Prefix.dev - the Pixi company

We’ll be at NVIDIA GTC Berlin next week! We’ll be joining the Edge Round Table on Tuesday morning and the Startup Stack-a-thon on Wednesday. www.nvidia.com/de-de/gtc/s...

We wrote a blog that's a little different from what we normally publish. It's more focused towards starting out with ROS, and avoiding the complexity of installation. Is this interesting content for you? Should we make more of this? prefix.dev/blog/gettin... #ROS #ROS2 #robotics

Isaac ROS 5.0 is out and you can install it with Pixi! prefix.dev/blog/isaac-... #NVIDIA #IsaacROS #ROS #AI

Building bridges between open-source projects is a big part of why I joined @marimo.io. I got to know the @prefix.dev folks through @scipyconf.bsky.social, and worked together to make computational research easier to reproduce and share. Special thanks to @julianhofer.eu and Ruben Arts!

The Pixi team is at ROSCON in Toronto - come find the yellow backpacks if you want to chat! We keep spotting Pixi in so many cool robotics projects and it's making us proud. To get a glimpse of what we're working on, join the talk about the EU CRA this afternoon!

If you see one of these people #ROSCON, they are likely from prefix.dev! Come say hi, we're friendly! 💛 @OpenRoboticsOrg

We made it easy to install Isaac ROS! The new `isaac-forge` repository contains many upstream NVIDIA Isaac ROS packages to make them installable with Pixi. You can test it today on your #NIVIDA #Jetson! No docker needed! github.com/wolfv/isaac...

Congratulations to the Mojo 1.0 release @Modular! So glad to have you in our community, and seeing @clattner_llvm on stage with `pixi` in the background was definitely a highlight for us.

playground.rattler.build got a redesign and a recipe generator for PyPI, CRAN and CPAN. Paste a package name, get a recipe.yaml back.

rattler-build now builds for iOS and Android. Conda packages on mobile. Yes, really.

pixi update --offline now resolves against only what you already have: the package cache and local file:// channels. Air-gapped machines, planes, CI without egress.

Pixi now fully supports archspec, so you can create CPU-optimized environments and let Pixi handle the installation logic. Read more about it in the blogpost we updated: prefix.dev/blog/buildi...

Any Rust, C++ or Python project on GitHub can become a global tool on your machine. No recipe, no manifest in the repo. Just name the backend.

Building a git repo that never heard of Pixi used to mean forking it. Now you declare the build backend inline and Pixi builds it from source.

Conda packages have extras now. Optional dependency groups you declare and then consume, via v3 repodata. Plus when conditions and variant flags.

Using an NVIDIA Jetson, BTW #pytorch #nvidia #jetson

[system-requirements] is deprecated. Platforms now carry the requirements themselves. CUDA and glibc constraints inline, and you can name a target what you actually call it: jetson-nano.

Don't forget to join the RoboStack Community Meeting today! Thu 20 Aug; 16:00 CET robostack.github.io/CommunityMe...

Lastly, I'm a contributor to the `pixi-build-mojo` backend, which is what @prefix.dev can use to build Mojo projects: pixi.prefix.dev/latest/build... And allows you to install dependencies directly from GitHub, which is really cool!

PEP 723 only covers Python and PyPI, so Pixi reads tool.pixi for the rest. Which means conda dependencies in a standalone script. gdal from a single file, no build step.

A single Python file can now carry its own environment. pixi run --script hello.py Pixi reads PEP 723 inline metadata. No pixi.toml, no .pixi folder, no lock file unless you ask for one.

More and more multi-output recipes are now building through conda-forge's new rattler-build based staging. Fast, modern, Rust-powered builds are landing in conda-forge, one recipe at a time.

pixi 0.76 can now run standalone python scripts in isolated, on-demand environments. dependencies live inline via PEP 723, like uv supports, but pixi can layer on conda and system dependencies too. fun to build this with @prefix.dev folks. coming to a @marimo.io notebook near you SOON.

The big RISC-V migration has ... begun! Check out the status here: Big thanks to all maintainers helping out! conda-forge.org/status/migr...

Security tip for conda package authors: prefer environment-variable JSON files over activation scripts. Activation scripts run arbitrary shell code on every activation. Plain env-var JSON does the same job in most cases, with none of the code-execution risk.

mise, the popular dev-tool version manager, just adopted sigstore-rust, one of our open-source Rust libraries, to verify signed artifacts. Always good to see our building blocks powering other tools in the ecosystem. That is what open source is for.

New community tool: a live dashboard for the conda-forge staged-recipes queue. See which new packages are waiting for review, what's passing CI, and where things are stuck, all in one place. srdb.thath.net/

Scientific Python's nightly upload action is adopting pixi + grype: reproducible envs plus built-in vulnerability scanning in the release pipeline. Supply-chain security showing up right where maintainers already work. github.com/scientific-...

Pixi v0.75.0 now ships with an --offline mode. Install your environments directly from the shared cache, even on the train or plane! 🛫 Find out more here: pixi.prefix.dev/latest/refe...

GLIM, the real-time 3D LiDAR SLAM framework, is now available on conda-forge. One-line install with pixi or conda instead of building from source. Good news for the robotics crowd. See it in action: www.youtube.com/watch?v=CIf...

Embeddable #CommonLisp running in #Python via passagemath-ecl, compiled to #WebAssembly using @emscripten.org, packaged in the @prefix.dev emscripten-forge-4x channel, running serverless in the browser in a @jupyter.org JupyterLite session via Notebook.link. notebook.link/github/passa...

The rattler-build playground got a bit fancier! Now also generates recipes for PyPI, CRAN, and CPAN upstream sources. Try it out under playground.rattler.build

Our not-too-secret project allows Pixi to depend on packages built from source. Build graphs, multi-language support and more are handled transparently. Sounds great, doesn't it? Then let us finally introduce it officially! prefix.dev/blog/pixi-b...

📣 Thank you to our Gold Sponsor @prefix.dev for supporting #SciPy2026! Your work on Python packaging makes the entire open-source ecosystem faster and more reliable. 🐍 🔗 scipy2026.scipy.org