dev call 20220407

Dev Call: 7 April 2022

Present

TBD

Agenda

• HPy release 0.0.4
• Autogen: separate API and ABI (context)

• HPy binary compatibility

  • Assuming that our ABI will always be backwards compatible is a bit naïve. We should start thinking about how to deal with that.
  • Inspired by SDL2 paper: https://www.reddit.com/r/linux_gaming/comments/1upn39/sdl2_adds_dynamic_api_magic_to_allow_updating_it/ (sorry, couldn't find the original paper)
  • We should think about a policy for supported HPy ABI versions

• Debug mode: The possibility to decide per module makes implementation complicated. Maybe a global decision would be enough (i.e. all contexts are debug contexts or none).
• HPyType_FromSpec: disallow setting any tp_flags not supported by HPy https://github.com/hpyproject/hpy/issues/305
• Remove support for Python 3.6 https://github.com/hpyproject/hpy/issues/307

• NumPy Progress and Plans

  • NpyIter
  • UFunc
  • [Wiki with migration notes](https://github.com/hpyproject/hpy/wiki/Numpy-HPy-migration-notes:-blockers-and-concerns)

• Open HPy PRs

  • Capsule PR: https://github.com/hpyproject/hpy/pull/308
  • exact type check: https://github.com/hpyproject/hpy/pull/309
  • detect HPy_Close/return of context constants in debug: https://github.com/hpyproject/hpy/pull/303