jaimergp
@rjai.me
Another PhD captured by open source.
⇒ Core team at @conda-forge.org.
⇒ Steering council at @conda.org.
⇒ Staff Software Engineer at @quansight.com.
⇒ Blogging at rjai.me.
⇒ Core team at @conda-forge.org.
⇒ Steering council at @conda.org.
⇒ Staff Software Engineer at @quansight.com.
⇒ Blogging at rjai.me.
Reposted by jaimergp
Question scoped to software in physics: Do you currently use PPC64LE architecture hardware for anything in your scientific workflow and is it important to you to have binary builds of software for that machine? Are there high impact examples that you can think of? Or is everything x64 or aarch64?
January 6, 2026 at 5:06 AM
Question scoped to software in physics: Do you currently use PPC64LE architecture hardware for anything in your scientific workflow and is it important to you to have binary builds of software for that machine? Are there high impact examples that you can think of? Or is everything x64 or aarch64?
Reposted by jaimergp
New blog post! A close look at Tahoe menu icons https://tonsky.me/blog/tahoe-icons/
It’s hard to justify Tahoe icons
Looking at the first principles of icon design—and how Apple failed to apply all of them in macOS Tahoe
tonsky.me
January 5, 2026 at 11:10 AM
New blog post! A close look at Tahoe menu icons https://tonsky.me/blog/tahoe-icons/
Reposted by jaimergp
Congratulations to our friends at Anaconda for shipping CEP-16 (sharded repodata). If you use conda-forge from anaconda.org servers, pixi & rattler-build got magically a lot faster!
conda.org/blog/sharde...
conda.org/blog/sharde...
Sharded repodata in conda (beta): an order of magnitude faster | conda.org
Conda fetches repodata much more quickly. Learn how we did it and who helped along the way.
conda.org
December 5, 2025 at 12:30 PM
Congratulations to our friends at Anaconda for shipping CEP-16 (sharded repodata). If you use conda-forge from anaconda.org servers, pixi & rattler-build got magically a lot faster!
conda.org/blog/sharde...
conda.org/blog/sharde...
Reposted by jaimergp
Anaconda.org and conda adopt sharded repodata! 🚀
CEP 16, introduced by @prefix.dev, splits the massive repodata files into per-project shards. This allows clients to only fetch what they need, resulting in significant speedups!
Instructions to opt-in and benchmarks at buff.ly/XUSXp9h
CEP 16, introduced by @prefix.dev, splits the massive repodata files into per-project shards. This allows clients to only fetch what they need, resulting in significant speedups!
Instructions to opt-in and benchmarks at buff.ly/XUSXp9h
December 5, 2025 at 11:01 AM
Anaconda.org and conda adopt sharded repodata! 🚀
CEP 16, introduced by @prefix.dev, splits the massive repodata files into per-project shards. This allows clients to only fetch what they need, resulting in significant speedups!
Instructions to opt-in and benchmarks at buff.ly/XUSXp9h
CEP 16, introduced by @prefix.dev, splits the massive repodata files into per-project shards. This allows clients to only fetch what they need, resulting in significant speedups!
Instructions to opt-in and benchmarks at buff.ly/XUSXp9h
Reposted by jaimergp
Reposted by jaimergp
For Python package management I use a mixture of pixi, uv and conda depending on the task I'm doing.
I wrote up a long form post about the history of these tools, why each one exists, and why I settled on these choices in my workflow.
jacobtomlinson.dev/posts/2025/p...
I wrote up a long form post about the history of these tools, why each one exists, and why I settled on these choices in my workflow.
jacobtomlinson.dev/posts/2025/p...
Python package managers: uv vs pixi?
When I talk to people about Python package management in 2025 I see the following tools in active use; uv, pixi, pip, conda, mamba, micromamba and poetry. There may be others, but I don’t hear much ab...
jacobtomlinson.dev
November 18, 2025 at 12:56 PM
For Python package management I use a mixture of pixi, uv and conda depending on the task I'm doing.
I wrote up a long form post about the history of these tools, why each one exists, and why I settled on these choices in my workflow.
jacobtomlinson.dev/posts/2025/p...
I wrote up a long form post about the history of these tools, why each one exists, and why I settled on these choices in my workflow.
jacobtomlinson.dev/posts/2025/p...
Reposted by jaimergp
Conda ≠ PyPI
Conda isn’t just another Python package manager-it’s a multi-language, user-space distribution system.
In this 3-part series, we explore the fundamental differences between conda and PyPI.
Part 1 is live now 👇
conda.org/blog/conda-i...
#conda #packaging #python
Conda isn’t just another Python package manager-it’s a multi-language, user-space distribution system.
In this 3-part series, we explore the fundamental differences between conda and PyPI.
Part 1 is live now 👇
conda.org/blog/conda-i...
#conda #packaging #python
Conda ≠ PyPI: Why Conda Is More Than a Package Manager | conda.org
Part 1 of the 'Conda Is Not PyPI' series—why conda is a multi-language user-space distribution, not just a Python package manager.
conda.org
October 29, 2025 at 2:06 PM
Conda ≠ PyPI
Conda isn’t just another Python package manager-it’s a multi-language, user-space distribution system.
In this 3-part series, we explore the fundamental differences between conda and PyPI.
Part 1 is live now 👇
conda.org/blog/conda-i...
#conda #packaging #python
Conda isn’t just another Python package manager-it’s a multi-language, user-space distribution system.
In this 3-part series, we explore the fundamental differences between conda and PyPI.
Part 1 is live now 👇
conda.org/blog/conda-i...
#conda #packaging #python
We are hiring!
@quansight.com is looking for a Senior Engineer for Python/C/C++ Packaging 📦. If you have dabbled with @python.org wheels, @conda.org packages, and the like, get in touch!
You can apply at job-boards.greenhouse.io/quansight/jo...
@quansight.com is looking for a Senior Engineer for Python/C/C++ Packaging 📦. If you have dabbled with @python.org wheels, @conda.org packages, and the like, get in touch!
You can apply at job-boards.greenhouse.io/quansight/jo...
Senior Engineer Python/C/C++ Packaging
Remote
job-boards.greenhouse.io
October 30, 2025 at 11:37 AM
We are hiring!
@quansight.com is looking for a Senior Engineer for Python/C/C++ Packaging 📦. If you have dabbled with @python.org wheels, @conda.org packages, and the like, get in touch!
You can apply at job-boards.greenhouse.io/quansight/jo...
@quansight.com is looking for a Senior Engineer for Python/C/C++ Packaging 📦. If you have dabbled with @python.org wheels, @conda.org packages, and the like, get in touch!
You can apply at job-boards.greenhouse.io/quansight/jo...
Reposted by jaimergp
TLDR; The PSF has made the decision to put our community and our shared diversity, equity, and inclusion values ahead of seeking $1.5M in new revenue. Please read and share. pyfound.blogspot.com/2025/10/NSF-...
🧵
🧵
The official home of the Python Programming Language
www.python.org
October 27, 2025 at 2:47 PM
TLDR; The PSF has made the decision to put our community and our shared diversity, equity, and inclusion values ahead of seeking $1.5M in new revenue. Please read and share. pyfound.blogspot.com/2025/10/NSF-...
🧵
🧵
Reposted by jaimergp
napari 0.6.6 is out! 🚀
This is a bugfix release following up 0.6.5: if something in your napari workflow unexplicably broke, you might want to update ;) Also, with the new bundle you can now "open files with > napari"! Check out the full release notes on the website: napari.org/stable/relea...
This is a bugfix release following up 0.6.5: if something in your napari workflow unexplicably broke, you might want to update ;) Also, with the new bundle you can now "open files with > napari"! Check out the full release notes on the website: napari.org/stable/relea...
napari: a fast, interactive viewer for multi-dimensional images in Python
view and explore 2D, 3D, and higher-dimensional arrays on a canvas;, overlay derived data such as points, polygons, segmentations, and more;, annotate and edit derived datasets, using standard data st...
napari.org
October 16, 2025 at 12:21 PM
napari 0.6.6 is out! 🚀
This is a bugfix release following up 0.6.5: if something in your napari workflow unexplicably broke, you might want to update ;) Also, with the new bundle you can now "open files with > napari"! Check out the full release notes on the website: napari.org/stable/relea...
This is a bugfix release following up 0.6.5: if something in your napari workflow unexplicably broke, you might want to update ;) Also, with the new bundle you can now "open files with > napari"! Check out the full release notes on the website: napari.org/stable/relea...
Part of the submission includes a couple of applications:
- pyproject-external: CLI to show and map the PEP 725 [external] tables
- external-metadata-mappings: schemas and example mappings for common identifiers.
You can browse them in this Streamlit app: external-metadata-mappings.streamlit.app
- pyproject-external: CLI to show and map the PEP 725 [external] tables
- external-metadata-mappings: schemas and example mappings for common identifiers.
You can browse them in this Streamlit app: external-metadata-mappings.streamlit.app
PEP 725 registry and mappings browser
This repository prototypes schemas for PEP-725-adjacent PURL-like registry and downstream mapping...
external-metadata-mappings.streamlit.app
September 22, 2025 at 4:32 PM
Part of the submission includes a couple of applications:
- pyproject-external: CLI to show and map the PEP 725 [external] tables
- external-metadata-mappings: schemas and example mappings for common identifiers.
You can browse them in this Streamlit app: external-metadata-mappings.streamlit.app
- pyproject-external: CLI to show and map the PEP 725 [external] tables
- external-metadata-mappings: schemas and example mappings for common identifiers.
You can browse them in this Streamlit app: external-metadata-mappings.streamlit.app
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 jaimergp
🏗️ Infrastructure wins that matter:
Isuru Fernando's breakdown of ABI3 conda support shows how "boring" backend improvements create massive downstream value.
Faster Python adoption, happier maintainers, lower costs - win-win-win!
Read the detailed post: buff.ly/J09DnBq
Isuru Fernando's breakdown of ABI3 conda support shows how "boring" backend improvements create massive downstream value.
Faster Python adoption, happier maintainers, lower costs - win-win-win!
Read the detailed post: buff.ly/J09DnBq
Support for ABI3 packages in conda!
See how Point72 teamed up with Quansight to fund support for ABI3 packages in the conda ecosystem.
labs.quansight.org
September 3, 2025 at 6:42 PM
🏗️ Infrastructure wins that matter:
Isuru Fernando's breakdown of ABI3 conda support shows how "boring" backend improvements create massive downstream value.
Faster Python adoption, happier maintainers, lower costs - win-win-win!
Read the detailed post: buff.ly/J09DnBq
Isuru Fernando's breakdown of ABI3 conda support shows how "boring" backend improvements create massive downstream value.
Faster Python adoption, happier maintainers, lower costs - win-win-win!
Read the detailed post: buff.ly/J09DnBq
TIL you can configure VS Code's Python debugger to ask for CLI arguments on every execution.
The key option is:
```
"configurations": [
...,
"args": "${command:pickArgs}"
]
```
More details: code.visualstudio.com/docs/python/...
The key option is:
```
"configurations": [
...,
"args": "${command:pickArgs}"
]
```
More details: code.visualstudio.com/docs/python/...
![VS Code debugger configuration, `launch.json`.
Contents:
{
"version": "0.2.0",
"configurations": [
{
"name": "Python Debugger: conda CLI",
"type": "debugpy",
"request": "launch",
"module": "conda",
"args": "${command:pickArgs}"
}
]
}](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:htblxuynwwgrtq4ffxxtpddr/bafkreibwrcnauw3v6jsyrpkftaeduavzmqr3wmuxzxmvqe3tvme7avfkxy@jpeg)
July 15, 2025 at 8:03 PM
TIL you can configure VS Code's Python debugger to ask for CLI arguments on every execution.
The key option is:
```
"configurations": [
...,
"args": "${command:pickArgs}"
]
```
More details: code.visualstudio.com/docs/python/...
The key option is:
```
"configurations": [
...,
"args": "${command:pickArgs}"
]
```
More details: code.visualstudio.com/docs/python/...
Reposted by jaimergp
🙌 We’re excited to have @matthewfeickert.com, John Kirkham, and Ruben Arts teaching us "Reproducible Machine Learning Workflows for Scientists with pixi" at #SciPy2025!
🔥 Learn how to create fast and reproducible ML environments using pixi, the next-gen package manager for scientific workflows.
🔥 Learn how to create fast and reproducible ML environments using pixi, the next-gen package manager for scientific workflows.
July 2, 2025 at 10:43 PM
🙌 We’re excited to have @matthewfeickert.com, John Kirkham, and Ruben Arts teaching us "Reproducible Machine Learning Workflows for Scientists with pixi" at #SciPy2025!
🔥 Learn how to create fast and reproducible ML environments using pixi, the next-gen package manager for scientific workflows.
🔥 Learn how to create fast and reproducible ML environments using pixi, the next-gen package manager for scientific workflows.
Reposted by jaimergp
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 6, 2025 at 1:49 PM
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
Reposted by jaimergp
We recently celebrated 10 years of @condaforge on our Zulip. I'd love to hear your story if you are involved with conda-forge. The project has grown to over 30'000 packages, and still grows at a crazy rate.
May 28, 2025 at 1:08 PM
We recently celebrated 10 years of @condaforge on our Zulip. I'd love to hear your story if you are involved with conda-forge. The project has grown to over 30'000 packages, and still grows at a crazy rate.
Reposted by jaimergp
This transition to a Public Benefit Corporation is a huge milestone for us ✨.
I am so excited about the future and the impact we will continue to have on the open source ecosystem.
I am so excited about the future and the impact we will continue to have on the open source ecosystem.
"Open source should be nurtured and elevated as a public good." - Travis Oliphant
That's why Quansight just became a Public Benefit Corporation, formalizing our commitment to sustainable OSS infrastructure that powers global innovation.
We're in this for the long haul. 🙌 bwnews.pr/3HdvSQ8
That's why Quansight just became a Public Benefit Corporation, formalizing our commitment to sustainable OSS infrastructure that powers global innovation.
We're in this for the long haul. 🙌 bwnews.pr/3HdvSQ8
May 27, 2025 at 7:55 PM
This transition to a Public Benefit Corporation is a huge milestone for us ✨.
I am so excited about the future and the impact we will continue to have on the open source ecosystem.
I am so excited about the future and the impact we will continue to have on the open source ecosystem.
Reposted by jaimergp
The first year of free-threaded Python
A recap of the first year of work on enabling support for the free-threaded build of CPython in community packages.
https://labs.quansight.org/blog/free-threaded-one-year-recap
A recap of the first year of work on enabling support for the free-threaded build of CPython in community packages.
https://labs.quansight.org/blog/free-threaded-one-year-recap
May 20, 2025 at 8:15 AM
The first year of free-threaded Python
A recap of the first year of work on enabling support for the free-threaded build of CPython in community packages.
https://labs.quansight.org/blog/free-threaded-one-year-recap
A recap of the first year of work on enabling support for the free-threaded build of CPython in community packages.
https://labs.quansight.org/blog/free-threaded-one-year-recap
Reposted by jaimergp
Just published: "The first year of free-threaded Python" – Learn how our team at Quansight Labs helped enable GIL-free Python in major packages! Read the blog: labs.quansight.org/blog/free-th.... Join Nathan Goldbaum & Lysandros Nikolaou at #PyConUS on May 16th to hear more about this work!
May 14, 2025 at 4:01 PM
Just published: "The first year of free-threaded Python" – Learn how our team at Quansight Labs helped enable GIL-free Python in major packages! Read the blog: labs.quansight.org/blog/free-th.... Join Nathan Goldbaum & Lysandros Nikolaou at #PyConUS on May 16th to hear more about this work!
Reposted by jaimergp
Thanks to months of consistent contributions by
lysnikolaou of @quansight.com (Lysandros Nikolaou), all of the mandatory dependencies of #aiohttp now ship free-threaded variants of #wheels!
This unlocks the same in aiohttp!
Find a minute to thank him, will you?
#aio-libs #Python #Packaging
lysnikolaou of @quansight.com (Lysandros Nikolaou), all of the mandatory dependencies of #aiohttp now ship free-threaded variants of #wheels!
This unlocks the same in aiohttp!
Find a minute to thank him, will you?
#aio-libs #Python #Packaging
April 17, 2025 at 6:27 AM
Thanks to months of consistent contributions by
lysnikolaou of @quansight.com (Lysandros Nikolaou), all of the mandatory dependencies of #aiohttp now ship free-threaded variants of #wheels!
This unlocks the same in aiohttp!
Find a minute to thank him, will you?
#aio-libs #Python #Packaging
lysnikolaou of @quansight.com (Lysandros Nikolaou), all of the mandatory dependencies of #aiohttp now ship free-threaded variants of #wheels!
This unlocks the same in aiohttp!
Find a minute to thank him, will you?
#aio-libs #Python #Packaging
Reposted by jaimergp
PEP 770 has been approved! 🥳 Now you can add SBOMs to describe bundled dependencies of Python packages
discuss.python.org/t/pep-770-im...
discuss.python.org/t/pep-770-im...
PEP 770: Improving measurability of Python packages with Software Bill-of-Materials
With apologies for the delay (lock files, illness, and a kid turning 1 take up a lot of time 😅), but I’m happy to say that I accept PEP 770! With the reduced scope to *.dist-info/sboms along with cod...
discuss.python.org
April 11, 2025 at 8:05 PM
PEP 770 has been approved! 🥳 Now you can add SBOMs to describe bundled dependencies of Python packages
discuss.python.org/t/pep-770-im...
discuss.python.org/t/pep-770-im...
Reposted by jaimergp
🎉 Happy 10th Anniversary, @conda-forge.org 🎂 From humble beginnings to 1 BILLION monthly downloads, you've revolutionized how we share and distribute scientific software. Read about the incredible journey and impact here: buff.ly/vEg4mUH #CondaForge #OpenSource
April 11, 2025 at 1:02 PM
🎉 Happy 10th Anniversary, @conda-forge.org 🎂 From humble beginnings to 1 BILLION monthly downloads, you've revolutionized how we share and distribute scientific software. Read about the incredible journey and impact here: buff.ly/vEg4mUH #CondaForge #OpenSource
Reposted by jaimergp
Today we celebrate the 10th anniversary of conda-forge!
Our beloved Github organization was created around this time on Apr 11th, 2015.
More details:
- Blog post: conda-forge.org/blog/2025/04...
- Zulip thread: conda-forge.zulipchat.com#narrow/chann...
Our beloved Github organization was created around this time on Apr 11th, 2015.
More details:
- Blog post: conda-forge.org/blog/2025/04...
- Zulip thread: conda-forge.zulipchat.com#narrow/chann...
Ten years of conda-forge! | conda-forge | community-driven packaging for conda
Today, 2025-04-11, marks the 10th anniversary of the conda-forge community.
conda-forge.org
April 11, 2025 at 7:38 AM
Today we celebrate the 10th anniversary of conda-forge!
Our beloved Github organization was created around this time on Apr 11th, 2015.
More details:
- Blog post: conda-forge.org/blog/2025/04...
- Zulip thread: conda-forge.zulipchat.com#narrow/chann...
Our beloved Github organization was created around this time on Apr 11th, 2015.
More details:
- Blog post: conda-forge.org/blog/2025/04...
- Zulip thread: conda-forge.zulipchat.com#narrow/chann...