fix: missing files, nix.gc temp

nixos/common/nix.nix

@@ -7,7 +7,7 @@ in {
   };
 
   nix.gc = {
-    automatic = mkDefault true;
+    automatic = mkDefault false;
     dates = mkDefault "weekly";
     options = mkDefault "--delete-older-than 7d";
   };

nixos/i3.nix

@@ -0,0 +1,14 @@
+_: let
+  super = "Mod4";
+in {
+  xsession.windowManager.i3 = {
+    enable = true;
+    config = {
+      modifier = super;
+      fonts = [ ];
+    };
+
+    bars = [
+    ];
+  };
+}

nixos/motd.nix

@@ -0,0 +1,5 @@
+_: {
+  programs.rust-motd = {
+    enable = true;
+  };
+}

nixos/tz.nix

@@ -0,0 +1,12 @@
+_: {
+  services.tzupdate.enable = true;
+  systemd.timers.tzupdate = {
+    description = "Attempt to update timezone every hour";
+    timerConfig = {
+      OnBootSec="1m";
+      OnUnitInactiveSec="1h";
+      Unit = "tzupdate.service";
+    };
+    wantedBy = [ "timers.target" ];
+  };
+}

nixos/x11.nix

@@ -0,0 +1,16 @@
+{ config, pkgs, ... }: {
+  services.xserver = {
+    enable = true;
+    autorun = false;
+    exportConfiguration = true;
+    in {
+      startx.enable = true;
+    };
+  };
+
+  environment.systemPackages = with pkgs; [
+    xorg.xinit
+    xsel
+    scrot
+  ];
+}