Re: [I] [Python] Support building libarrow (C++) automatically as part of the Python package [arrow]

["mgorny (via GitHub)" <gi...@apache.org>]

mgorny commented on issue #45576:
URL: https://github.com/apache/arrow/issues/45576#issuecomment-2668952723

   I explored two options so far:
   
   1. Using `ExternalProject` in CMake — it doesn't seem feasible since the C++ build isn't configured before the build step, and I don't see any way of replacing `find_package(Arrow)` that wouldn't add a significant maintenance burden.
   2. Using `add_subdirectory` in CMake — in my opinion it would require intrusive changes to libarrow build, and future care to make sure both build systems stay reasonably in sync.
   
   I'm going to explore doing from `setup.py` next.


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