conda-forge core meeting 2023-05-03

Add new agenda items under the Your __new__() agenda items heading

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Attendees

Name	Initials	GitHub ID	Affiliation
Dave Clements	DPC	tnabtaf	Anaconda
Filipe Fernandes	FF	ocefpaf	conda-forge
Cheng H. Lee	CHL	chenghlee	conda-forge/Anaconda
Marius van Niekerk	MvN	mariusvniekerk	VoltronData/cf
Ryan May	RMM	dopplershift	Unidata/cf
Jannis Leidel	JL	jezdez	Anaconda/cf
John Kirkham	JK	jakirkham	NVIDIA/cf
Marcel Bargull	MB	mbargull	Bioconda/cf
Avalon	A	uwuvalon	Anaconda
Jaime Rodríguez-Guerra	JRG	jaimergp	Quansight/cf

18 people total

Introductions

• Andrew Vallette on the packaging team at Anaconda.

Standing items

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From previous meeting(s)

• (WV) rattler-build - new conda package build tool: https://github.com/prefix-dev/rattler-build
  • builds conda packages from recipe format that looks a lot like BOA
  • Writes metadata in rattler format
  • Did a live demo.
  • Aiming to give better diagnostics
  • MRB: BOA Spec?
    • We need to figure out what to do.
    • Need a defined spec that everyone can write to
    • JL: what do we need to do create a spec?
      • Selectors,
      • MVN: version number in spec. People were in violent agreement.
    • JL: We need a spec
    • WV: we have a JSON schema.
    • JK: argues for a new YAML format. Would be interested in being involved in Spec writing group
    • Some recipes will/may be left behind.
    • ACTION: Discusss this on Conda call next week.
• (JK) New CTK packages / CUDA 12
  • Opening CUDA 12 migrator
    • Package layout changes:
      • https://github.com/conda-forge/conda-forge-pinning-feedstock/pull/4400
      • Document?
      • Message?
      • Incremental rollout?
      • Marius suggested bot message customization
        • May need to go in bot code
        • Could add change to bot code to
  • (IF) Has question about layout
    • (JK) Using cuda would be ok
      • (IF) Changes a lot of things for CMake
        • (JK) Discussion to have with Robert Maynard
    • (JK)
  • (Longer-term) CUDA 11 backport? (punted to later meeting)
    • New style packages on older CUDA versions
    • What version to start with (nvidia channel has 11.4)?
    • cudatoolkit becomes metapackage?
    • Potential to drop some CUDA specific things
      • Docker images
      • conda-forge-ci-setup simplification
• (JK) Windows MinGW & UCRT
  • https://github.com/conda-forge/r-base-feedstock/issues/248
  • https://github.com/conda-forge/conda-forge.github.io/issues/1654
  • https://github.com/conda-forge/conda-forge.github.io/issues/1044
  • (AV): Anaconda is looking into ways to fix this issue
    • Do we binary repack MSYS2 packages? Or rebuild?
    • How can we automate UCRT-based MSYS2 Windows?
    • Could even automate recipe generation
      • https://github.com/conda-forge/msys2-recipes
    • (MRB) CDT approach could be reused here
      • https://github.com/conda-forge/cdt-builds
    • (IF) What do we want packaged
      • May need customization; e.g., run_exports
    • (AV): Will share work as it progresses
    • (MB): Old MinGW use subfolder?
      • Do we want to change this for UCRT? Or keep the same?
      • (IF) Depends on what we package
• (JK) GLIBC 2.28
  • https://github.com/conda-forge/conda-forge.github.io/issues/1941
  • (MRB) Need review
    • https://github.com/conda-forge/conda-forge-repodata-patches-feedstock/pull/441
    • https://github.com/conda-forge/linux-sysroot-feedstock/pull/47
  • (MRB) Downloaded RPM need review
    • Directory level varies / need to confirm that is the right level
    • (MB) Do we need language packs?
      • (MRB) Have English in one
      • (MRB) Have one with many languages
      • (IF)
• (JK) Windows ARM
  • (SD) Hi :) Happy to answer questions
  • https://github.com/conda-forge/conda-forge.github.io/issues/1940
  • (IF) https://github.com/conda-forge/vc-feedstock/pull/55
  • (IF) Question for Steve: What do you plan on building in the first year?
    • (IF) Conda / Mamba / Boa needed to build, Installer?
    • (SD) Installer is ambitious (would be great! not required). Want attempts/CI issues visible
    • (SD) Challenges getting more hardware atm. So just be able to build
    • (IF) Python would be a goal? Maybe NumPy & SciPy?
    • (JK) What would be helpful for finance conversation?
      • (SD) Ask for less? ;) Though nothing has really been asked yet.
      • (SD) Finn can help :)
    • (IF) Can build zlib! 🎉
      • Local build
    • (MvN) Maybe macOS ARM list could be a starting point
    • (SD) Rust toolchain should work (testing with cryptography)
    • (IF) Does Clang cross-compilation work?
      • (SD) Using Cygwin (not Clang) atm
• (HV) Boost Harmonization
  • Now has PR: https://github.com/conda-forge/boost-feedstock/pull/164
  • Discussion yielded bikeshed à la: libboost, libboost-headers, libboost-python
• (MB) R 4.3 migration
  • https://github.com/conda-forge/conda-forge-pinning-feedstock/pull/4363
  • Any objections on kicking it off?
  • Windows TeX build issues for 4.1 might need to be resolved due to other non-R migrations?

Active votes

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Your new() agenda items

• (DPC) Package building tutorial at PyCon US 2023 was a success.
  • We had ~25 participants
  • Tutorial will be published online after some cleanup.
• (JRG) SDG for opt-in CI accepted (related to https://github.com/conda-forge/conda-forge.github.io/issues/1875 and GPU server)
• (WV) SDG for pubgrub on rattler accepted too
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Pushed to next meeting

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CFEPs

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