defaults: add option for NetBIOSName

default.nix

@@ -28,6 +28,7 @@ let
         ./modules/system/defaults/LaunchServices.nix
         ./modules/system/defaults/dock.nix
         ./modules/system/defaults/finder.nix
+        ./modules/system/defaults/smb.nix
         ./modules/system/defaults/trackpad.nix
         ./modules/system/applications.nix
         ./modules/system/etc.nix

modules/networking/default.nix

@@ -3,34 +3,29 @@
 with lib;
 
 let
-
   cfg = config.networking;
 
   hostName = optionalString (cfg.hostName != null) ''
     scutil --set ComputerName '${cfg.hostName}'
     scutil --set LocalHostName '${cfg.hostName}'
     scutil --set HostName '${cfg.hostName}'
-    defaults write /Library/Preferences/SystemConfiguration/com.apple.smb.server NetBIOSName -string '${cfg.hostName}'
   '';
-
 in
 
 {
   options = {
-
     networking.hostName = mkOption {
       type = types.nullOr types.str;
       default = null;
       example = "myhostname";
-      description = ''
-        Hostname for your machine.
-      '';
+      description = "Hostname for your machine.";
     };
-
   };
 
   config = {
 
+    system.defaults.smb.NetBIOSName = cfg.hostName;
+
     system.activationScripts.networking.text = ''
       # Set defaults
       echo "configuring networking..." >&2

modules/system/defaults-write.nix

@@ -26,6 +26,7 @@ let
   LaunchServices = defaultsToList "com.apple.LaunchServices" cfg.LaunchServices;
   dock = defaultsToList "com.apple.dock" cfg.dock;
   finder = defaultsToList "com.apple.finder" cfg.finder;
+  smb = defaultsToList "/Library/Preferences/SystemConfiguration/com.apple.smb.server" cfg.smb;
   trackpad = defaultsToList "com.apple.AppleMultitouchTrackpad" cfg.trackpad;
   trackpadBluetooth = defaultsToList "com.apple.driver.AppleBluetoothMultitouch.trackpad" cfg.trackpad;
 
@@ -45,6 +46,7 @@ in
       ${concatStringsSep "\n" LaunchServices}
       ${concatStringsSep "\n" dock}
       ${concatStringsSep "\n" finder}
+      ${concatStringsSep "\n" smb}
       ${concatStringsSep "\n" trackpad}
       ${concatStringsSep "\n" trackpadBluetooth}
     '';

modules/system/defaults/smb.nix

@@ -0,0 +1,13 @@
+{ config, lib, ... }:
+
+with lib;
+
+{
+  options = {
+    system.defaults.smb.NetBIOSName = mkOption {
+      type = types.nullOr types.str;
+      default = null;
+      description = "Hostname to use for NetBIOS.";
+    };
+  };
+}

tests/networking.nix

@@ -0,0 +1,14 @@
+{ config, pkgs, ... }:
+
+{
+  networking.hostName = "EVE";
+
+  test = ''
+    echo checking hostname in /activate >&2
+    grep "scutil --set ComputerName 'EVE'" ${config.out}/activate
+    grep "scutil --set LocalHostName 'EVE'" ${config.out}/activate
+    grep "scutil --set HostName 'EVE'" ${config.out}/activate
+    echo checking defaults write in ${config.out}/activate-user >&2
+    grep "defaults write /Library/Preferences/SystemConfiguration/com.apple.smb.server 'NetBIOSName' -string 'EVE'" ${config.out}/activate-user
+  '';
+}