diff --git a/hosts/nixos/home/partials/gnome/WhiteHair.jpg b/hosts/nixos/home/partials/gnome/WhiteHair.jpg
deleted file mode 100644
index da36336..0000000
Binary files a/hosts/nixos/home/partials/gnome/WhiteHair.jpg and /dev/null differ
diff --git a/hosts/nixos/home/partials/gnome/dconf.nix b/hosts/nixos/home/partials/gnome/dconf.nix
index 9660fa5..cec9983 100644
--- a/hosts/nixos/home/partials/gnome/dconf.nix
+++ b/hosts/nixos/home/partials/gnome/dconf.nix
@@ -48,8 +48,8 @@ with lib.hm.gvariant;
 
       "org/gnome/desktop/background" = {
         picture-options = "zoom";
-        picture-uri = "file://" + ./WhiteHair.jpg;
-        picture-uri-dark = "file://" + ./WhiteHair.jpg;
+        picture-uri = "file://" + ./walls.jpg;
+        picture-uri-dark = "file://" + ./walls.jpg;
       };
 
       "org/gnome/shell/extensions/dash-to-panel" = {
diff --git a/hosts/nixos/home/partials/gnome/walls.jpg b/hosts/nixos/home/partials/gnome/walls.jpg
new file mode 100644
index 0000000..3b9f4aa
Binary files /dev/null and b/hosts/nixos/home/partials/gnome/walls.jpg differ
diff --git a/hosts/nixos/home/partials/xdg.nix b/hosts/nixos/home/partials/xdg.nix
deleted file mode 100644
index 4900c3f..0000000
--- a/hosts/nixos/home/partials/xdg.nix
+++ /dev/null
@@ -1,22 +0,0 @@
-{ ... }:
-
-{
-  xdg = {
-    userDirs = {
-      enable = true;
-      createDirectories = true;
-    };
-    desktopEntries = {
-      rust-rover = {
-        name = "RustRover";
-        comment = "Rust IDE from JetBrains";
-        genericName = "Rust IDE from JetBrains";
-        exec = "rust-rover";
-        terminal = false;
-        icon = "rustrover";
-        type = "Application";
-        categories = [ "Development" ];
-      };
-    };
-  };
-}
diff --git a/hosts/nixos/home/users/alistreaza.nix b/hosts/nixos/home/users/alistreaza.nix
index 052e6ad..49cbde0 100644
--- a/hosts/nixos/home/users/alistreaza.nix
+++ b/hosts/nixos/home/users/alistreaza.nix
@@ -22,9 +22,6 @@
     home.env.nix.enable = true;
     home.ide.zed.enable = true;
 
-    # Markdown Editor
-    home.md.obsidian.enable = true;
-
     # The state version is required and should stay at the version you
     # originally installed.
     home.stateVersion = "25.11";
diff --git a/hosts/nixos/system/hardware-configuration.nix b/hosts/nixos/system/hardware-configuration.nix
index 41f0ccf..e2761bf 100644
--- a/hosts/nixos/system/hardware-configuration.nix
+++ b/hosts/nixos/system/hardware-configuration.nix
@@ -14,18 +14,18 @@
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =
-    { device = "/dev/disk/by-uuid/5a30ecb8-36f4-4cc3-aa59-a7d93a57fef7";
+    { device = "/dev/disk/by-uuid/cced5eee-e333-4441-b8d5-860b81a34971";
       fsType = "ext4";
     };
 
   fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/D3A5-C679";
+    { device = "/dev/disk/by-uuid/3A15-DA11";
       fsType = "vfat";
       options = [ "fmask=0077" "dmask=0077" ];
     };
 
   swapDevices =
-    [ { device = "/dev/disk/by-uuid/ad944d25-c53a-4cef-b336-a89cf3110b8c"; }
+    [ { device = "/dev/disk/by-uuid/e33a91c3-76d2-4b33-9f37-a5a27cf5ac7f"; }
     ];
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
diff --git a/hosts/nixos/system/os.nix b/hosts/nixos/system/os.nix
index b205f90..e6827f8 100755
--- a/hosts/nixos/system/os.nix
+++ b/hosts/nixos/system/os.nix
@@ -26,6 +26,9 @@
   os.virtualisation.cuda.enable = true;
   os.virtualisation.podman.enable = true;
 
+  # Flatpak
+  os.flatpak.apps.enable = true;
+
   # Ssh
   programs.ssh.enableAskPassword = false; # No-window git push fix
 
diff --git a/modules/home/nixos/obsidian.nix b/modules/home/nixos/obsidian.nix
deleted file mode 100644
index 6e723ce..0000000
--- a/modules/home/nixos/obsidian.nix
+++ /dev/null
@@ -1,22 +0,0 @@
-{
-  lib,
-  pkgs,
-  config,
-  ...
-}:
-with lib;
-let
-  cfg = config.home.md.obsidian;
-in
-{
-  options.home.md.obsidian = {
-    enable = mkEnableOption "Obsidian options";
-  };
-  config = mkIf cfg.enable {
-
-    home.packages = with pkgs; [
-      obsidian
-    ];
-
-  };
-}
diff --git a/modules/system/nixos/apps/flatpak.nix b/modules/system/nixos/apps/flatpak.nix
new file mode 100644
index 0000000..f822326
--- /dev/null
+++ b/modules/system/nixos/apps/flatpak.nix
@@ -0,0 +1,49 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+with lib;
+let
+  grep = pkgs.gnugrep;
+  cfg = config.os.flatpak.apps;
+  flatpaks = [
+    "com.usebottles.bottles"
+    "io.github.flattool.Warehouse"
+  ];
+in
+{
+  options.os.flatpak.apps = {
+    enable = mkEnableOption "System gnome apps service";
+  };
+  config = mkIf cfg.enable {
+
+    services.flatpak.enable = true;
+    system.userActivationScripts.flatpakManagement = {
+      text = ''
+
+        ${pkgs.flatpak}/bin/flatpak remote-add --if-not-exists fedora oci+https://registry.fedoraproject.org
+
+        installedFlatpaks=$(${pkgs.flatpak}/bin/flatpak list --app --columns=application)
+
+        for installed in $installedFlatpaks; do
+          if ! echo ${toString flatpaks} | ${grep}/bin/grep -q $installed; then
+            echo "Suppression de $installed car il n'est pas dans la liste desiredFlatpaks."
+            ${pkgs.flatpak}/bin/flatpak uninstall -y --noninteractive $installed
+          fi
+        done
+
+        for app in ${toString flatpaks}; do
+          echo "Vérification que $app est installé."
+          ${pkgs.flatpak}/bin/flatpak install -y flathub $app
+        done
+
+        ${pkgs.flatpak}/bin/flatpak uninstall --unused -y
+        ${pkgs.flatpak}/bin/flatpak update -y
+
+      '';
+    };
+
+  };
+}
diff --git a/modules/system/nixos/apps/gnome/apps.nix b/modules/system/nixos/apps/gnome/apps.nix
index 3264c38..516a56b 100644
--- a/modules/system/nixos/apps/gnome/apps.nix
+++ b/modules/system/nixos/apps/gnome/apps.nix
@@ -15,21 +15,9 @@ in
   config = mkIf cfg.enable {
 
     environment = {
-      systemPackages =
-        with pkgs;
-        [
-          # Gnome media apps
-          loupe
-          papers
-          celluloid
-
-          resources
-          gnome-logs
-        ]
-        ++ [
-          # Gnome files explorer
-          nautilus
-        ];
+      systemPackages = with pkgs; [
+        nautilus # Gnome files explorer
+      ];
     };
 
     services.gvfs.enable = true; # SMB, FTP, ... access