diff --git a/systems/ASUS-G46VW/configuration.nix b/systems/ASUS-G46VW/configuration.nix
index bec120c90..bf187681e 100644
--- a/systems/ASUS-G46VW/configuration.nix
+++ b/systems/ASUS-G46VW/configuration.nix
@@ -6,13 +6,12 @@
 
 {
   imports =
-    [ # Include the results of the hardware scan.
+    [
+      ../common.nix
       ./hardware-configuration.nix
     ];
 
   nixpkgs.overlays = [
-    (import ../../overlays/sudo.nix)
-    (import ../../overlays/neovim.nix)
     (import ../../overlays/steam.nix)
     (import ../../overlays/steamcontroller-udev-rules.nix)
     (import ../../overlays/ledger-udev-rules.nix)
@@ -46,38 +45,17 @@
     defaultLocale = "fr_FR.UTF-8";
   };
 
-  # Set your time zone.
-  time.timeZone = "Europe/Paris";
-
   # List packages installed in system profile. To search by name, run:
   # $ nix-env -qaP | grep wget
   nixpkgs.config.allowUnfree = true;
   environment.systemPackages = with pkgs; [
-    gitFull
-    tig
-    neovim
-    usbutils
     filezilla
-    lftp
     wineStaging
     winetricks
-    youtube-dl
-    nix-bash-completions
-    nix-zsh-completions
-    python3Full
-    openvpn
     qbittorrent
     transmission-remote-gtk
-    yarn2nix
-    file
-    binutils
-    patchelf
-    gcc
-    nix-index
     appimage-run
     bat
-    wireguard
-    nfsUtils
 
     gopass
     xclip
@@ -127,17 +105,9 @@
 
     glxinfo
     i7z
-    lshw
-    nmap
-    nox
     obs-studio
-    sassc
-    telnet
   ];
 
-  programs.tmux.enable = true;
-  programs.tmux.clock24 = true;
-
   programs.wireshark.enable = true;
   programs.wireshark.package = pkgs.wireshark;
 
@@ -210,18 +180,6 @@
     uid = 1000;
     extraGroups = [ "wheel" "networkmanager" "wireshark" ];
   };
-  
-  users.defaultUserShell = pkgs.zsh;
-  programs.zsh.enable = true;
-  programs.zsh.autosuggestions.enable = true;
-  programs.zsh.enableCompletion = true;
-  programs.zsh.syntaxHighlighting.enable = true;
-  programs.zsh.ohMyZsh.enable = true;
-  programs.zsh.ohMyZsh.plugins = [ "git" "colored-man-pages" "command-not-found" "extract" ];
-  programs.zsh.ohMyZsh.theme = "bureau";
-
-  nix.gc.automatic = true;
-  nix.gc.options = "--delete-older-than 15d";
 
   services.syncthing.enable = true;
   services.syncthing.user = "paul";
diff --git a/systems/LoutreOS/configuration.nix b/systems/LoutreOS/configuration.nix
index 5fe8a08b9..a15e8f892 100644
--- a/systems/LoutreOS/configuration.nix
+++ b/systems/LoutreOS/configuration.nix
@@ -6,6 +6,7 @@
 
 {
   imports = [
+    ../common.nix
     ./hardware-configuration.nix
     ./users.nix
     ./services.nix
@@ -32,57 +33,13 @@
     hostId = "7e66e347";
   };
 
-  time.timeZone = "Europe/Paris";
-
   nixpkgs.overlays = [
     (import ../../overlays/riot-web.nix)
-    (import ../../overlays/sudo.nix)
-    (import ../../overlays/neovim.nix)
     (import ../../overlays/site-max.nix)
     (import ../../overlays/site-musique.nix)
     (import ../../overlays/dogetipbot-telegram.nix)
     (import ../../overlays/unstable_pkgs.nix)
   ];
-  environment.systemPackages = with pkgs; [
-    neovim
-    git
-    tmux
-    ncdu
-    beets
-    rclone
-    borgbackup
-    bind
-    tig
-    openssl
-    lftp
-    nix-prefetch-scripts
-    smartmontools
-    htop
-    telnet
-    tldr
-    fzf
-    file
-  ];
-
-  nixpkgs.config.allowUnfree = true;
-
-  users.defaultUserShell = pkgs.zsh;
-  programs.zsh = {
-    enable = true;
-    enableAutosuggestions = true;
-    enableCompletion = true;
-    syntaxHighlighting.enable = true;
-    interactiveShellInit = ''
-      source "$(${pkgs.fzf}/bin/fzf-share)/key-bindings.zsh"
-    '';
-    ohMyZsh = {
-      enable = true;
-      plugins = [ "git" "colored-man-pages" "command-not-found" "extract" ];
-      theme = "bureau";
-    };
-  };
-
-  environment.variables = { EDITOR = "nvim"; };
 
   services.openssh = {
     enable = true;
@@ -101,8 +58,5 @@
   system.autoUpgrade.enable = true;
   systemd.services.nixos-upgrade.path = with pkgs; [ gzip gnutar xz.bin config.nix.package.out ];
 
-  nix.gc.automatic = true;
-  nix.gc.options = "--delete-older-than 15d";
-
   system.stateVersion = "18.03";
 }
diff --git a/systems/common.nix b/systems/common.nix
new file mode 100644
index 000000000..c159b2ab8
--- /dev/null
+++ b/systems/common.nix
@@ -0,0 +1,83 @@
+{ config, pkgs, ... }:
+
+{
+
+  time.timeZone = "Europe/Paris";
+
+  nixpkgs.overlays = [
+    (import ../overlays/sudo.nix)
+    (import ../overlays/neovim.nix)
+  ];
+
+  nixpkgs.config.allowUnfree = true;
+  environment.systemPackages = with pkgs; [
+    # Editeurs
+    neovim
+
+    # Gestionnaires de version
+    gitFull
+    tig
+
+    # Gestion de paquets
+    nix-prefetch-scripts
+    nox
+    nix-index
+
+    # Système
+    smartmontools
+    htop
+    lshw
+    usbutils
+
+    # Réseau
+    telnet
+    rclone
+    lftp
+    wireguard
+    nfsUtils
+    nmap
+
+    # Divers
+    fzf
+    file
+    ncdu
+    youtube-dl
+    tldr
+
+    # Audio
+    beets
+
+    # Outils
+    borgbackup
+
+    # Développement
+    openssl
+  ];
+
+  programs.tmux = {
+    enable = true;
+    clock24 = true;
+  };
+
+  users.defaultUserShell = pkgs.zsh;
+  programs.zsh = {
+    enable = true;
+    enableAutosuggestions = true;
+    enableCompletion = true;
+    syntaxHighlighting.enable = true;
+    interactiveShellInit = ''
+      source "$(${pkgs.fzf}/bin/fzf-share)/key-bindings.zsh"
+    '';
+    ohMyZsh = {
+      enable = true;
+      plugins = [ "git" "colored-man-pages" "command-not-found" "extract" ];
+      theme = "bureau";
+    };
+  };
+
+  environment.variables = { EDITOR = "nvim"; };
+
+  nix.gc.automatic = true;
+  nix.gc.options = "--delete-older-than 15d";
+
+}