updates

common/nixos/common.nix

@@ -16,30 +16,58 @@
     ../../common/style/stylix.nix
   ];
   #
-  nixpkgs.config.allowUnfree = true;
-
-  nix.settings.experimental-features = [
-    "nix-command"
-    "flakes"
+  security.sudo.extraRules = [
+    {
+      users = [ "gwg313" ];
+      commands = [
+        {
+          command = "/run/current-system/sw/bin/nixos-rebuild";
+          options = [ "NOPASSWD" ];
+        }
+      ];
+    }
   ];
+  nixpkgs.config = {
+    allowUnfree = true;
+  };
+  nix = {
+    settings = {
+      substituters = [
+        "https://cache.nixos.org?priority=10"
+        "https://hyprland.cachix.org"
+        "https://nix-community.cachix.org"
+        "https://cache.garnix.io"
+        "https://numtide.cachix.org"
+      ];
+      trusted-public-keys = [
+        "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
+        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+        "cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g="
+        "numtide.cachix.org-1:2ps1kLBUWjxIneOy1Ik6cQjb41X0iXVXeHigGmycPPE="
+      ];
+      experimental-features = [
+        "nix-command"
+        "flakes"
+      ];
+      auto-optimise-store = true;
+      trusted-users = [ "${user}" ];
+    };
+    optimise.automatic = true;
+    gc = {
+      automatic = true;
+      dates = "daily";
+      options = "--delete-older-than 14d";
+    };
 
-  nix.settings.auto-optimise-store = true;
-  nix.optimise.automatic = true;
-
-  nix.settings.trusted-users = [ "${user}" ];
+  };
 
+  services = {
+    fstrim.enable = true;
+  };
   # Disable so comma can be installed
   programs.command-not-found.enable = false;
   programs.nix-index-database.comma.enable = true;
 
-  nix.gc = {
-    automatic = true;
-    dates = "daily";
-    options = "--delete-older-than 14d";
-  };
-
-  services.fstrim.enable = true;
-
   # This value determines the NixOS release from which the default
   # settings for stateful data, like file locations and database versions
   # on your system we e ere taken. It's perfectly fine and recommended to leave

common/nixos/documentation.nix

@@ -13,6 +13,6 @@
   };
 
   environment.sessionVariables = {
-    MANPAGER = "sh -c 'sed -u -e \"s/\\x1B\[[0-9;]*m//g; s/.\\x08//g\" | bat -p -lman'";
+    MANPAGER = "sh -c '${pkgs.gnugrep}/bin/sed -u -e \"s/\\x1B\[[0-9\;]*m//g; s/.\\x08//g\" | ${pkgs.bat}/bin/bat -p -lman'";
   };
 }

common/nixos/packages.nix

@@ -15,6 +15,10 @@
     enableSSHSupport = true;
   };
 
+  environment.sessionVariables = {
+    SSH_AUTH_SOCK = "/run/user/1000/gnupg/S.gpg-agent.ssh";
+  };
+
   # List packages installed in system profile. To search, run:
   # $ nix search wget
   environment.systemPackages = with pkgs; [