py-tfdlpack: add new package (#15583)

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

@@ -0,0 +1,45 @@
+# Copyright 2013-2020 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)
+
+
+class PyTfdlpack(CMakePackage):
+    """Tensorflow plugin for DLPack."""
+
+    homepage = "https://github.com/VoVAllen/tf-dlpack"
+    git      = "https://github.com/VoVAllen/tf-dlpack.git"
+
+    maintainers = ['adamjstewart']
+
+    version('master', branch='master', submodules=True)
+    version('0.1.1', tag='v0.1.1', submodules=True)
+
+    variant('cuda', default=True, description='Build with CUDA support')
+
+    depends_on('cmake@3.5:', type='build')
+    depends_on('cuda', when='+cuda')
+
+    # Python dependencies
+    extends('python')
+    depends_on('py-setuptools', type='build')
+    depends_on('py-tensorflow', type=('build', 'run'))
+
+    def cmake_args(self):
+        args = ['-DPYTHON_EXECUTABLE=' + self.spec['python'].command.path]
+
+        if '+cuda' in self.spec:
+            args.append('-DUSE_CUDA=ON')
+        else:
+            args.append('-DUSE_CUDA=OFF')
+
+        return args
+
+    def install(self, spec, prefix):
+        with working_dir('python'):
+            setup_py('install', '--prefix=' + prefix,
+                     '--single-version-externally-managed', '--root=/')
+
+    def setup_run_environment(self, env):
+        # Prevent TensorFlow from taking over the whole GPU
+        env.set('TF_FORCE_GPU_ALLOW_GROWTH', 'true')