2026-07-08 Conda Ecosystem Meeting

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

Attendees

JS: conda-skeleton deprecation (https://github.com/conda/conda-build/pull/6023)
- rattler-build R recipe generation improvements: https://github.com/prefix-dev/rattler-build/issues/2563
- The rattler-build playground can now even generate recipes online using WASM! https://playground.rattler.build/

(JRG) Please check CEP amendments by Wolf: CEP 44 https://github.com/conda/ceps/pull/177, CEP 14 https://github.com/conda/ceps/pull/176.
(DJC) __cuda_arch progress update
- Two Issues:
  - 1. How to handle package managers that don't implement __cuda_arch?
  - 1. How to handle package managers which ignore run_constraints on virtual packages?
- Same solution for both. cuda-arch assumes system has lowest supported arch; otherwise __cuda_arch is required.
  - i.e. Users will get code compatible with 5.0/7.5 unless their package manager implements __cuda_arch
  - Bug fixes for ignored run_constraints still required for correct cuda-version selection
  - https://github.com/conda-forge/cuda-arch-feedstock/pull/1
  - https://github.com/conda-forge/conda-forge-ci-setup-feedstock/pull/420
(JK) py-rattler pin in conda-build, conda-smithy, and elsewhere. How could we handle this better?
- (WV) Type checking could help catch issues and then we could use dependabot
- (DJC) Would semver be an option?
  - (WV) Maybe we could do 1.0 post SciPy. Need to check with team.
- (WV) Type checking would still be useful though