[molflow] Add openmpi dependency.

repos/vae/packages/molflow/package.py

@@ -10,14 +10,14 @@ class Molflow(CMakePackage):
     """A Monte-Carlo Simulator package developed at CERN"""
 
     homepage = "https://molflow.web.cern.ch/"
-    url      = "https://gitlab.cern.ch/molflow_synrad/molflow/-/archive/v2.9.4_beta/molflow-v2.9.4_beta.tar.gz"
     git      = "https://gitlab.cern.ch/molflow_synrad/molflow.git/"
     maintainers = ['ChristianTackeGSI']
 
-    version('2.9.4_beta', sha256='876ec0d1118e8c34c6b60cf071a2eef3bce90d2b4ba1e2b777aea0de3cae9b35')
+    version('2.9.4_beta', commit='426e6ccc239a82cbd8a14f18be15cbbf07bd7e74', submodules=True, no_cache=True)
     version('2.9.3_beta', commit='26599088db87ddda2e3d1c5f6f9f2f93907873b9', submodules=True, no_cache=True)
 
     depends_on('cmake@3.12.2:', type='build')
+    depends_on('openmpi')
 
     def cmake_args(self):
         return [