update

local.yml

@@ -4,7 +4,7 @@
   become: true
 
   roles:
-    - danielrolls.nix    
+    - nix    
     - packages
       #    - customize
       #    - ansibleuser

roles/nix/defaults/main.yml

@@ -0,0 +1,5 @@
+---
+nix_version: 2.16.1
+installer_checksum: sha512:4edf245baf9641843b6bb750a1889e0266bace6df03cf90845c9c6279db4a3c2d1d100de446550658be84ac9b6b15017b05cd792cb6ee5da7ab74b79b215fd47
+flakes: false
+nix_commands: []

roles/nix/tasks/main.yml

@@ -0,0 +1,107 @@
+
+- name: Get nix version
+  shell: |
+    . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
+    nix --version
+  ignore_errors: true
+  changed_when: false
+  register: nix_version_output
+- name: Set nix version name
+  set_fact:
+    nix_version_on_system: "{{ (nix_version_output.stdout_lines[0] | cut -d' ' -f3"
+  when: nix_version_output.rc == 0
+- name: Download and run installer
+  block:
+    - name: Download installer
+      get_url:
+        url: "{{ installer_path }}"
+        dest: /tmp
+        checksum: "{{ installer_checksum }}"
+    - name: extract installer
+      unarchive:
+        src: /tmp/{{ nix_build }}.tar.xz
+        remote_src: true
+        dest: /tmp/
+    - name: Uninistall the previous nix
+      block:
+        - name: disable nix socket
+          service:
+            name: nix-daemon.socket
+            state: stopped
+            enabled: false
+          become: true
+          ignore_errors: true
+        - name: disable nix service
+          service:
+            name: nix-daemon.service
+            state: stopped
+            enabled: false
+          become: true
+          ignore_errors: true
+        - name: Remove Installed nix files
+          file:
+            state: absent
+            path: /nix
+          become: true
+        - name: Remove Installed nix config files
+          file:
+            state: absent
+            path: /etc/nix
+          become: true
+        - name: stat bash.bashrc.backup-before-nix
+          stat:
+            path: /etc/bash.bashrc.backup-before-nix
+          register: bash_bashrc_backup_stat
+        - name: Restore bash.bashrc
+          shell: mv /etc/bash.bashrc.backup-before-nix /etc/bash.bashrc
+          become: true
+          when: bash_bashrc_backup_stat.stat.exists
+        - name: stat bashrc.backup-before-nix
+          stat:
+            path: /etc/bashrc.backup-before-nix
+          register: bashrc_backup_stat
+        - name: Restore bashrc
+          shell: mv /etc/bashrc.backup-before-nix /etc/bashrc
+          become: true
+          when: bashrc_backup_stat.stat.exists
+        - name: stat zshrc.backup-before-nix
+          stat:
+            path: /etc/zshrc.backup-before-nix
+          register: zshrc_backup_stat
+        - name: Restore zshrc
+          shell: mv /etc/zshrc.backup-before-nix /etc/zshrc
+          become: true
+          when: zshrc_backup_stat.stat.exists
+        - name: stat nix.sh
+          stat:
+            path: /etc/profile.d/nix.sh.backup-before-nix
+          register: nixsh_backup_stat
+        - name: Restore nix.sh
+          shell: mv /etc/profile.d/nix.sh.backup-before-nix /etc/profile.d/nix.sh
+          become: true
+          when: nixsh_backup_stat.stat.exists
+      when: nix_version_on_system is defined and nix_version_on_system != nix_version
+    - name: Run the installer
+      become: true
+      ansible.builtin.shell:
+        cmd: ./install --daemon </dev/null
+        chdir: /tmp/{{ nix_build }}
+  when: (not nix_version_on_system is defined) or nix_version_on_system != nix_version
+- name: Enable flakes
+  become: true
+  lineinfile:
+    path: /etc/nix/nix.conf
+    line: "experimental-features = nix-command flakes"
+  when: flakes
+- name: Add arbritrary nix config
+  blockinfile:
+    path: /etc/nix/nix.conf
+    block: "{{ config }}"
+  become: true
+  when: config is defined
+- name: run nix commands
+  shell: |
+      . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
+      {{ item }}
+  changed_when: true
+  loop: "{{ nix_commands }}"

roles/nix/vars/main.yml

@@ -0,0 +1,3 @@
+---
+nix_build: nix-{{ nix_version }}-x86_64-linux
+installer_path: https://releases.nixos.org/nix/nix-{{ nix_version }}/{{ nix_build }}.tar.xz