Installing from stretch-backports.

hosts

@@ -43,4 +43,4 @@
 #db-[99:101]-node.example.com
 
 # Host from my ~/.ssh/config
-root@172.20.8.200
+root@172.20.8.240

lava.yml

@@ -1,15 +1,15 @@
 - hosts: all
   tasks:
-  - name: Install dependencies
+  - name: Add stretch-backports to apt sources list
+    apt_repository:
+      repo: "deb http://ftp.debian.org/debian stretch-backports main"
+  - name: Install lava-server from backports
     apt:
-      name:
-      - postgresql
-      - lava-server
-      - apache2
+      name: lava-server
       state: present
+      default_release: stretch-backports
       update_cache: yes
       cache_valid_time: 3600
-    notify: reload apache
   - name: Disable default site
     shell: a2dissite 000-default
     args:
@@ -23,8 +23,8 @@
       creates: /etc/apache2/sites-enabled/lava-server.conf
     notify: reload apache
   - name: Create root account
-    shell: lava-server manage createsuperuser --username root --email root@example.com --noinput
-  - name: Set temporary password
+    shell: lava-server manage createsuperuser --username root --noinput
+  - name: Set default password
     expect:
       command: lava-server manage changepassword root
       responses: