Skip to main content

2020-07-08 conda-forge core meeting


  • Jonathan Helmus
  • Marius van Niekerk
  • Filipe Fernandes
  • Matthew Becker
  • Keith Kraus
  • CJ Wright
  • Cheng Lee
  • Wolf Vollprecht
  • Eric Dill
  • Uwe Korn
  • Marcel Bargull
  • Anthony Scopatz
  • John Kirkham
  • Isuru Fernando
  • Lori Burns
  • Marcelo Trevisani


Your agenda items

  • (CJ) budget, also finance subteam creation

  • intros for new folks on the call

  • (FF) Open Force Field request to NumFOCUS

    • Likely looking to engage in a contract relationship, Anthony interested
    • We could create a list of "suggested" companies/persons who do this type of work
    • Where should we land this information on the website?
  • (FF) Should we do Outreachy as part of an effort to support diversity in tech? Advantages are low cost and high impact. Disadvantages are the time effort from the mentors.

  • (ED) Did we need to document anything from the CUDA 11 stuff that Keith brought up last time? No.

    • (KK) CUDA 11 support
      • CUDA 11 dropped CentOS 6 support
      • ties into CentOS 7 migration above
      • cudatoolkit 11 -
        • Make sure we have a glibc run constrain line TODO: Jonathan will review this PR
      • Add Docker image (need to double check how FROM can be adjusted conditionally)
        • Needs a recent docker version but this should work
          ARG IMAGE=ubuntu:latest
          FROM ${IMAGE}
  • (KK) CUDA Toolkit in conda-forge update

    • With a few changes to the recipe conda-forge will be able to build+distribute cudatoolkit
    • TODO: Eric will get the NVBug link from Keith and archive it in the conda-forge google drive.
    • TODO: John K. will update the cuda toolkit feedstock on the git repo to note the NVBug link to the internal NVIDIA issue tracker
    • TODO: Jonathan will update docs to note that some non-exhaustive list of packages (like cuda-toolkit, MKL, etc.)
  • (IF) strict channel priority

    • Needed for PyPy
    • Needed for Cos7
    • Remove packages that we don't fully support. For eg: there are 3 builds of scipy on windows.
    • Older versions of tensorflow?
    • Could make strict a option in conda_forge.yaml
  • Discussion of "hard to build packages"

    • rstudio (redist may be somewhat sketchy?)
    • tensorflow
    • qt
    • scipy on Windows
    • Should we publish a list and ask for help on those?
  • (UK) CFEP-18, please vote

  • (UK) Voting Fatigue

    • discussed various alternatives
    • sub-teams
  • (UK) "GPL-free" variants

    • Some packages like Python, sqlite have a dependency on libreadline which is GPL licensed. There might be arguments that this doesn't trickle up the stack but Corporate Compliance/IT have a different stance on that.
    • Similar issues with other packages where the GPL-dependency is quite often an optional one.
    • We probably want to have that functionality enabled by default but provide an alternative variant without GPL dependencies.
  • (CL) msys2 packages

    • Anaconda deciding on update plans for "defaults" channel

Active votes

Subteam updates


  • (CJ) Status of openjdk, r-java stalled out
Stuff from last week that we didn't get to








  • still need to finish CFEP-13 (can move ahead now that latest smithy is out)

CI infrastructure

Compiler upgrade

CFEP updates

Open PRs

  • cfep-04 X11 and CDT policy

    • INACTIVE - Merge in with some inactive-esque status?
    • Needs new champion. Thanks for your work on this pkgw! Has unaddressed comments from pkgw as from Jan 10, 2020
  • cfep-06 Staged-recipes review lifecycle

    • INACTIVE - Merge in with some inactive-esque status?
    • Lingering comment from @saraedum. @jakirkham, can you reply? Has unadressed comment from @saraedum from Jan 8, 2020
    • (MRB) The stalebot has solved the worst of the issues here. I think we could defer this one permanently.
  • cfep-10 Feedstock statuses, unmaintained

    • INACTIVE - Merge in with some inactive-esque status?
    • Needs another review. Has unaddressed updates from pkgw as of Jan 11, 2020
  • cfep-12 Removing packages that violate the terms of the source package

    • Stalled since May 26, 2020
    • Active debate about moving to "broken" vs deleting from conda-forge channel
    • Active vote, ends on 2020-03-11
    • What were the results of the vote?
    • Did we hear back from NumFOCUS?
  • cfep-17 Handling pin backports and dependency rebuilds

    • Stalled debate about implementation details between Isuru, CJ and Matt


Check in on previous action items

Copy previous action items from last meeting agenda.

This meeting

  • Eric will get the NVBug link from Keith and archive it in the conda-forge google drive.
  • Eric to add a new page to our docs around how to engage with conda-forge and affiliated in a commercial relationship.
  • John K. will update the cuda toolkit feedstock on the git repo to note the NVBug link to the internal NVIDIA issue tracker
  • Jonathan will update docs to note that some non-exhaustive list of packages (like cuda-toolkit, MKL, etc.)
  • Jonathan will review this PR

Last meeting

2 meetings ago

3 meetings ago

  • (CJ) Form finance subteam
  • (ED) document strategies for reproducible environments using conda-forge
  • (ED) Add conda-forge page about commercial engagements
    • Create a list of "suggested" companies/persons who do external companies can engage with for custom work
  • (UK) Static libraries stuff
    • Add linting hints to builds to find them
    • Recommend how to package them -> CFEP-18
    • We should write docs saying we don't provide support and this is a bad idea. -> CFEP-18

Move to Issue Tracker

  • (Kale) schedule conda working group
  • cfep-10 next steps: CJ to call a vote for feedback
  • cfep-06 next steps: Ask staged recipes team to champion this CFEP and move it forward
  • jakirkham & CJ-wright to sync on adding CUDA to the migration bot
  • (Eric) Scheduling Anaconda <-> conda-forge sync on requirements gathering
    • Will try and get this scheduled in the next month.
  • (Anthony) Reach out to NumFocus to figure out legal ramifications of not including licenses in files.
  • (Eric) check internally for funding levels for hotels & flying folks from the community in?
  • (Eric) Figure out finances of conda-forge to support themselves?
  • (jjhelmus) Open up CFEP for which python's we're going to support
  • (jakirkham) write a blog post on CUDA stuff we discussed today
  • (jakirkham) update docs on how to add CUDA support to feedstocks
  • (jakirkham) will open an issue on conda-smithy to investigate Drone issues. (ping the aarch team)
  • (ED) Who we are page? Some combination of a FAQ and a who is everyone. FAQ things like:
    • who's the POC for CF <> Anaconda, CF <> NumFocus, CF <> Azure
    • who's the POC for the various subteams?
    • Informal information: roles, day jobs, bios, the whole nine yards, why you're here, etc.
    • Public or internal? I don't really care either way. Anyone feel strongly one way or the other?
    • opt-in to public bios
    • software carpentry has a large number of instructors and has
    • some concern about "yet another place to keep stuff up to date"