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Better python resolution #16389

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102f8ea
better python resolution
TareHimself Dec 24, 2025
f5c06aa
lint
TareHimself Dec 24, 2025
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25 changes: 4 additions & 21 deletions tools/cmake/Utils.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -69,29 +69,12 @@ function(target_link_options_gc_sections target_name)
endif()
endfunction()

# Sets the value of the PYTHON_EXECUTABLE variable to 'python' if in an active
# (non-base) conda environment, and 'python3' otherwise. This maintains
# backwards compatibility for non-conda users and avoids conda users needing to
# explicitly set PYTHON_EXECUTABLE=python.
function(resolve_python_executable)
# Counter-intuitively, CONDA_DEFAULT_ENV contains the name of the active
# environment.
if(DEFINED ENV{CONDA_DEFAULT_ENV} AND NOT $ENV{CONDA_DEFAULT_ENV} STREQUAL
"base"
)
set(PYTHON_EXECUTABLE
python
PARENT_SCOPE
)
elseif(DEFINED ENV{VIRTUAL_ENV})
set(PYTHON_EXECUTABLE
$ENV{VIRTUAL_ENV}/bin/python3
PARENT_SCOPE
)
else()
if(NOT PYTHON_EXECUTABLE)
find_package(Python3 REQUIRED COMPONENTS Interpreter)
set(PYTHON_EXECUTABLE
python3
PARENT_SCOPE
${Python3_EXECUTABLE}
PARENT_SCOPE
)
endif()
endfunction()
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