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diff --git a/var/spack/repos/builtin/packages/py-networkit/package.py b/var/spack/repos/builtin/packages/py-networkit/package.py
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+# Copyright 2013-2019 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 import *
+
+
+class PyNetworkit(PythonPackage):
+    """NetworKit is a growing open-source toolkit for large-scale network
+       analysis. Its aim is to provide tools for the analysis of large networks
+       in the size range from thousands to billions of edges. For this purpose,
+       it implements efficient graph algorithms, many of them parallel to
+       utilize multicore architectures. These are meant to compute standard
+       measures of network analysis, such as degree sequences, clustering
+       coefficients, and centrality measures. In this respect, NetworKit is
+       comparable to packages such as NetworkX, albeit with a focus on
+       parallelism and scalability."""
+
+    homepage = "https://networkit.github.io/"
+    url      = "https://pypi.io/packages/source/n/networkit/networkit-6.1.tar.gz"
+
+    version('7.0', sha256='eea4b5e565d6990b674e1c7f4d598be9377d57b61d0d82883ecc39edabaf3631')
+    version('6.1', sha256='f7fcb50dec66a8253f85c10ff9314100de013c7578d531c81d3f71bc6cf8f093')
+
+    # Required dependencies
+    depends_on('cmake', type='build')
+    depends_on('libnetworkit@7.0', type=('build', 'link'), when='@7.0')
+    depends_on('libnetworkit@6.1', type=('build', 'link'), when='@6.1')
+    depends_on('llvm-openmp', when='%apple-clang')
+    depends_on('ninja', type='build')
+    depends_on('py-cython', type='build')
+    depends_on('py-numpy', type=('build', 'run'))
+    depends_on('py-scipy', type=('build', 'run'))
+    depends_on('py-setuptools', type='build')
+
+    phases = ['build_ext', 'install']
+
+    # Overwrite build_ext to enable ext. core-library + parallel build
+    def build_ext_args(self, spec, prefix):
+        args = ['--networkit-external-core', '-j{0}'.format(make_jobs)]
+        return args