Two of the PyConDE sprints will be dedicated to the @conda.org ecosystem! I'll lead the session on conda-smithy, one of the tools behind @conda-forge.org!

・📍 Where: Darmstadt, Germany
・📅 When: Monday, Apr 13th 2026
・🌐 More info: 2026.pycon.de/sprints/#acc...

Pytorch + Ultralytics + ROS2 Humble on a Nvidia Jetson Nano with no Docker!

Pixi, together with @condaforge and @RoboStack, makes this possible!

#ROS #nvidia #opencv

The RFC period has started on the "staging cache" CEP for the v1 recipe format. This might sound like gibberish but is a powerful feature that will allow us to convert more (complicated!) packages on @condaforge to the V1 recipe format!

How notebook.link Scales Without Backends Notebook.link combines WebAssembly and the conda ecosystem to deliver scalable, serverless computing environments that run entirely in the browser. No backend. No scaling headaches. Just instant, collaborative scientific computing for everyone.

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 Pixi-build is being designed to make package building easy, reproducible and maybe even fun!

"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

More Pixi stakeholders! Thanks Pavel and @quantco.com for being true Pixi & @conda-forge.org supporters.

Paxton holds a tool and poses against a bright yellow background, promoting Rattler-Build updates.

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-...

Standardization of the conda ecosystem | conda.org How the conda ecosystem adopted a new set of voted standards and specifications

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...

Today was a good day for the Gnome ecosystem on @conda-forge.org! Two PRs merged to get more low level libraries: libadwaita, sassc, appstream, libshumate and json-glibc by Dan Yeaw and Felix Häcker.

I was intruiged by this post and made similar (but not comparable) plots for the Python 3.14 availability on conda-forge: uwekorn.com/2025/12/01/p...

Unlocking Hidden Power of Conda with Pixi — Ruben Arts, Julian Hofer [EuroPython 2025 — Terrace 2B on 2025-07-18]🎤 *Unlocking Hidden Power of Conda with Pixi by Ruben Arts, Julian Hofer* 🔗 https://ep2025.europython.eu/sessi...

Missed us at @europython? Here is the recording:

www.youtube.com/watch?v=HOq...

2025-41: A week in conda-forge This week was the Python 3.14 release, and it will also be the final week where I log my conda-forge work. While it is interesting for me to see what I do work, it is also additional work that keeps m...

Week 41 this year was the week of the Python 3.14 release and also the last one I wrote a report on my @conda-forge.org activities: uwekorn.com/2025/10/20/w...

2025-40: A week in conda-forge This week was the week of PyData Paris and a public holiday in Germany. At the same time, my usual day-to-day work had to continue, so my conda-forge interactions were limited to simple (but many) rev...

While I was at @pydataparis.bsky.social , I did not spend much time on @conda-forge.org, but in that week, at least some important milestones happened for the Python 3.14 migration, e.g. unblocking everything that depends on pandas. More details can be found in my report: uwekorn.com/2025/10/16/w...

Python 3.14 has been released two days ago. At the same time, we also uploaded a build of it to @conda-forge.org and about 40% of Python version dependent (mostly those with compiled code) were immediately available. See conda-forge.org/blog/2025/10...

2025-39: A week in conda-forge In the third week of reporting on my conda-forge work, you will see how the large number of contributions happens quickly. As we’re getting closer to the Python 3.14 release, I spent some time bringin...

Another week of reporting on my @conda-forge.org work: uwekorn.com/2025/10/14/w... This time, I started a mini-sprint on the Python 3.14 migration.

Cross compiling in the Conda ecosystem Cross compiling is a fundamental capability in modern software development, allowing developers to build packages for different architectures without needing access to the target hardware.

In our little deep dive series we're now exploring how cross-compilation in the Conda ecosystem works: prefix.dev/blog/cross-c.... Back in the days, @conda-forge.org rolled this out widely to support osx-arm64 early on, and now for linux-aarch64/ppc64le.

Pixi Global is known as a tool to manage CLI applications, but did you know that you can also install shell completions and even graphical user interfaces with it? Learn more by reading Lucas' and Julian's blog post: prefix.dev/blog/using-...

2025-37: A week in conda-forge While I spent the majority of my time on QuantCo-internal (often strategic, non-code) work, my GitHub profile still hovers around 8,000 yearly contributions. Part of this is through my internal work, ...

Ever wondered where all my GitHub contributions come from? I have document a week's worth of @conda-forge.org contributions: uwekorn.com/2025/09/18/w...

I plan to do this for 2-3 more weeks to get an overview where I spent my time. I hope there is also content in there that helps others.

Our server has recently delivered more than 1.000.000 packages for the first time. We've hit that mark a few more times since. Seeing this constant growth is fascinating and we are confident that our infrastructure will scale well beyond this number!

Mutex packages in the Conda world Mutex packages are a useful mechanism to guide the solver towards certain dependencies, mutually excluding other dependency trees.

We're continuing our little deep dive series into Conda packaging. Mutex packages are useful to guide the SAT solver into specific parts of the dependency tree, and globally select either a GPU or CPU variant or similar features for an environment. prefix.dev/blog/what-a...

Today we're unveiling new Software Supply Chain features for the Conda ecosystem: the integration of Sigstore is in public beta on prefix! You can now create Sigstore attestations on Github Actions and cryptographically secure your supply chain with trusted publishing.

We “conda” believe it! In collaboration with 7ASecurity and @sovereign.tech, we carried out an audit of conda-forge. Read the details at our blog: ostif.org/conda-forge-...

@conda-forge.org and @conda.org are essential components of our stack. Thus, it is natural for us to work with the community there to make it ready for upcoming cyber(security) regulations. Read about our efforts at tech.quantco.com/blog/conda-r...

Reach out, if you would like to collaborate!

The documentation of @conda-forge.org is improving with example recipes for Go and Rust packages – providing useful starting points to get MORE packages into our ecosystem!

“Raise your hand if you were able to install everything with pixi and run the simulation-based inference tutorial notebook.”
github.com/cranmer/sbi-...

I'm really looking forward to getting to teach this tutorial with @ruben-arts.bsky.social and John next week at #SciPy2025! This has been fun to collaborate with them on to create. I hope tutorial participants enjoy it and come away feeling they have a whole new toolkit to empower themselves with!

Virtual Packages in the Conda ecosystem Virtual packages are a neat trick to inject system requirements into the SAT solver and resolve for compatible packages automatically. In this blog post we talk about how they are used in the Conda ecosystem to support complex cross-platform package distributions.

Ever wondered how Conda and Pixi "know" to install CUDA packages only on GPU machines? 🤔

Meet virtual packages - a clever solution to inject system compatibility information to the SAT solver to ensure compatibility.

prefix.dev/blog/virtua...

Demystifying conda packages!

Celebrating 4 incredible years with ‪@rjai.me‬! 🌟 As a conda steering committee member and conda-forge core team member, Jaime helps coordinate efforts that enable scientific breakthroughs. Here's to more years of community-driven innovation! 🙌 #CommunityImpact #OpenSource

S3 support in Pixi and rattler-build We're excited to announce S3 support across our entire toolchain – rattler, pixi, and rattler-build now support the most common cloud storage standard, thanks to contributions from our friends at QuantCo. This vendor-agnostic approach to distributing Conda packages represents a major step forward for the ecosystem, offering teams the flexibility to host packages on any S3-compatible provider (AWS, Cloudflare R2, Backblaze B2, Hetzner, and more) with built-in authentication and minimal vendor lock-in.

These days you can easily use S3 buckets to host your Conda packages. @quantcotech folks have implemented support across pixi, rattler and rattler-build.

We're excited because we want Conda packages to be used everywhere without vendor lock-in!

prefix.dev/blog/s3-sup...