Replace setup.py with pyproject.toml

CMakeLists.txt

@@ -47,6 +47,7 @@ option(USE_NVTX "Build with cuda profiling annotations. Developers only." OFF)
 set(NVTX_HEADER_DIR "" CACHE PATH "Path to the stand-alone nvtx header")
 option(RABIT_MOCK "Build rabit with mock" OFF)
 option(HIDE_CXX_SYMBOLS "Build shared library and hide all C++ symbols" OFF)
+option(KEEP_BUILD_ARTIFACTS_IN_BINARY_DIR "Output build artifacts in CMake binary dir" OFF)
 ## CUDA
 option(USE_CUDA  "Build with GPU acceleration" OFF)
 option(USE_NCCL  "Build with NCCL to enable distributed GPU support." OFF)
@@ -268,8 +269,13 @@ if (JVM_BINDINGS)
   xgboost_target_defs(xgboost4j)
 endif (JVM_BINDINGS)
 
-set_output_directory(runxgboost ${xgboost_SOURCE_DIR})
-set_output_directory(xgboost ${xgboost_SOURCE_DIR}/lib)
+if (KEEP_BUILD_ARTIFACTS_IN_BINARY_DIR)
+  set_output_directory(runxgboost ${xgboost_BINARY_DIR})
+  set_output_directory(xgboost ${xgboost_BINARY_DIR}/lib)
+else ()
+  set_output_directory(runxgboost ${xgboost_SOURCE_DIR})
+  set_output_directory(xgboost ${xgboost_SOURCE_DIR}/lib)
+endif ()
 # Ensure these two targets do not build simultaneously, as they produce outputs with conflicting names
 add_dependencies(xgboost runxgboost)
 

python-package/pyproject.toml

@@ -0,0 +1,38 @@
+[build-system]
+requires = ["packaging"]
+backend-path = ["xgboost"]
+build-backend = "packager.pep517"
+
+[project]
+name = "xgboost"
+version = "2.0.0-dev0"
+authors = [
+    {name = "Hyunsu Cho", email = "[email protected]"},
+    {name = "Jiaming Yuan", email = "[email protected]"}
+]
+description = "XGBoost Python Package"
+readme = {file = "README.rst", content-type = "text/x-rst"}
+requires-python = ">=3.8"
+license = {text = "Apache-2.0"}
+classifiers = [
+    "License :: OSI Approved :: Apache Software License",
+    "Development Status :: 5 - Production/Stable",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10"
+]
+dependencies = [
+    "numpy",
+    "scipy"
+]
+
+[project.optional-dependencies]
+pandas = ["pandas"]
+scikit-learn = ["scikit-learn"]
+dask = ["dask", "pandas", "distributed"]
+datatable = ["datatable"]
+plotting = ["graphviz", "matplotlib"]
+pyspark = ["pyspark", "scikit-learn", "cloudpickle"]