Add py-vermin package (#14631)

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

@@ -0,0 +1,23 @@
+# 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)
+
+from spack import *
+
+
+class PyVermin(PythonPackage):
+    """Concurrently detect the minimum Python versions needed to run code."""
+
+    homepage = "https://github.com/netromdk/vermin"
+    url      = "https://github.com/netromdk/vermin/archive/v0.10.0.tar.gz"
+
+    import_modules = ['vermin']
+
+    version('0.10.0', sha256='3458a4d084bba5c95fd7208888aaf0e324a07ee092786ee4e5529f539ab4951f')
+
+    depends_on('python@2.7:', type=('build', 'run'))
+    depends_on('py-setuptools', type=('build', 'run'))
+
+    def test(self):
+        make('test')