add pmi support and process managers to the MPIs

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

@@ -43,6 +43,8 @@ class Mpich(Package):
     version('3.0.4', '9c5d5d4fe1e17dd12153f40bc5b6dbc0')
 
     variant('verbs', default=False, description='Build support for OpenFabrics verbs.')
+    variant('pmi', default=True, description='Build with PMI support')
+    variant('hydra', default=True, description='Build the hydra process manager')
 
     provides('mpi@:3.0', when='@3:')
     provides('mpi@:1.3', when='@1:')
@@ -62,6 +64,8 @@ def setup_dependent_package(self, module, dep_spec):
 
     def install(self, spec, prefix):
         config_args = ["--prefix=" + prefix,
+                       "--with-pmi=" + ("yes" if '+pmi' in spec else 'no'),
+                       "--with-pm=" + ('hydra' if '+hydra' in spec else 'no'),
                        "--enable-shared"]
 
         # Variants