# scikit-build Developer Meeting Notes 2023-11-03 #9

## Agenda

- [Henry Slides](https://docs.google.com/presentation/d/1TXpu7GagBkC5AJUcJHbzV32XghRQgOET_YwWaxdbwgE/edit#slide=id.p)

## 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>_<options> ?
- 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