pest suit + (#19458)

* pestpp +

* build -f default

var/spack/repos/builtin/packages/pestpp/package.py

@@ -0,0 +1,27 @@
+# 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 Pestpp(CMakePackage):
+    """PEST++ is a software suite aimed at supporting complex numerical
+    models in the decision-support context. Much focus has been devoted to
+    supporting environmental models (groundwater, surface water, etc) but
+    these tools are readily applicable to any computer model.
+    """
+
+    homepage = "https://pesthomepage.org"
+    url      = "https://github.com/usgs/pestpp/archive/5.0.5.tar.gz"
+
+    version('5.0.5', sha256='b9695724758f69c1199371608b01419973bd1475b1788039a2fab6313f6ed67c')
+
+    variant('mpi', default=True, description='Enable MPI support')
+
+    depends_on('cmake@3.9:', type='build')
+    depends_on('mpi', type=('build', 'run'), when='+mpi')
+
+    def install(self, spec, prefix):
+        install_tree('bin', prefix.bin)