Add py-pyinstrument package (#14241)

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

+# 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 PyPyinstrument(PythonPackage):
+    """Call stack profiler for Python. Shows you why your code is slow!"""
+
+    homepage = "https://github.com/joerick/pyinstrument"
+    url      = "https://github.com/joerick/pyinstrument/archive/v3.1.0.tar.gz"
+
+    version('3.1.0', sha256='02319607daf65110e246085f5e2ee111f565f213eed1991229f2d58e9a7657a5')
+
+    depends_on('py-setuptools', type='build')
+    depends_on('py-pytest-runner', type='build')
+    depends_on('npm', type='build')
+    depends_on('py-pyinstrument-cext@0.2.2:', type=('build', 'run'))
+    depends_on('py-pytest', type='test')