Refactor installation of cpp_hf extension to top-level site-packages and remove obsolete package facade

Author: skilledwolf

CMakeLists.txt

@@ -182,6 +182,5 @@ target_link_libraries(cpp_hf PRIVATE Eigen3::Eigen Boost::headers ${HF_OPENMP_LI
 
 # Install the binary into the python package so the wheel includes it
 # (place the extension inside the 'cpp_hf' package directory)
-install(TARGETS cpp_hf
-  LIBRARY DESTINATION "${SKBUILD_PLATLIB_DIR}/cpp_hf"
-)
+# Install the binary extension at the top level of site-packages
+install(TARGETS cpp_hf DESTINATION "${SKBUILD_PLATLIB_DIR}")

cpp_hf/__init__.py

@@ -26,8 +26,8 @@ classifiers = [
 Homepage = "https://github.com/skilledwolf/cpp_hf"
 Issues   = "https://github.com/skilledwolf/cpp_hf/issues"
 
-[tool.scikit-build]
-wheel.packages = ["cpp_hf"]  # if you ship a pure Python package dir; okay if absent
+#[tool.scikit-build]
+# No pure-Python packages shipped; wheel only contains the extension module
 
 [tool.scikit-build.cmake.define]
 HF_USE_OPENMP = true