factorize os configurations

os/common.nix

@@ -8,12 +8,6 @@
   };
   nixpkgs.config.allowUnfree = true;
 
-
-  boot.plymouth = {
-    enable = true;
-    theme = "fade-in";
-  };
-
   networking.networkmanager.enable = true;
 
   time.timeZone = "Europe/Paris";
@@ -35,57 +29,28 @@
   };
   console.keyMap = "fr";
 
-  services.printing.enable = true;
-
-  programs.fish.enable = true;
+  programs.fish = {
+    enable = true;
+    interactiveShellInit = ''
+      set -gx fish_greeting
+    '';
+  };
+  users.defaultUserShell = pkgs.fish;
 
   environment.systemPackages = with pkgs; [
     nh
     neovim
     where-is-my-sddm-theme
   ];
-  programs.hyprland.enable = true;
-
-  services.xserver.enable = true;
-  services.displayManager = {
-    defaultSession = "hyprland";
-    autoLogin = {
-      enable = false;
-      user = "ant";
-    };
-    sddm = {
-      enable = true;
-      wayland.enable = true;
-      package = pkgs.kdePackages.sddm;
-      extraPackages = with pkgs; [
-        where-is-my-sddm-theme
-        kdePackages.qt5compat
-      ];
-      theme = "where_is_my_sddm_theme";
-    };
-  };
 
   security.rtkit.enable = true;
   security.pam.services.swaylock = { };
   security.polkit.enable = true;
-  security.pam.services.ant.enableGnomeKeyring = true;
-  services.gnome.gnome-keyring.enable = true;
-
   security.sudo.wheelNeedsPassword = false;
 
   services.udisks2.enable = true;
-  programs.gamemode.enable = true;
   programs.gnupg.agent.enable = true;
   programs.gnupg.agent.pinentryPackage = pkgs.pinentry-curses;
-  programs.light.enable = true;
-
-  services.pipewire = {
-    enable = true;
-    alsa.enable = true;
-    alsa.support32Bit = true;
-    pulse.enable = true;
-    jack.enable = true;
-  };
 
   programs.nix-ld.enable = true;
 }