py-ocnn: new package (octree-based sparse CNN) (#37030)

O-CNN is an octree-based sparse convolutional neural network framework for 3D deep learning. It is built on py-torch.

var/spack/repos/builtin/packages/py-ocnn/package.py

@@ -0,0 +1,24 @@
+# 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 PyOcnn(PythonPackage):
+    """O-CNN is an octree-based sparse convolutional neural network
+    framework for 3D deep learning."""
+
+    homepage = "https://github.com/octree-nn/ocnn-pytorch"
+    pypi = "ocnn/ocnn-2.2.0.tar.gz"
+
+    maintainers("wdconinc")
+
+    version("2.2.0", sha256="5fb54305130921ece4cccf1697ec281f49d3e95837ba0e124cab9f8a567ecb80")
+
+    depends_on("python@3.6:", type=("build", "run"))
+    depends_on("py-setuptools", type="build")
+
+    depends_on("py-torch@1.6.0:", type=("build", "run"))
+    depends_on("py-numpy", type=("build", "run"))