scikit-build Developer Meeting #12b Notes 2023-11-03

[thewtex]

Agenda

• Henry Slides

Attending

• Matt McCormick
• Henry Scheiner
• Jean-Christophe Fillion-Robin

Discussion

• https://gregoryszorc.com/blog/2023/10/30/my-user-experience-porting-off-setup.py/
• cython sample in progress
  • based on https://scikit-build-core.readthedocs.io/en/latest/getting_started.html
• Docs intro
  • explicitly state that scikit-build is not just for scientific packages.
• --no-isolation -> do not delete temporary directory
  • set tool.scikit-build.build-dir to a local directory

Slides review notes

• Overrides discussion
• How to specify conditions?
  • OR vs AND, AND is default, be able to specify all the conditions that are either all OR or all AND
  • if.any, if.all
  • if.env = "(BUILD_ME OR CIBUILDWHEEL)"
  • if.env="and(BUILD_ME , CIBUILDWHEEL)"
  • While we want to make sure remain declarative and constrained and well specified
  • GitHub, but YAML vs TOML: https://docs.github.com/en/actions/learn-github-actions/expressions#functions
  • if.any.env = {CIBUILDWHEEL = "1", CONDA_BUILD = "1", PIWHEELS_BUILD = "1"}
• Conditions with config options
  • tool.scikit-build.opt
  • -Copt.build = true or SKBUILD_OPT_BUILD="true" (env or CMake(?) variable)
    • allow SKBUILD_<project_name>_ ?
    • shortcut with -Cbuild=true ?
      • Possible conflicts with skbuild configuration
        • Ask user to use -Copt.build=true ?
          • Problem: if we add an option, this may suddenly change
        • Take users over ours
          • Problem: Ours are not namespaced
          • Solution: Allow access to ours via namespace? skbuild.build=true, reserve skbuild
  • opt: dict[str, bool | str, | int | list[bool | str | int]]
  • Design to allows specification of
    1. value
    2. type
    3. help description
  • But shortcut just to values
• cli in progress

Related tools:

• Other pep 517 backend integrating with CMake. See https://pypi.org/project/cmeel/, https://github.com/cmake-wheel/cmeel
• https://github.com/cmaker-dev/cmaker