Fix CMAKE_PREFIX_PATH by using cmake.define in scikit-build-core

Author: jeongseok-meta

pyproject-pypi.toml.j2

@@ -93,6 +93,9 @@ cmake.args = [
     "-DMOMENTUM_USE_SYSTEM_PYBIND11=ON",
     "-DCMAKE_DISABLE_FIND_PACKAGE_Arrow=ON",
 ]
+# Read CMAKE_PREFIX_PATH from environment variable
+# This is needed for cibuildwheel where pixi installs deps to a custom location
+cmake.define.CMAKE_PREFIX_PATH = {env = "CMAKE_PREFIX_PATH"}
 minimum-version = "0.10"
 metadata.version.provider = "scikit_build_core.metadata.setuptools_scm"
 sdist.exclude = [
@@ -118,7 +121,7 @@ cmake.args = [
     "-DMOMENTUM_USE_SYSTEM_RERUN_CPP_SDK=OFF",
     "-DMOMENTUM_USE_SYSTEM_PYBIND11=ON",
 ]
-# CMAKE_PREFIX_PATH is set by cibuildwheel environment
+cmake.define.CMAKE_PREFIX_PATH = {env = "CMAKE_PREFIX_PATH"}
 
 [[tool.scikit-build.overrides]]
 if.platform-system = "^linux"
@@ -137,6 +140,7 @@ cmake.args = [
     "-DCMAKE_CXX_FLAGS=-static-libstdc++ -static-libgcc",
     "-DCMAKE_C_FLAGS=-static-libgcc",
 ]
+cmake.define.CMAKE_PREFIX_PATH = {env = "CMAKE_PREFIX_PATH"}
 {% endif %}
 
 {% if variant == "gpu" %}
@@ -156,6 +160,7 @@ cmake.args = [
     # from CMake's FindPython, but pixi's Python only has Interpreter component
     "-DMOMENTUM_USE_SYSTEM_PYBIND11=OFF",
 ]
+cmake.define.CMAKE_PREFIX_PATH = {env = "CMAKE_PREFIX_PATH"}
 {% endif %}
 
 [[tool.scikit-build.overrides]]
@@ -174,6 +179,7 @@ cmake.args = [
     "-DCMAKE_CXX_SCAN_FOR_MODULES=OFF",
 {% endif %}
 ]
+cmake.define.CMAKE_PREFIX_PATH = {env = "CMAKE_PREFIX_PATH"}
 
 [tool.setuptools_scm]
 # Automatically determine version from git tags
@@ -261,9 +267,9 @@ before-build = """
 pip install scikit-build-core pybind11 setuptools-scm
 pip install "torch>=2.8.0,<2.9" --index-url https://download.pytorch.org/whl/cpu
 """
-# Pass CMAKE_PREFIX_PATH via both environment and cmake.define
+# Pass CMAKE_PREFIX_PATH via environment and CMAKE_ARGS for scikit-build-core
 # The {project} placeholder is expanded by cibuildwheel
-environment = { CMAKE_PREFIX_PATH = "{project}/.pixi/envs/default", MOMENTUM_BUILD_WITH_FBXSDK = "OFF", SKBUILD_CMAKE_DEFINE = "CMAKE_PREFIX_PATH={project}/.pixi/envs/default" }
+environment = { CMAKE_PREFIX_PATH = "{project}/.pixi/envs/default", MOMENTUM_BUILD_WITH_FBXSDK = "OFF" }
 
 [tool.cibuildwheel.windows]
 # Disable build isolation to ensure CMAKE_PREFIX_PATH is properly passed to CMake
@@ -273,7 +279,7 @@ before-build = """
 pip install scikit-build-core pybind11 setuptools-scm
 pip install "torch>=2.8.0,<2.9" --index-url https://download.pytorch.org/whl/cpu
 """
-# Pass CMAKE_PREFIX_PATH via both environment and cmake.define
+# Pass CMAKE_PREFIX_PATH via environment and CMAKE_ARGS for scikit-build-core
 # The {project} placeholder is expanded by cibuildwheel
-environment = { CMAKE_PREFIX_PATH = "{project}/.pixi/envs/default", MOMENTUM_BUILD_WITH_FBXSDK = "OFF", SKBUILD_CMAKE_DEFINE = "CMAKE_PREFIX_PATH={project}/.pixi/envs/default" }
+environment = { CMAKE_PREFIX_PATH = "{project}/.pixi/envs/default", MOMENTUM_BUILD_WITH_FBXSDK = "OFF" }
 {% endif %}