pitrou commented on code in PR #45854:
URL: https://github.com/apache/arrow/pull/45854#discussion_r2021340400
##########
ci/scripts/python_build.sh:
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@@ -89,7 +136,37 @@ pushd ${python_build_dir}
# on Debian/Ubuntu (ARROW-15243).
# - Cannot use build isolation as we want to use specific dependency versions
# (e.g. Numpy, Pandas) on some CI jobs.
-${PYTHON:-python} -m pip install --no-deps --no-build-isolation -vv .
+
+# The conda compilers package may mess with C{XX}_FLAGS in a way that
interferes
+# with the compiler
Review Comment:
Well, using CMake two things would happen:
1. the build type (Debug/Release/RelWithDebInfo) selects appropriates
optimization and debug info
2. additionally, we have [our
own](https://github.com/apache/arrow/blob/main/cpp/cmake_modules/SetupCxxFlags.cmake)
flags definitions for warnings, optimizations and whatnot
If the Meson setup doesn't reproduce this, then it's a problem.
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