretty sure the ReactJS path is well-tooled, too.
kmet is a terminal coding agent written in Clojure, running on Babashka, Jolt and the JVM.
0.3.0 adds a persistent eval tool: one SCI environment per session, where a top-level definition with a docstring becomes a saved, reusable verb, while an undocumented definition stays session-only. Definitions are scoped to the session cwd or global, load in later sessions, and are managed with the /eval command. Enable it through /tools or the resource selection settings.
Also in this release: run_code is now codemode, server mode over the RPC protocol, tool_search for deferred tools, rovider prompt caching improvements, deterministic VCC compaction (experimental), and per-agent permissions.
Breaking changes: codemode and eval are opt-in, --app is gone, and extensions are plugin-only.
https://github.com/kmetia/kmet-agent/releases/tag/v0.3.0
Come join us in #C0C33LDGNP2