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Latest Posts by Prefix.dev - the Pixi company

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Are you dreaming of your own specialized *-forge? Our new build tool "rattler-build" makes it simple. Check out our new docs on how to create a custom "r-forge", "rust-forge", "ruby-forge", ... rattler-build.prefix.dev/latest/tips...

2 days ago 3 2 0 0
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Why Package Installs Are Slow (And How to Fix It) | Towards Data Science How sharded indexing patterns solve a scaling problem in package management

Very informative blog post by @anacondainc.bsky.social Dan Yeaw. It's cool to see how our innovations are lifting up the whole ecosystem. Conda (and soon Mamba) are adopting sharded repodata.

towardsdatascience.com/why-package...

5 days ago 0 0 0 0
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Thanks to @github and @microsoft @azure, @condaforge now natively compiles on macOS Arm64 and Linux Aarch64 machines. Thank you!

6 days ago 5 0 0 0

We are highly motivated by the idea of making it easy to build & cross-compile for RISC-V hardware, and support open hardware with a lot of scientific and other open software. RISC-V and the idea of conda-forge & Pixi align very well! cc @eurohpc-ju.bsky.social @riscvinternational.bsky.social

6 days ago 0 0 0 0
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Pixi supports RISC-V As the RISC-V ecosystem matures from silicon to software, one piece has been missing: a modern, cross-platform package manager that makes it as easy to develop on RISC-V as on x86 or ARM. That changes today. Pixi now natively supports RISC-V (riscv64), bringing the full power of the conda ecosystem to open hardware.

RISC-V in Europe and China has real momentum. Pixi actually has supported this new hardware architecture since a while, but the @openKylin project has made it real. In this blog post we explore how Pixi support RISC-V!

prefix.dev/blog/pixi-o...

#RISCV #EuroHPC

6 days ago 6 1 1 0
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Big news: We're rebranding Pixi to VIPER. Turns out ditching the snake theme was a mistake and we're slithering back! New mascot incoming. Thoughts? 🐍

1 week ago 5 0 0 1
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Bioconda now recommends Pixi ahead of conda and mamba as the way to get started. This means a lot to us. We're all-in on making Pixi the best tool for scientific package management.

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Add Pixi manifest by EliaCereda · Pull Request #1557 · bitcraze/crazyflie-firmware Pixi (pixi.sh, https://arxiv.org/abs/2511.04827) is a next-gen package manager for reproducible development setups. It provides a streamlined user experience, self-contained environments and a sing...

We'll continue pushing to make the lives of robotics developers better - from embedded, to simulation and ROS2 support.

Find the PR here: github.com/bitcraze/cr...

1 week ago 0 0 0 0
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The main firmware for the Crazyflie Nano Quadcopter has a pixi.toml now.

To quote: "Pixi has a great potential to make our embeded developer lives much easier so I am looking forward at it becoming even better for embedded development! And I would welcome a PR for 'pixi build'"

1 week ago 1 1 1 0
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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

1 week ago 5 3 0 0
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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...

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Find the documentation here:
pixi.prefix.dev/latest/buil...

1 week ago 0 0 0 0
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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!

1 week ago 12 4 1 0
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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.

2 weeks ago 3 3 0 0

Yes, you can do `pixi global install --git github.com. --branch foobar` or `pixi add --git ...`

2 weeks ago 1 0 0 0

Just run `pixi build` and the package will come rolling out.

2 weeks ago 0 0 0 0
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Don’t like writing recipes? With Pixi packages, it’s a lot less work to package up remote projects!

This is all the configuration needed to build the ruff project into a conda package with Pixi. 🤯

2 weeks ago 3 1 1 1

Of course! Do you want a demo sometime soon?

2 weeks ago 0 0 1 0
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Debugging builds - Rattler-Build

Our documentation has been enhanced to cover all the debugging scenarios: rattler-build.prefix.dev/latest/debu...

Let us know how it goes if you try it out!

2 weeks ago 0 0 0 0
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We want to make it easier to build packages!

For that, we have a unified debug experience in `rattler-build` now. You can run `debug setup`, enter a `debug shell`, and even add some dependencies into the host environment with `debug host-add`.

2 weeks ago 1 0 1 1

This is very powerful for the R ecosystem as often, system level dependencies are underspecified. CRAN packages generally need to be built from source. pixi-build-r makes that super smooth - you don't even have to release to CRAN! You can just depend on another project from git.

2 weeks ago 2 2 1 0
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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.

2 weeks ago 10 4 1 0
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Exciting news!

We're thrilled to welcome Pavel as our first Pixi core maintainer from outside Prefix! With his extensive contributions, we have full confidence in his stewardship of the project. Thank you for your past work, and here’s to an even stronger collaboration ahead!

2 weeks ago 8 0 0 1

We're looking forward to more converted recipes on tdejager.github.io/are-we-reci... 🚀

2 weeks ago 1 0 0 0
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CEP XXXX: define the `staging` output for split builds in the v1 recipe format by wolfv · Pull Request #102 · conda/ceps This CEP defines the staging output. It is a special output type that does not turn into a package. Instead, other outputs can inherit from it and use the "dirty" work dir to cont...

Low level packages such as `zlib`, `zstd` or large packages such as Pytorch are often "split" into headers, libraries and man-pages. The staging output makes it possible to build once, then split. Slice and dice the packages.

Discuss it here: github.com/conda/ceps/...

2 weeks ago 0 0 1 0
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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!

2 weeks ago 5 2 1 0

The command to try this yourself:

pixi exec -s newton-all -s pytorch -s usd-exchange python -m newton.examples robot_policy

2 weeks ago 2 0 0 0
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You can now install the Open-Source physics engine, Newton, with Pixi! 🤖

Getting a full humanoid robot simulator has never been easier, just run one command!

Check out the original announcement: github.com/newton-phys...

#robotics #NVIDIA #warp #newton

2 weeks ago 6 2 2 0

We couldn't have done it without the support of many great people including Dan Yeaw and Jakov Smolić from @anacondainc who is also sponsoring this work. We are grateful to Axel Obermeier
for his input in design discussions & the many people who convert feedstocks to recipe v1

2 weeks ago 1 0 0 0
A code snippet shows details of a Flask package source with its attestation that will be validated by Rattler-Build

A code snippet shows details of a Flask package source with its attestation that will be validated by Rattler-Build

We also worked on making the conda ecosystem supply-chain security aware. This is why we added experimental support for validating attestations of sources.

2 weeks ago 1 0 1 0