DuckLake 1.0 will ship with the “data inlining” feature: small updates are staged in the catalog instead of creating many small files. In today's blog post, Pedro Holanda shows how DuckLake implements inlining and shows an almost 1000× speedup on certain operations. ducklake.select/2026/04/02/d...

Here is the recording of the webinar I gave last week on GPU support in @scikit-learn.org and comparison of a scikit-learn pipeline vs the TabICLv2 foundational model on a non-linear heteroscedastic quantile regression task. app.livestorm.co/probabl/webi...

@me checks calendar...

The notebook.link team is building "serverless scientific computing" on top of the modern Conda ecosystem & the prefix.dev package server. Read the guest blog on how they shipped interactive WASM for Python, R, C++, Fortran and more: prefix.dev/blog/server...

"Building From Source Shouldn't Be This Hard" That's our motto, read our latest blogpost to understand what we're building and how Pixi already helps you with today! 🗞️ Read it here: prefix.dev/blog/buildi... #pacakgemanagement #pixi #ROS #condaforge

I put together a visual LLM Architecture Gallery that collects (~50) recent open-weight model designs in one place. Architecture diagrams, config links, tech reports, explainers... you name it! Hopefully useful as a reference & learning resource: sebastianraschka.com/llm-architec...

No more duplicate dependencies in pyproject.toml! Pixi Python packages can now set `ignore-pypi-mapping = false` to automatically convert `pyproject.toml` dependencies into conda package requirements. The goal is no configuration, this is a step in that direction!

Lettermatic ✕ GitHub Next: the inside story of Monaspace, a truly groundbreaking advancement for how we display code. We knew that Lettermatic would go deep, but we were still amazed by their level of knowledge and craft. See their case study below, and get the fonts at monaspace.githubnext.com

Do you need more control over the packages that will be installed in your Pixi workspaces? You can now define [constraints], which allow you to specify which versions are allowed when a package is installed.

✨ skrub version 0.8.0 has been released ✨ This version includes several new features, including multiple improvements to the functionality and performance of the Data Ops, along with a few bug fixes and improvements to the docs. Changelog: skrub-data.org/stable/CHANG... Highlights below ⤵️

Getting pixi-build FOMO! I'll have to start using it for my own projects.

Wow! That's nearly the worst possible scenario! 😨

Seems a super powerful capability for debugging builds!

Pixi can now natively build R packages - for your own packages or thirdparty packages from CRAN or Github. The new `pixi-build-r` build backend makes it possible. pixi-build-r will install compilers, system-level dependencies and R / r-packages from @condaforge.

Hot off the press: a new JupyterLab extension that brings advanced, interactive visualizations to your JSON, YAML, and CSV files, powered by the jsoncrack library. ➡️ Repo: github.com/jtpio/jupyte... 💡 Try it in the browser: jtpio.github.io/jupyterlab-j...

JupyterLite enables notebooks to run entirely in the browser without server infrastructure. Learn more: blog.jupyter.org/jupyterlite-... #Jupyter #JupyterLite #OpenSource #InteractiveComputing #DataScience

We're excited to announce duckdb-skills, a DuckDB plugin for Claude Code! We think the embedded nature of DuckDB makes it a perfect companion for Claude in your local workflows. Check out the repository at github.com/duckdb/duckd...

We improved our package builder Rattler-Build a lot over the past months, so we wrote a blog post about it! prefix.dev/blog/whats-...

Before pixi was around I used mamba to fully automate my IaC workflows. Pixi makes that type of end-to-end automation and reproducibility even easier! Pixi isn't well know in the infrastructure space, but it should be - Pixi is the one package manager you can use across your entire stack.

The conda steering council recently approved a set of CEPs (conda enhancement proposals) that effectively standardize the conda ecosystem. This is a big milestone worth celebrating! 🎉 Full details at conda.org/blog/2026-03...

"Cementing a machine-learning ecosystem: scikit-learn and beyond": on Friday March 20, we at @ucbids.bsky.social and the Berkeley Statistics department are delighted to host @gaelvaroquaux.bsky.social for a seminar. Join us in person or online! events.berkeley.edu/BIDS/event/3...

🎯 Tech debt can only become obvious years after the original code is written. If you don't stick around long enough to ever actually experience the problems with your own designs, you can never be held to account, but also, you'lll never learn those hard lessons yourself.

👇what he said.

A packaging ecosystem is great when it contains all the stuff you need. Here is a simple way to add binary releases made by projects on @github.com: prefix.dev/blog/octoco...

The next scikit-learn release will allow inspecting the type and values of attributes of fitted estimators in Jupyter notebooks & example code rendered as HTML in sphinx-gallery powered project websites. scikit-learn.org/dev/auto_exa...

I think the canonical argument is by Dijkstra: www.cs.utexas.edu/~EWD/transcr... In the specific context of Python there is: python-history.blogspot.com/2013/10/why-...

I have added a new tutorial on discrete diffusion models: github.com/gpeyre/ot4ml

A great overview of the evolution of #container technology via #Docker. It also provides a quick peek into the various technology bits that enable containers work. If you want to learn more about how containers work, then consider starting with wizardzines.com/zines/contai... by @b0rk.jvns.ca.

Pixi skills are kinda cool. A couple extremely useful ones already hosted on prefix – such as the `conda-forge` skill, or the `rattler-build` skill. It's useful because it contains a bunch of expert knowledge, digestible for agents.

We gave Claude a 15-page PyMC best-practices cheat sheet. Pass rates jumped from 60% → 93%. Hardest tasks saw the biggest gains: • Stochastic volatility: 0% → 67% • Runtime: 19 min → <3 min and more .. 👉Benchmark: dub.link/KZxxZfQ 👉 Get the skill: hub.decision.ai/skills/pymc-... #BayesianModeling

At @quantstack.bsky.social we designed novel bit-unpacking SIMD optimizations for @arrow.apache.org and #ApacheParquet, and implemented them entirely using C++ metaprogramming instead of Python-based code generation. We'll publish a deep dive blog post soon. github.com/apache/arrow...

Seems like it might be useful for easier code navigation in FastAPI apps. 🔖

notebook.link combines the power of @jupyter.org's JupyterLite, mambajs and jupyterlite-ai to bring to you the best of open-source data analysis and visualization tools, all within your browser: no installation required! 🤘 #DataScience #OpenSource #Jupyter #WebAssembly #AI #Python

🎯

Just published textual-editor to PyPI. It's a textual widget that is similar to a TextArea, but that actually runs a real editor and connects it to an embedded terminal emulator, so that you get all the power of neovim (or whatever your preferred editor is). github.com/davidbrochar...

When you're building recipes for conda-forge, there is an example list that you can use as inspiration for your own recipe! Hopefully we can extend this list with more community help! conda-forge.org/docs/mainta...

Stoked to share that the Steering Council has accepted PEP 814. frozendict is coming to Python 3.15! discuss.python.org/t/pep-814-ad...

ok so newsletter is out, and i've finally posted my PyCon UK keynote with additional material to my homepage. if you wanna know what took me so long: check out my latest newsletter ;) back to sauna! hynek.me/talks/python-superpo...

As a modern reimplementation of Jupyter server, I hope `jupyverse` gains traction, and I think this will really help with that! 🚀

@github.com - you need to get on top of this. It's a big problem and will only get worse if you don't give maintainers the tools to deal with it. Don't let GitHub descend into a AI/bot cesspit. Identify AI accounts and give maintainers the ability to block.

Everybody is talking about secure Python sandboxes for LLM code execution, but what about using the browser sandbox? Quick demo using JupyterLite and the Pyodide kernel 💡

When they said AI was coming for programming jobs, I didn't think they meant creating stupid, conflict-driven drama too: github.com/matplotlib/m... Seriously, launch all this AI-driven bullshit into the sun. Or give us a way to hold those behind these agents and their generated idiocy accountable.

We're continually updating our website. Here are recent highlights Sigstore attestations and provenance information are much more visible.

I just made a sidecar viewer of output you can run in jupyter console or even a regular ipython terminal to get rich interactives without a notebook. pip install runtimed import runtimed runtimed.sidecar()

The @uwssec.bsky.social team wrote up why they switched to Pixi for all their research software engineering: "Pixi has allowed us to remove the friction of package management to focus on what matters: writing better, reproducible scientific software." prefix.dev/blog/seeking...

The new engine in Python-Blosc2 4.0 delivers quite awesome performance results. Processing a 400 MB array can be up to 9.6x faster than NumPy 🤯 The best part is that it fully supports NumPy's array and ufunc interfaces. High performance with zero friction! 🏎️💨 ironarray.io/blog/miniexp... Enjoy!

We're excited to announce Pixi GUI, developed by our working student Felix Häcker! With the goal to make Pixi accessible to a wider audience while also empowering expert users. Find out more in Felix's blog post: prefix.dev/blog/introd...

🧪 Awesome announcement from the @quantstack.bsky.social team! Introducing notebook.link, share your computational notebook and have them run directly in the browser with no setup, powered by Jupyterlite and the xeus stack. #datascience #scientificcomputing

New open source: cuthbert 🐛 State space models with all the hotness: (temporally) parallelisable, JAX, Kalman, SMC

When it comes to private communications, I trust Signal over everything else.