Stabilize playbook

Changed the playbook to no longer perform unnecessary tasks.
This allows for consecutive reruns without changes.
This also allows for stable vm updates via ansible.

local.yml

 ---
 - hosts: localhost
-  tasks:
+  pre_tasks:
 
   - name: Update packages
     become: true
@@ -9,6 +9,8 @@
       update_cache: true
       force_apt_get: true
 
+  tasks:
+
   - name: Install xfce desktop and associated programms
     become: true
     apt:
@@ -83,6 +85,17 @@
       executable: pip3
       name: sshuttle
   
+  - name: Get current mpstools hash
+    set_fact:
+      mpstools_curr_hash: "{{ lookup('file', '/opt/mpstools/checksum', errors='ignore') }}"
+      
+  - name: Get new mpstools hash
+    stat:
+      path: files/mpstools.tgz
+      checksum_algorithm: sha1
+      get_checksum: true
+    register: mpstools_new
+
   - name: Install toolchain
     become: true
     unarchive:
@@ -91,14 +104,7 @@
       src: files/mpstools.tgz
       dest: /opt
       keep_newer: true
-
-  - name: Add toolchain to PATH (for bash only)
-    become: true
-    become_user: fs
-    lineinfile:
-      path: ~/.bashrc
-      line: 'export PATH="/opt/mpstools/bin:$PATH"'
-      create: true
+    when: mpstools_curr_hash != mpstools_new.stat.checksum
 
   # This has worked while testing but it is not a good way to solve the issue.
   # It basically forces the executables to use the newer version of libncurses
@@ -111,6 +117,24 @@
       - /opt/mpstools/bin/arm-v4t-eabi-gdb
       - /opt/mpstools/bin/arm-elf-insight
       - /opt/mpstools/bin/arm-elf-eabi-insight
+    when: mpstools_curr_hash != mpstools_new.stat.checksum
+
+  - name: Set toolchain checksum
+    become: true
+    copy:
+      owner: root
+      group: root
+      dest: /opt/mpstools/checksum
+      content: "{{ mpstools_new.stat.checksum }}"
+    when: mpstools_curr_hash != mpstools_new.stat.checksum
+
+  - name: Add toolchain to PATH (for bash only)
+    become: true
+    become_user: fs
+    lineinfile:
+      path: ~/.bashrc
+      line: 'export PATH="/opt/mpstools/bin:$PATH"'
+      create: true
 
   - name: Install xfce themes
     become: true
@@ -170,7 +194,6 @@
       src: files/conf/lightdm-gtk-greeter.conf
       dest: /etc/lightdm
 
-  # TODO: GEDIT THEME IS NOT APPLIED
   - name: Install preconfigured config
     become: true
     copy:
@@ -178,14 +201,21 @@
       group: fs
       src: files/conf/home-conf/{{ item }}
       dest: /home/fs
+      force: false
     with_items:
       - .config
       - .sn
   
-  - name: Create user home dirs
+  - name: Check if user dirs exist
+    stat:
+      path: /home/fs/.config/user-dirs.dirs
+    register: user_dirs
+  
+  - name: Create user dirs
     become: true
     become_user: fs
     shell: xdg-user-dirs-update
+    when: not user_dirs.stat.exists
 
   # This is a critical step to check for security issues. The installed ca
   # comes from the DFN website: https://pki.pca.dfn.de/dfn-ca-global-g2/cgi-bin/pub/pki
@@ -262,6 +292,7 @@
     become_user: fs
     shell: xdg-user-dir DESKTOP
     register: user_desktop
+    changed_when: false
   
   - name: Install desktop launchers
     become: true