I'm happy to announce Badness: a formatter, linter, and language server for LaTeX! It is meant to be a all-in-one replacement for whatever texlab + latexindent/tex-fmt + chkex + bibtex-tidy setup you have going. The goal is to be a Ruff for LaTeX. github.com/jolars/badness #texlatex #latex

GitHub - jolars/badness: LaTeX language server, formatter, and linter

LaTeX language server, formatter, and linter. Contribute to jolars/badness development by creating an account on GitHub.

github.com

If you happen to be at #ICML this year, I'm presenting me and Jonas Wallin's poster "The Choice of Normalization Influences Shrinkage in Regularized Regression" today in the late afternoon session (17:00-18:45), number 3901! More and links to the paper and code at icml.cc/virtual/2026... #ICML2026

Slides for our ICML tutorial on Memorization and Generalization of Diffusion and Flow Matching Models are now available ! 🌀 memorization-generalization.github.io @quentinbertrand.bsky.social

It's been ten years(!) since I wrote the R package eulerr, which generates area-proportional Venn and Euler diagrams. The last few months I've expanded eulerr into #Python, #Julia, #JavaScript, and #Rust and just published a blog post about this and improvements it brings. jolars.co/blog/2026-07...

Eunoia: Euler and Venn Diagrams in Five Languages

Eunoia is a Rust engine for area-proportional Euler and Venn diagrams, now with bindings for R, Python, Julia, and JavaScript.

jolars.co

Apparently I really like language servers, so I've made one for R! Arity is an all-in-one language server, formatter, and linter. It uses the same architecture as rust-analyzer. It has a fast formatter and linter (on par with air and jarl). It even formats roxygen2 blocks! github.com/jolars/arity

GitHub - jolars/arity: Language server, formatter, and linter for R

Language server, formatter, and linter for R. Contribute to jolars/arity development by creating an account on GitHub.

github.com

Panache v2.60 is out! Panache is a language server, formatter, and linter for #Markdown (including #Pandoc, #Quarto, and much more.) New in this version is experimental support for MyST (mystmd.org) and mdsvex (mdsvex.pngwn.io) flavored Markdown. github.com/jolars/panache

GitHub - jolars/panache: Language server, formatter, and linter for Markdown, Quarto, and R Markdown

Language server, formatter, and linter for Markdown, Quarto, and R Markdown - jolars/panache

github.com

The #rstat brulee package added several tabular deep learning models (using R's torch package). More details and next steps are in the blog post. opensource.posit.co/blog/2026-06...

brulee 1.0.0

The first major version of brulee significantly expands tools for tabular deep learning models. We highlight five new model types, a `summary()` method, numerical precision changes, and GPU support

opensource.posit.co

I've created a Julia package for my Eunoia project (area-proportional venn and Euler diagrams)! It is built around my Rust library eunoia and uses Makie for plotting. Give it a try and tell me what you think! github.com/jolars/Eunoi... #julia #venn-diagrams #euler-diagrams #dataviz

GitHub - jolars/Eunoia.jl: Euler and Venn Diagrams in Julia

Euler and Venn Diagrams in Julia. Contribute to jolars/Eunoia.jl development by creating an account on GitHub.

github.com

A massive congrats to R Core for this great honour. R has been the foundation of my career and it wouldn’t have been possible without years of work from them.

The R Foundation@r-foundation.bsky.social · 2mo ago

The 2026 Rousseeuw Prize for Statistics has been awarded to the R Project. #RStats www.rousseeuwprize.org/2026

I've written a blog post about my new project, Basin: A optimization library for #Rust! It's heavily inspired by the excellent argmin library, but with a few new features and deliberate differences that I explain in the blog post. jolars.co/blog/2026-06... #optimization

Basin: Numerical Optimization in Rust

Basin is a Rust library for numerical optimization, with pluggable linear-algebra backends, first-class constraints, and WebAssembly support.

jolars.co

Panache v2.52.0 is out! 🚀 A formatter, linter & language server for Quarto, Pandoc & Markdown. New: experimental math formatter (align + whitespace normalization) and hand-written YAML parser & formatter, fully lossless, even hashpipe YAML (Quaro chunk options) https://panache.bz

Panache: Language Server, Formatter, and Linter for Markdown, Quarto, and R Markdown

Panache provides authoring tools for Markdown, Quarto, and R Markdown: a language server, formatter, and linter to help you write better documents, more efficiently.

panache.bz

Version 8.0.0 of my R package eulerr is out and on CRAN! 🚀 Its backend has been completely rewritten in Rust (via the eunoia crate), and brings square and rectangle shapes, faster fitting, efficient handling of large combinations, fewer dependencies, label placement algorithms to avoid overlaps, pl

I've made something! A numerical optimization library for Rust! 👀 https://basin.bz/ #optimization #rustlang #wasm

Basin — Numerical Optimization for Rust

Basin is a numerical optimization library for Rust: pluggable solvers, multiple linear-algebra backends, first-class constraints, and a wasm-first design.

basin.bz

The new app makes use of the new, exciting features of Eunoia, like supporting a complement (universe), as well as squares and rectangles in addition to circles and ellipses. Please check it out! https://eunoia.bz #eulerdiagram #venndiagram

Eunoia

Eunoia is an open-source library for generating area-proportional Euler and Venn diagrams, with bindings for R and TypeScript and a full-featured web app.

eunoia.bz

RE: https://mastodon.social/@jolars/116532674284691320 Thanks everyone! 🙏 That did it!

Panache (formatter/linter/language server for #Markdown , #Quarto , and R Markdown) is currently sitting at 99 GitHub stars ⭐. One more gets it over the threshold for inclusion in #Neovim ’s lspconfig and mason plugins! Does anyone feels like being star # 100? 😅 https://github.com/jolars/panache

GitHub - jolars/panache: Language server, formatter, and linter for Markdown, Quarto, and R Markdown

Language server, formatter, and linter for Markdown, Quarto, and R Markdown - jolars/panache

github.com

🥳

Journal of Open Source Software@joss-openjournals.bsky.social · 3mo ago

🎉 JOSS turns 10 today! Ten years, 3,500+ papers, 11,000+ authors, 4000+ reviewers, and a community that built something remarkable together. Thank you to everyone who's reviewed, edited, authored, or cheered us on along the way 💚 joss.theoj.org #openscience #opensource

🔥 Announcing the last tutorial on Stancon 2026 🔥 discourse.mc-stan.org/t/announcing...

Announcing the last tutorial of StanCon 2026

We are happy to announce the last workshop at StanCon 2026 in August! Contributing to Stan: A Developer’s Guide to the Core, Interfaces, and First Contributions Would you like to contribute a new fe...

discourse.mc-stan.org

I managed to install panache (panache.bz) and for now I only got it to do one thing, but it is one thing that is really nice to do with a one liner: put every sentence in a quarto document on a newline. So the economy of a paragraph is visible at a glance. #writing #quarto

Panache: Language Server, Formatter, and Linter for Pandoc, Quarto, and R Markdown

Panache provides authoring tools for Pandoc, Quarto, and R Markdown: a language server, formatter, and linter to help you write better documents, more efficiently.

panache.bz

Panache, a sweet new formatter and linter for #quarto and #RStats markdown by @jolars.co will format automatically on save in Positron/VSCode

The panache #quartopub formatter and linter by @jolars.co is excellent! Very configurable and uses external tools (e.g., air or ruff) to format code blocks. panache.bz

Panache: Language Server, Formatter, and Linter for Pandoc, Quarto, and R Markdown

Panache provides authoring tools for Pandoc, Quarto, and R Markdown: a language server, formatter, and linter to help you write better documents, more efficiently.

panache.bz

Just released Panache 2.29 a couple of days ago: a formatter, linter, and language server for #Quarto, #Pandoc, and #R #Markdown! 🚀 New features include file renaming updating links, Yaml entries, etc throughout your files and Quarto projects. Full notes at github.com/jolars/panac... panache.bz

Panache: Language Server, Formatter, and Linter for Pandoc, Quarto, and R Markdown

Panache provides authoring tools for Pandoc, Quarto, and R Markdown: a language server, formatter, and linter to help you write better documents, more efficiently.

panache.bz

Panache, a language server, formatter, and linter for #Pandoc , #Quarto and #R #Markdown files is now also available for #VScode and related editors like #positron See https://marketplace.visualstudio.com/items?itemName=jolars.panache or https://open-vsx.org/extension/jolars/panache .

Panache - Visual Studio Marketplace

Extension for Visual Studio Code - Language server for Pandoc, Quarto, and R Markdown documents

marketplace.visualstudio.com

I've made an autoformatter, linter, and LSP for Quarto, Pandoc, and RMarkdown documents! It's still very much a work-in-progress; only the formatter is reaching something resembling a mature state. Check it out at https://github.com/jolars/panache #pandoc #markdown #quarto #rmarkdown

GitHub - jolars/panache: A formatter for Pandoc, Quarto, and RMarkdown

A formatter for Pandoc, Quarto, and RMarkdown. Contribute to jolars/panache development by creating an account on GitHub.

github.com

Just released the the SLOPE (the R package) version 2.0.0 🚀 Changes include modified behavior of `coef()`, new `refit()` method of cross-validation results, and a `summary()` method for SLOPE objects. https://github.com/jolars/SLOPE/releases/tag/v2.0.0

Release SLOPE 2.0.0 · jolars/SLOPE

Breaking Changes coef.SLOPE() with simplify = FALSE and intercept = TRUE now includes the intercepts as part of the returned list of coefficient matrices. New Features The plot.SLOPE() method no...

github.com

I’ve decided that the world needs yet another Pomodoro timer. yapm was unfortunately already taken, so I named it after the Swedish 🇸🇪 tomato 🍅: Tomat. Tomat is designed specifically for status bars like waybar and polybar and only for linux. https://jolars.co/blog/2026-01-12-tomat

Introducing Tomat: A Pomodoro Timer for Status Bars

I’ve decided that the world needs yet another pomodoro timer. yapm was unfortunately already taken, so I named it after the Swedish tomato.

jolars.co

I just released moloch 2.1.0, with support for configuring the style of the title page! At the moment, I've added two styles beyond the default: one mimicking the standard beamer style and one that uses a split style (see below).

If you're working with causal graphs in R, then take a look at caugi, which is an R package by Frederik Fabricius Bjerre that I supervised the making of. It's blazing fast (built in Rust) and intuitive to work with. https://caugi.org/ #causality #r #graphs

Causal Graph Interface

Create, query, and modify causal graphs. 'caugi' (Causal Graph Interface) is a causality-first, high performance graph package that provides a simple interface to build, structure, and examine causal relationships.

caugi.org

I have just released a major update of my Latex Beamer theme Moloch, featuring a revamped color system along with various other changes. I describe them in this blog post: https://jolars.co/blog/2025-12-05-moloch-v2/ #texlatex #beamer #presentations

What’s New in Moloch 2.0.0

I’m happy to announce the release of Moloch 2.0.0, with a redesigned color system, new themes, improved documentation, redesigned itemize lists, and various other refinements.

jolars.co

I've spent a bit of time updating the documentation for my LaTeX Beamer theme Moloch. In particular, it now contains documentation in the browser at https://moloch.ink ! Hopefully this makes it easier to discover and understand the available options for configuring the theme! #texlatex #beamer

Moloch - A Minimalist, Feature-Rich Beamer Theme

Moloch is a minimalist, feature-rich Beamer theme for LaTeX presentations with a clean design and extensive customization options.

moloch.ink