Wolf Vollprecht
@wolfvollprecht.bsky.social
Working on software package management at @prefix.dev
PackagingCon is back in smaller format as a Devroom at FOSDEM 2026! We would love to see you there - and hear a lot of interesting talks.
blog.ecosyste.ms/2025/11/06/f...
blog.ecosyste.ms/2025/11/06/f...
Call for Participation: Package Managers devroom at FOSDEM 2026
We are excited to announce the Call for Participation for the Package Managers devroom at FOSDEM 2026, taking place on Saturday, 31st January 2026 at the Université libre de Bruxelles, Belgium.
blog.ecosyste.ms
November 14, 2025 at 3:04 PM
PackagingCon is back in smaller format as a Devroom at FOSDEM 2026! We would love to see you there - and hear a lot of interesting talks.
blog.ecosyste.ms/2025/11/06/f...
blog.ecosyste.ms/2025/11/06/f...
Reposted by Wolf Vollprecht
Learn how you can use Pixi with #ROS!
We've put together some videos to showcase some Pixi features that are helpful for ROS development.
YouTube Playlist: www.youtube.com/playlist?li...
#ROSCon #ROSCon2025
We've put together some videos to showcase some Pixi features that are helpful for ROS development.
YouTube Playlist: www.youtube.com/playlist?li...
#ROSCon #ROSCon2025
ROS with Pixi
Video's about how to use Pixi and ROS packages together.
www.youtube.com
October 27, 2025 at 1:00 PM
Learn how you can use Pixi with #ROS!
We've put together some videos to showcase some Pixi features that are helpful for ROS development.
YouTube Playlist: www.youtube.com/playlist?li...
#ROSCon #ROSCon2025
We've put together some videos to showcase some Pixi features that are helpful for ROS development.
YouTube Playlist: www.youtube.com/playlist?li...
#ROSCon #ROSCon2025
Reposted by Wolf Vollprecht
What ROS at an Airport Apple Store?!
Pixi makes installation so easy, we can install ROS anywhere now.
#ROSCon2025 #ROSCon #ROS
Pixi makes installation so easy, we can install ROS anywhere now.
#ROSCon2025 #ROSCon #ROS
October 28, 2025 at 4:33 AM
What ROS at an Airport Apple Store?!
Pixi makes installation so easy, we can install ROS anywhere now.
#ROSCon2025 #ROSCon #ROS
Pixi makes installation so easy, we can install ROS anywhere now.
#ROSCon2025 #ROSCon #ROS
Reposted by Wolf Vollprecht
What!? Multiple #ROS distros on one machine 🤯.
No Docker, No VM, No dual-boot needed!
www.youtube.com/watch?v=oiX...
#ROSCon #ROSCon2025
No Docker, No VM, No dual-boot needed!
www.youtube.com/watch?v=oiX...
#ROSCon #ROSCon2025
Multiple ROS Distro's on One Machine!
Pixi allows you to install ROS packages from a RoboStack channel with ease.This video shows you that on a MacBook but the same example works on Linux, Mac an...
www.youtube.com
October 26, 2025 at 9:01 AM
What!? Multiple #ROS distros on one machine 🤯.
No Docker, No VM, No dual-boot needed!
www.youtube.com/watch?v=oiX...
#ROSCon #ROSCon2025
No Docker, No VM, No dual-boot needed!
www.youtube.com/watch?v=oiX...
#ROSCon #ROSCon2025
Reposted by Wolf Vollprecht
Reposted by Wolf Vollprecht
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.
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.
prefix.dev
October 15, 2025 at 6:11 AM
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.
Reposted by Wolf Vollprecht
I just tried Pixi from @prefix.dev for the first time.
a man in a suit and tie is screaming with his mouth open and says holy crap are you seeing this ?
ALT: a man in a suit and tie is screaming with his mouth open and says holy crap are you seeing this ?
media.tenor.com
October 7, 2025 at 3:56 PM
I just tried Pixi from @prefix.dev for the first time.
Reposted by Wolf Vollprecht
I have submitted by first draft PEP! 📦
PEP 804 complements PEP 725 ([external] dependency metadata) with a mapping mechanism to translate ecosystem-agnostic identifiers to your favourite package manager.
More info:
- PEP 725: discuss.python.org/t/103890
- PEP 804: discuss.python.org/t/103891
PEP 804 complements PEP 725 ([external] dependency metadata) with a mapping mechanism to translate ecosystem-agnostic identifiers to your favourite package manager.
More info:
- PEP 725: discuss.python.org/t/103890
- PEP 804: discuss.python.org/t/103891
PEP 804: An external dependency registry and name mapping mechanism
Hello everyone! On behalf of my co-authors @pradyunsg, @rgommers, @mgorny and @msarahan, I’d like to share our work on this new PEP 804 “An external dependency registry and name mapping mechanism”. ...
discuss.python.org
September 22, 2025 at 4:29 PM
I have submitted by first draft PEP! 📦
PEP 804 complements PEP 725 ([external] dependency metadata) with a mapping mechanism to translate ecosystem-agnostic identifiers to your favourite package manager.
More info:
- PEP 725: discuss.python.org/t/103890
- PEP 804: discuss.python.org/t/103891
PEP 804 complements PEP 725 ([external] dependency metadata) with a mapping mechanism to translate ecosystem-agnostic identifiers to your favourite package manager.
More info:
- PEP 725: discuss.python.org/t/103890
- PEP 804: discuss.python.org/t/103891
Reposted by Wolf Vollprecht
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!
September 18, 2025 at 2:00 PM
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!
Reposted by Wolf Vollprecht
It's always a pleasure to get invoices from Azure. Why? Because it means our @condaforge.org sponsorship is being used! We have been sponsoring a big Windows machine through CirunHQ for the past year to build PyTorch, libmagma, and other hard-to-build software for Windows.
September 17, 2025 at 10:01 AM
It's always a pleasure to get invoices from Azure. Why? Because it means our @condaforge.org sponsorship is being used! We have been sponsoring a big Windows machine through CirunHQ for the past year to build PyTorch, libmagma, and other hard-to-build software for Windows.
Reposted by Wolf Vollprecht
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...
Mutex packages in the Conda world
Mutex packages are a useful mechanism to guide the solver towards certain dependencies, mutually excluding other dependency trees.
prefix.dev
September 11, 2025 at 6:05 PM
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...
Reposted by Wolf Vollprecht
Package building with Pixi is being rolled out! Dive into our latest blog post on crafting C++ packages.
And guess what? It’s not just for C++; Pixi plays nice with Python, Rust, ROS, Mojo, and beyond!
prefix.dev/blog/pixi-b...
And guess what? It’s not just for C++; Pixi plays nice with Python, Rust, ROS, Mojo, and beyond!
prefix.dev/blog/pixi-b...
Build C++ projects with Pixi
Painless dependency management (including shared libraries), monorepos and CI/CD is here for C++/CMake projects with Pixi.
prefix.dev
September 5, 2025 at 10:00 AM
Package building with Pixi is being rolled out! Dive into our latest blog post on crafting C++ packages.
And guess what? It’s not just for C++; Pixi plays nice with Python, Rust, ROS, Mojo, and beyond!
prefix.dev/blog/pixi-b...
And guess what? It’s not just for C++; Pixi plays nice with Python, Rust, ROS, Mojo, and beyond!
prefix.dev/blog/pixi-b...
Reposted by Wolf Vollprecht
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.
September 1, 2025 at 2:37 PM
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.
Reposted by Wolf Vollprecht
Another deep dive in the technology behind Conda package managers: file linking! Did you know that there are symlinks, hardlinks and reflinks? Reflinks are the best – copy on write is space efficient and isolates the cache.
Learn more: prefix.dev/blog/what-l...
Learn more: prefix.dev/blog/what-l...
What linking means when installing a Conda package
Package managers face a fundamental challenge: how to efficiently place files from a package cache into multiple environments without excessive disk usage or compromising isolation.
prefix.dev
July 17, 2025 at 12:26 PM
Another deep dive in the technology behind Conda package managers: file linking! Did you know that there are symlinks, hardlinks and reflinks? Reflinks are the best – copy on write is space efficient and isolates the cache.
Learn more: prefix.dev/blog/what-l...
Learn more: prefix.dev/blog/what-l...
Reposted by Wolf Vollprecht
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!
July 4, 2025 at 8:10 AM
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!
Reposted by Wolf Vollprecht
“Raise your hand if you were able to install everything with pixi and run the simulation-based inference tutorial notebook.”
github.com/cranmer/sbi-...
github.com/cranmer/sbi-...
July 3, 2025 at 11:11 AM
“Raise your hand if you were able to install everything with pixi and run the simulation-based inference tutorial notebook.”
github.com/cranmer/sbi-...
github.com/cranmer/sbi-...
Reposted by Wolf Vollprecht
Reposted by Wolf Vollprecht
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...
Meet virtual packages - a clever solution to inject system compatibility information to the SAT solver to ensure compatibility.
prefix.dev/blog/virtua...
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.
prefix.dev
June 18, 2025 at 12:28 PM
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...
Meet virtual packages - a clever solution to inject system compatibility information to the SAT solver to ensure compatibility.
prefix.dev/blog/virtua...
Reposted by Wolf Vollprecht
Interested in Software Supply Chain Security? We are! That's why we helped to get `cosign` on conda-forge: `cosign` can be used to sign container images or other artifacts with `sigstore`, and you can now easily install it with `pixi global install cosign` 🎉
June 12, 2025 at 11:31 AM
Interested in Software Supply Chain Security? We are! That's why we helped to get `cosign` on conda-forge: `cosign` can be used to sign container images or other artifacts with `sigstore`, and you can now easily install it with `pixi global install cosign` 🎉
Reposted by Wolf Vollprecht
Thanks to a big internal Pixi refactor to support recursive source dependencies, we have much improved snapshot tests. Now we can observe all the actions Pixi takes to resolve, instantiate and build packages from source:
June 11, 2025 at 12:00 PM
Thanks to a big internal Pixi refactor to support recursive source dependencies, we have much improved snapshot tests. Now we can observe all the actions Pixi takes to resolve, instantiate and build packages from source:
Reposted by Wolf Vollprecht
How do you make compiled software with hardcoded paths work anywhere?
255-character placeholders, $ORIGIN rpaths, and platform-specific binary patching.
We explain how Conda packages achieve relocatability:
prefix.dev/blog/what-i...
255-character placeholders, $ORIGIN rpaths, and platform-specific binary patching.
We explain how Conda packages achieve relocatability:
prefix.dev/blog/what-i...
What is a Conda package, actually?
At its core, a conda package really is just a "glorified" tarball—a compressed archive of files with some metadata attached.
prefix.dev
June 11, 2025 at 12:58 PM
How do you make compiled software with hardcoded paths work anywhere?
255-character placeholders, $ORIGIN rpaths, and platform-specific binary patching.
We explain how Conda packages achieve relocatability:
prefix.dev/blog/what-i...
255-character placeholders, $ORIGIN rpaths, and platform-specific binary patching.
We explain how Conda packages achieve relocatability:
prefix.dev/blog/what-i...
Reposted by Wolf Vollprecht
You might have already heard that Pixi is written in Rust, but did you know that Pixi is also useful when creating Rust programs? Watch Julian's talk "Pixi: the missing companion to cargo" to find out more: www.youtube.com/watch?v=Hso...
Julian Hofer - Pixi: the missing companion to cargo
Recording of a talk given at the Scientific Computing in Rust 2025 online workshop.With cargo, package management becomes easy until you depend on Fortran, C...
www.youtube.com
June 10, 2025 at 10:04 AM
You might have already heard that Pixi is written in Rust, but did you know that Pixi is also useful when creating Rust programs? Watch Julian's talk "Pixi: the missing companion to cargo" to find out more: www.youtube.com/watch?v=Hso...
You should have told me when we had beers yesterday!
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
June 7, 2025 at 5:46 AM
You should have told me when we had beers yesterday!
Reposted by Wolf Vollprecht
It all "just worked" from 1 command ... yes, that is the point!
June 6, 2025 at 1:00 PM
It all "just worked" from 1 command ... yes, that is the point!