nvtx: add new package (#38430)

Co-authored-by: thomas-bouvier <thomas-bouvier@users.noreply.github.com>

var/spack/repos/builtin/packages/nvtx/nvtx-config.patch

@@ -0,0 +1,10 @@
+diff --git a/nvtx-config.cmake b/nvtx-config.cmake
+new file mode 100644
+index 0000000000..bcad258624
+--- /dev/null
++++ b/nvtx-config.cmake
+@@ -0,0 +1,4 @@
++include("${CMAKE_CURRENT_LIST_DIR}/nvtxImportedTargets.cmake")
++set(${CMAKE_FIND_PACKAGE_NAME}_CONFIG "${CMAKE_CURRENT_LIST_FILE}")
++include(FindPackageHandleStandardArgs)
++find_package_handle_standard_args(${CMAKE_FIND_PACKAGE_NAME} CONFIG_MODE)

var/spack/repos/builtin/packages/nvtx/package.py

@@ -0,0 +1,49 @@
+# Copyright 2013-2023 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class Nvtx(Package, PythonExtension):
+    """Python code annotation library"""
+
+    git = "https://github.com/NVIDIA/NVTX.git"
+    url = "https://github.com/NVIDIA/NVTX/archive/refs/tags/v3.1.0.tar.gz"
+
+    maintainers("thomas-bouvier")
+
+    version("develop", branch="dev")
+    version("3.1.0", sha256="dc4e4a227d04d3da46ad920dfee5f7599ac8d6b2ee1809c9067110fb1cc71ced")
+
+    variant("python", default=True, description="Install Python bindings.")
+    extends("python", when="+python")
+    depends_on("py-pip", type="build", when="+python")
+    depends_on("py-setuptools", type="build", when="+python")
+    depends_on("py-wheel", type="build", when="+python")
+    depends_on("py-cython", type="build", when="+python")
+
+    build_directory = "python"
+
+    # Create a nvtx-config.cmake file to make calls to find_package(nvtx) to
+    # work as expected
+    patch("nvtx-config.patch")
+
+    def patch(self):
+        """Patch setup.py to provide include directory."""
+        include_dir = prefix.include
+        setup = FileFilter("python/setup.py")
+        setup.filter("include_dirs=include_dirs", f"include_dirs=['{include_dir}']", string=True)
+
+    def install(self, spec, prefix):
+        install_tree("c/include", prefix.include)
+        install("c/CMakeLists.txt", prefix)
+        install("c/nvtxImportedTargets.cmake", prefix)
+        install("./LICENSE.txt", prefix)
+
+        install("./nvtx-config.cmake", prefix)  # added by the patch above
+
+        args = std_pip_args + ["--prefix=" + prefix, "."]
+        with working_dir(self.build_directory):
+            pip(*args)