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cmake python refactor integration branch#1533

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cyrush wants to merge 9 commits intodevelopfrom
task/2026_03_py_cmake_refactor_integration_branch
Open

cmake python refactor integration branch#1533
cyrush wants to merge 9 commits intodevelopfrom
task/2026_03_py_cmake_refactor_integration_branch

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@cyrush cyrush commented Mar 6, 2026

integration branch for next steps from #1521

mathstuf and others added 8 commits February 28, 2026 00:19
@mathstuf
cmake: remove unnecessary policy setting
07fef27 
CMP0074 is `NEW` as of 3.12, so the minimum of 3.21 already sets it to
`NEW`.
@mathstuf
cmake: use the new Python find module mechanisms
6c96300 
Also switch to using `Python3_FOUND` as the configure exits if this is
set and Python is not found.
@mathstuf
python: name modules according to the SOABI
9ee1bc6
@mathstuf
cmake: use USE_SABI argument for stable ABI
6804e52
@mathstuf
cmake: remove empty conduit_python_build target
165cb8a 
Everything is handled by the FindPython3 APIs now.
@mathstuf
ConduitConfig: provide a Python component
ebfddb9 
This lets users request `find_package(Conduit COMPONENT Python)` to
ensure that Python is available.
@cyrush
Merge pull request #1521 from mathstuf/find-python-dep
dc75042 
Merge find python dep into integration branch
@cyrush
cmake python find integration updates
a1e695c
@cyrush cyrush changed the title cmake refactor integration branch cmake python refactor integration branch Mar 6, 2026
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cyrush commented Mar 6, 2026 •
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For the windows cases, it seems python's might be getting crossed:

CI Python Env Setup:

Run python3 -m pip install --upgrade pip numpy mpi4py wheel setuptools
Requirement already satisfied: pip in C:\hostedtoolcache\windows\Python\3.12.10\x64\Lib\site-packages (26.0.1)

Later, find_package(Python3):

 CMake Error at C:/Program Files/CMake/share/cmake-3.31/Modules/FindPackageHandleStandardArgs.cmake:233 (message):
  Could NOT find Python3 (missing: Python3_NumPy_INCLUDE_DIRS NumPy) (found
  version "3.14.3")
Call Stack (most recent ca

This hints at a python 3.12 install and a python 3.14 install

We are not specifying python - both should be looking for python3 in the env.

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@cyrush @mathstuf