2023-04-26 Conda Community Meeting

Zoom link · What time is the meeting in my time zone

Various parts of the conda community gather on a regular basis. This meeting brings together all of these sub-communities for a community wide call.

Attendees

Name	Initials	Affiliation	GH Username
Cheng H. Lee	CHL	Anaconda/cf	chenghlee
Bianca Henderson	BH	Anaconda	beeankha
Dave Clements	DPC	Anaconda	tnabtaf
Katherine Abrikian	KCA	Anaconda	kalawac
Eric Dill	ED	Anaconda/cf	ericdill
Filipe Fernandes	FF	conda-forge	ocefpaf
Chris Ostrouchov	CO	Quansight	costrouc
Marius van Niekerk	MvN	VoltronData/cf	mariusvniekerk
Jaime Rodríguez-Guerra	JRG	Quansight/cf	jaimergp
Wolf Vollprecht	WV	prefix.dev	wolfv

12 people in total

Introductions

• Chris Ostrouchov
  • Working with conda-store and conda-libmamba-solver.
  • Happy to give quick conda-store demo if people want to see it.

Announcements

• (CHL) conda organization on PyPI
• (CHL) Yanked conda packages on PyPI
  • TODO: Add replacement sdist to suggest miniconda/miniforge instead
• (TH, as channeled by BH) conda.org is out for a "soft" launch
  • Always looking for content for our blog; everything from the conda ecosystem is fair game (conda, conda-forge, mamba, etc.)
  • Travis will be writing a blog article eventually on plugins
  • Interested in joining the ongoing efforts? Join our chat room
  • Repo: https://github.com/conda-incubator/conda-dot-org

New Agenda Items

• (CHL/JRG) Per-artifact run_exports in index files
  • Big choice: Separate file, or just append to existing repodata schema
  • Instead of making repodata bigger, could we make it smaller? (Yes, please)
  • Leaning towards separate file. (Smaller; less commonly used information)
  • Let's draft a CEP; put formal schema in conda/schemas
  • Historical caution: Having that information in channeldata.json broke conda-forge for a while.
  • Having separate run_exports file could allow us to patch, rather than re-build.
• (WV) rattler-build:
  • Source: https://github.com/prefix-dev/rattler-build
  • Docs: https://prefix-dev.github.io/rattler-build
  • It works! (For generating simple packages)
  • Recipe format essentially the same as boa
  • Still some features to add (e.g., ignore run exports; multi-output)
  • Putting effort into reproducible builds
    • Can override timestamps, permissions in conda package artifact (yay!)
    • Want to provide option to re-use (previous) build prefix
• (WV/JRG) Proposal for new, GHA-inspired recipe format: https://gist.github.com/jaimergp/3a1dcdf524583a93529f0d122e61856a
  • Composible; extensible (plugins?); more explicit; etc.
  • Exciting potential to cache outputs, then drop in to debug build
  • Should we continue pursuing it? (Probably but need to find the time)
• (WV): blog post on prefix.dev highlighting repodata patches now :) https://prefix.dev/blog/repodata_patching
  • Also exposed in graphql API: https://prefix.dev/docs/prefix/graphql_api
  • Can you timestamp when a specific package patch was generated? (No, and not sure where to get that data.)
• (JRG): conda-build + conda-libmamba-solver? :D
  • Would appreciate help with: https://github.com/conda/conda-libmamba-solver/pull/194