Switch to scikit-build-core

build.sh

@@ -280,13 +280,15 @@ fi
 
 # Build and (optionally) install the cuml Python package
 if (! hasArg --configure-only) && (completeBuild || hasArg cuml || hasArg pydocs); then
+    # Replace spaces with semicolons in SKBUILD_EXTRA_CMAKE_ARGS
+    SKBUILD_EXTRA_CMAKE_ARGS=$(echo ${SKBUILD_EXTRA_CMAKE_ARGS} | sed 's/ /;/g')
+
     # Append `-DFIND_CUML_CPP=ON` to CUML_EXTRA_CMAKE_ARGS unless a user specified the option.
-    SKBUILD_EXTRA_CMAKE_ARGS="${CUML_EXTRA_CMAKE_ARGS}"
-    if [[ "${CUML_EXTRA_CMAKE_ARGS}" != *"DFIND_CUML_CPP"* ]]; then
-        SKBUILD_EXTRA_CMAKE_ARGS="${SKBUILD_EXTRA_CMAKE_ARGS} -DFIND_CUML_CPP=ON"
+    if [[ "${SKBUILD_EXTRA_CMAKE_ARGS}" != *"DFIND_CUML_CPP"* ]]; then
+        SKBUILD_EXTRA_CMAKE_ARGS="${SKBUILD_EXTRA_CMAKE_ARGS};-DFIND_CUML_CPP=ON"
     fi
 
-    SKBUILD_CONFIGURE_OPTIONS="-DCMAKE_MESSAGE_LOG_LEVEL=${CMAKE_LOG_LEVEL} ${SKBUILD_EXTRA_CMAKE_ARGS}" \
+    SKBUILD_CMAKE_ARGS="-DCMAKE_MESSAGE_LOG_LEVEL=${CMAKE_LOG_LEVEL};${SKBUILD_EXTRA_CMAKE_ARGS}" \
         SKBUILD_BUILD_OPTIONS="-j${PARALLEL_LEVEL}" \
         python -m pip install --no-build-isolation --no-deps ${REPODIR}/python
 
@@ -297,7 +299,6 @@ if (! hasArg --configure-only) && (completeBuild || hasArg cuml || hasArg pydocs
 fi
 
 if hasArg cuml-cpu; then
-    SKBUILD_CONFIGURE_OPTIONS="-DCUML_CPU=ON -DCMAKE_MESSAGE_LOG_LEVEL=VERBOSE" \
-        SKBUILD_BUILD_OPTIONS="-j${PARALLEL_LEVEL}" \
+    SKBUILD_CMAKE_ARGS="-DCUML_CPU=ON;-DCMAKE_MESSAGE_LOG_LEVEL=VERBOSE" \
         python -m pip install --no-build-isolation --no-deps -v ${REPODIR}/python
 fi

ci/build_wheel.sh

@@ -49,7 +49,7 @@ fi
 
 cd ${package_dir}
 
-SKBUILD_CONFIGURE_OPTIONS="-DDETECT_CONDA_ENV=OFF -DDISABLE_DEPRECATION_WARNINGS=ON -DCPM_cumlprims_mg_SOURCE=${GITHUB_WORKSPACE}/cumlprims_mg/" \
+SKBUILD_CMAKE_ARGS="-DDETECT_CONDA_ENV=OFF;-DDISABLE_DEPRECATION_WARNINGS=ON;-DCPM_cumlprims_mg_SOURCE=${GITHUB_WORKSPACE}/cumlprims_mg/" \
   python -m pip wheel . \
     -w dist \
     -vvv \

conda/environments/all_cuda-118_arch-x86_64.yaml

@@ -63,7 +63,7 @@ dependencies:
 - rapids-dask-dependency==24.2.*
 - recommonmark
 - rmm==24.2.*
-- scikit-build>=0.13.1
+- scikit-build-core>=0.7.0
 - scikit-learn==1.2
 - scipy>=1.8.0
 - seaborn

conda/environments/all_cuda-120_arch-x86_64.yaml

@@ -59,7 +59,7 @@ dependencies:
 - rapids-dask-dependency==24.2.*
 - recommonmark
 - rmm==24.2.*
-- scikit-build>=0.13.1
+- scikit-build-core>=0.7.0
 - scikit-learn==1.2
 - scipy>=1.8.0
 - seaborn

conda/recipes/cuml-cpu/meta.yaml

@@ -29,7 +29,7 @@ requirements:
   host:
     - python x.x
     - setuptools
-    - scikit-build>=0.13.1
+    - scikit-build-core >=0.7.0
     - cython>=3.0.0
   run:
     - python x.x

conda/recipes/cuml/meta.yaml

@@ -65,7 +65,7 @@ requirements:
     - pylibraft ={{ minor_version }}
     - python x.x
     - raft-dask ={{ minor_version }}
-    - scikit-build >=0.13.1
+    - scikit-build-core >=0.7.0
     - setuptools
     - treelite {{ treelite_version }}
   run:

dependencies.yaml

@@ -151,13 +151,13 @@ dependencies:
     common:
       - output_types: [conda, requirements, pyproject]
         packages:
-          - scikit-build>=0.13.1
           - cython>=3.0.0
           - &treelite treelite==3.9.1
       - output_types: conda
         packages:
           - &pylibraft_conda pylibraft==24.2.*
           - &rmm_conda rmm==24.2.*
+          - scikit-build-core>=0.7.0
       - output_types: requirements
         packages:
           # pip recognizes the index as a global option for the requirements.txt file
@@ -166,8 +166,7 @@ dependencies:
           - --extra-index-url=https://pypi.anaconda.org/rapidsai-wheels-nightly/simple
       - output_types: [pyproject, requirements]
         packages:
-          - wheel
-          - setuptools
+          - scikit-build-core[pyproject]>=0.7.0
           - &treelite_runtime treelite_runtime==3.9.1
     specific:
       - output_types: [conda, requirements, pyproject]

python/CMakeLists.txt

@@ -19,7 +19,7 @@ include(../fetch_rapids.cmake)
 set(CUML_VERSION 24.02.00)
 
 option(CUML_CPU "Build only cuML CPU Python components." OFF)
-set(language_list "C;CXX")
+set(language_list "CXX")
 
 if(NOT CUML_CPU)
   # We always need CUDA for cuML GPU because the raft dependency brings in a
@@ -32,11 +32,7 @@ endif()
 project(
   cuml-python
   VERSION ${CUML_VERSION}
-  LANGUAGES # TODO: Building Python extension modules via the python_extension_module requires the C
-            # language to be enabled here. The test project that is built in scikit-build to verify
-            # various linking options for the python library is hardcoded to build with C, so until
-            # that is fixed we need to keep C.
-            ${language_list}
+  LANGUAGES ${language_list}
 )
 
 ################################################################################
@@ -75,7 +71,7 @@ else()
   set(cuml_FOUND OFF)
 endif()
 
-include(rapids-cython)
+include(rapids-cython-core)
 
 set(CUML_PYTHON_TREELITE_TARGET treelite::treelite)
 

python/pyproject.toml

@@ -20,13 +20,11 @@ requires = [
     "ninja",
     "pylibraft==24.2.*",
     "rmm==24.2.*",
-    "scikit-build>=0.13.1",
-    "setuptools",
+    "scikit-build-core[pyproject]>=0.7.0",
     "treelite==3.9.1",
     "treelite_runtime==3.9.1",
-    "wheel",
 ] # This list was generated by `rapids-dependency-file-generator`. To make changes, edit ../dependencies.yaml and run `rapids-dependency-file-generator`.
-build-backend = "setuptools.build_meta"
+build-backend = "scikit_build_core.build"
 
 [tool.pytest.ini_options]
 markers = [
@@ -102,12 +100,6 @@ test = [
 Homepage = "https://github.com/rapidsai/cuml"
 Documentation = "https://docs.rapids.ai/api/cuml/stable/"
 
-[tool.setuptools]
-license-files = ["LICENSE"]
-
-[tool.setuptools.dynamic]
-version = {file = "cuml/VERSION"}
-
 [tool.black]
 line-length = 79
 target-version = ["py39"]
@@ -131,3 +123,16 @@ versioneer\.py |
     thirdparty
 )/
 '''
+
+[tool.scikit-build]
+cmake.minimum-version = "3.26.4"
+ninja.make-fallback = true
+cmake.build-type = "Release"
+sdist.reproducible = true
+wheel.packages = ["cuml"]
+build-dir = "build/{wheel_tag}"
+
+[tool.scikit-build.metadata.version]
+provider = "scikit_build_core.metadata.regex"
+input = "cuml/VERSION"
+regex = "(?P<value>.*)"