Set up scikit-build-core for the fortran extension module

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.17.2...3.26)
+project(${SKBUILD_PROJECT_NAME} LANGUAGES C Fortran)
+
+find_package(
+  Python
+  COMPONENTS Interpreter Development.Module NumPy
+  REQUIRED)
+
+# F2PY headers
+execute_process(
+  COMMAND "${PYTHON_EXECUTABLE}" -c
+          "import numpy.f2py; print(numpy.f2py.get_include())"
+  OUTPUT_VARIABLE F2PY_INCLUDE_DIR
+  OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+add_library(fortranobject OBJECT "${F2PY_INCLUDE_DIR}/fortranobject.c")
+target_link_libraries(fortranobject PUBLIC Python::NumPy)
+target_include_directories(fortranobject PUBLIC "${F2PY_INCLUDE_DIR}")
+set_property(TARGET fortranobject PROPERTY POSITION_INDEPENDENT_CODE ON)
+
+add_custom_command(
+  OUTPUT _auroramodule.c example-f2pywrappers.f
+  DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/aurora/main.f90"
+          "${CMAKE_CURRENT_SOURCE_DIR}/aurora/impden.f90"
+          "${CMAKE_CURRENT_SOURCE_DIR}/aurora/math.f90"
+          "${CMAKE_CURRENT_SOURCE_DIR}/aurora/grids.f90"
+  VERBATIM
+  COMMAND "${Python_EXECUTABLE}" -m numpy.f2py
+          "${CMAKE_CURRENT_SOURCE_DIR}/aurora/main.f90"
+          "${CMAKE_CURRENT_SOURCE_DIR}/aurora/impden.f90"
+          "${CMAKE_CURRENT_SOURCE_DIR}/aurora/math.f90"
+          "${CMAKE_CURRENT_SOURCE_DIR}/aurora/grids.f90"
+          -m _aurora --lower)
+
+python_add_library(_aurora MODULE "${CMAKE_CURRENT_BINARY_DIR}/_auroramodule.c"
+                   "${CMAKE_CURRENT_SOURCE_DIR}/aurora/main.f90"
+                   "${CMAKE_CURRENT_SOURCE_DIR}/aurora/impden.f90"
+                   "${CMAKE_CURRENT_SOURCE_DIR}/aurora/math.f90"
+                   "${CMAKE_CURRENT_SOURCE_DIR}/aurora/grids.f90"
+                   WITH_SOABI)
+target_link_libraries(_aurora PRIVATE fortranobject)
+
+install(TARGETS _aurora DESTINATION aurora/)

pyproject.toml

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+[project]
+name = "aurorafusion"
+dynamic = ["version"]
+description = "Aurora package for particle transport, radiation and neutrals in magnetically-confined plasmas"
+authors = [
+    { name = "F. Sciortino", email = "[email protected]" },
+]
+urls = { "Homepage" = "https://github.com/fsciortino/Aurora" }
+keywords = ["particle and impurity transport, neutrals, radiation, magnetic confinement fusion"]
+classifiers = [
+    "Programming Language :: Python :: 3",
+]
+dependencies = [
+    "matplotlib",
+    "numpy",
+    "omfit_classes",
+    "pandas",
+    "pexpect",
+    "requests",
+    "scipy",
+]
+
+[build-system]
+requires = ["scikit-build-core", "numpy"]
+build-backend = "scikit_build_core.build"
+
+[tool.scikit-build]
+ninja.minimum-version = "1.10"
+cmake.minimum-version = "3.17.2"
+wheel.packages = ["aurora"]
+
+[tool.scikit-build.metadata.version]
+provider = "scikit_build_core.metadata.regex"
+input = "aurora/__init__.py"