enable gpg-agent/dirmngr via systemd

Users who manage gpg-agent via their shell profiles probably want to set
gnupg.enable_agent to False.

group_vars/all

@@ -29,6 +29,9 @@ ssh:
     user_key: /root/id_rsa
     enable_sshd: False
 
+gnupg:
+    enable_agent: True
+
 mail:
     sync_tool: isync
     sync_pim: True

roles/gnupg/tasks/main.yml

@@ -1,3 +1,19 @@
 ---
 - name: Install gnupg
   pacman: name=gnupg state=present
+
+- name: Enable gpg-agent.socket
+  systemd: name=gpg-agent.socket user=yes enabled=yes state=started
+  become: yes
+  become_user: "{{ user.name }}"
+  environment:
+    XDG_RUNTIME_DIR: "/run/user/{{ user.uid }}"
+  when: gnupg.enable_agent == True
+
+- name: Enable dirmngr.socket
+  systemd: name=dirmngr.socket user=yes enabled=yes state=started
+  become: yes
+  become_user: "{{ user.name }}"
+  environment:
+    XDG_RUNTIME_DIR: "/run/user/{{ user.uid }}"
+  when: gnupg.enable_agent == True