common/postfix: init

base/default.nix

@@ -10,9 +10,12 @@
 
     ./services/acme.nix
     ./services/auto-upgrade.nix
+    ./services/irqbalance.nix
     ./services/logrotate.nix
     ./services/nginx.nix
     ./services/openssh.nix
+    ./services/postfix.nix
+    ./services/smartd.nix
     ./services/thermald.nix
   ];
 

base/nix.nix

@@ -1,8 +1,19 @@
 { inputs, ... }:
 {
-  nix.gc.automatic = true;
+  nix = {
-  nix.gc.options = "--delete-older-than 2d";
+    gc = {
-  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+      automatic = true;
+      options = "--delete-older-than 2d";
+    };
+
+    settings = {
+      allow-dirty = true;
+      auto-optimise-store = true;
+      builders-use-substitutes = true;
+      experimental-features = [ "nix-command" "flakes" ];
+      log-lines = 50;
+      use-xdg-base-directories = true;
+    };
 
     /* This makes commandline tools like
     ** nix run nixpkgs#hello
@@ -10,8 +21,10 @@
     ** use the same channel the system
     ** was built with
     */
-  nix.registry = {
+    registry = {
-    nixpkgs.flake = inputs.nixpkgs;
+      "nixpkgs".flake = inputs.nixpkgs;
+      "pvv-nix".flake = inputs.self;
+    };
+    nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
   };
-  nix.nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
 }

base/services/irqbalance.nix

@@ -0,0 +1,4 @@
+{ ... }:
+{
+  services.irqbalance.enable = true;
+}

base/services/postfix.nix

@@ -0,0 +1,23 @@
+{ config, pkgs, lib, ... }:
+let
+  cfg = config.services.postfix;
+in
+{
+  services.postfix = {
+    enable = true;
+
+    hostname = "${config.networking.hostName}.pvv.ntnu.no";
+    domain = "pvv.ntnu.no";
+
+    relayHost = "smtp.pvv.ntnu.no";
+    relayPort = 465;
+
+    config = {
+      smtp_tls_wrappermode = "yes";
+      smtp_tls_security_level = "encrypt";
+    };
+
+    # Nothing should be delivered to this machine
+    destination = [ ];
+  };
+}

base/services/smartd.nix

@@ -0,0 +1,8 @@
+{ config, pkgs, lib, ... }:
+{
+  services.smartd.enable = lib.mkDefault true;
+
+  environment.systemPackages = lib.optionals config.services.smartd.enable (with pkgs; [
+    smartmontools
+  ]);
+}