Install MPI, and add MPI as a dependency as it is required by the tests.

Author: mvousden

roles/nmag/tasks/compile_nmag.yml

@@ -26,3 +26,21 @@
 - name: Set executable permissions for everyone on files which are executable for user
   command: find {{ NMAG_INSTALL_PREFIX }}/{{ NMAG_EXTRACTED_DIR.stdout }} -perm /u+x -exec chmod go+x {} \;
   sudo: yes
+
+# In order to use Nmag with MPI, a file must be present in all users' home
+# directories.
+
+- name: Create mpd files for MPI execution.
+  lineinfile:
+    create: yes
+    dest: "{{ item.dest }}"
+    line: "MPD_SECRETWORD=generic-secr3t"
+    mode: 0600
+    regexp: "MPD_SECRETWORD=generic-secr3t"
+    owner: "{{ item.owner }}"
+    state: present
+  sudo: yes
+  with_items:
+    - { dest: /etc/mpd.conf, owner: root }
+    - { dest: /home/vagrant/.mpd.conf, owner: vagrant }
+    - { dest: /etc/skel/.mpd.conf, owner: root }

roles/nmag/tasks/install_required_debian_packages.yml

@@ -7,12 +7,13 @@
   with_items:
     - dpkg-dev
     - g++
+    - gawk
     - libblas-dev
+    - liblapack-dev
     - libreadline-dev
-    - make
     - m4
-    - gawk
-    - zlib1g-dev
+    - make
+    - mpich
     - readline-common
-    - liblapack-dev
+    - zlib1g-dev
   sudo: yes