do not use locales-all

defaults/main.yml

@@ -1,6 +1,4 @@
 ---
-timezone: UTC
-
 locales_default:
   lang: de_DE.UTF-8
   language: de

tasks/main.yml

@@ -1,9 +1,25 @@
 ---
-- name: uninstall locales
-  apt: pkg=locales state=absent
+- name: locales-all absent
+  apt:
+    pkg: locales-all
+    state: absent
 
-- name: install locales-all
-  apt: pkg=locales-all state=installed
+- debconf:
+    name: locales
+    question: locales/default_environment_locale
+    value: de_DE.UTF-8
+    vtype: select
 
-- name: template /etc/default/locale
+- debconf:
+    name: locales
+    question: locales/locales_to_be_generated
+    value: de_DE.UTF-8 UTF-8
+    vtype: multiselect
+
+- name: locales present
+  apt:
+    pkg: locales
+    state: present
+
+- name: default locale
   template: src=default_locale.j2 dest=/etc/default/locale