use fish as default shell

defaults/main.yml

@@ -1,5 +1,9 @@
-root_user_aliases:
+root_ssh_key: false
+
+root_shell_aliases:
   - name: aptitude-list-manually-installed
+    description: list all manually installed packages without system packages
     command: aptitude search '!?priority(required) !?priority(important) ?installed !?automatic'
   - name: apt-tail-log
+    description: tail the apt log
     command: tail -f /var/log/apt/term.log

tasks/main.yml

@@ -1,6 +1,39 @@
 ---
 
-- name: root bashrc
+- name: fish package
+  package:
+    name: fish
+
+- name: fish config directory
+  file:
+    path: /root/.config/fish/conf.d/
+    state: directory
+
+- name: fish config files
   template:
-    src: bashrc.j2
-    dest: /root/.bashrc
+    src: "{{ item }}.fish.j2"
+    dest: /root/.config/fish/conf.d/{{ item }}.fish
+  with_items:
+    - root-shell-aliases
+
+- name: fish shell
+  user:
+    name: root
+    shell: /usr/bin/fish
+
+- name: ssh key
+  user:
+    name: root
+    generate_ssh_key: yes
+    ssh_key_type: ed25519
+  when: root_ssh_key
+
+- name: password
+  user:
+    name: root
+    password: "{{ root_password }}"
+  when: root_password is defined
+
+- file:
+   path: /root/.config/fish/conf.d/title.fish
+   state: absent

templates/bashrc.j2

@@ -1,11 +0,0 @@
-# ~/.bashrc: executed by bash(1) for non-login shells.
-
-{{ ansible_managed | comment }}
-
-{% for alias in root_user_aliases %}
-alias {{alias.name}}="{{alias.command}}"
-{% endfor %}
-
-HISTFILE=/root/.history
-shopt -s histappend # append to history, don't overwrite it
-export PROMPT_COMMAND="history -a; history -c; history -r; $PROMPT_COMMAND"

templates/root-shell-aliases.fish.j2

@@ -0,0 +1,7 @@
+{{ ansible_managed | comment }}
+
+{% for alias in root_shell_aliases %}
+function {{ alias.name }} --description {{ alias.description  | quote }}
+  {{alias.command}} $argv
+end
+{% endfor %}