nixos/zerotierone: switch from manually generating the .link file to use the module

Previously, systemd.network.links was only respected with networkd
enabled, but it's really udev taking care of links, no matter if
networkd is enabled or not.

With our module fixed, there's no need to manually manage the text file
anymore.

This was originally applied in 3d1079a20dafd82fac7ac857e63c91e787f4eaaa,
but was reverted due to 1115959a8d4d73ad73341563dc8bbf52230a281e causing
evaluation errors on hydra.

1 files changed, 9 insertions, 8 deletions

diff --git a/nixos/modules/services/networking/zerotierone.nix b/nixos/modules/services/networking/zerotierone.nix
index 042c4d5addd..cf39ed065a7 100644
--- a/nixos/modules/services/networking/zerotierone.nix
+++ b/nixos/modules/services/networking/zerotierone.nix
@@ -69,13 +69,14 @@ in
     environment.systemPackages = [ cfg.package ];
 
     # Prevent systemd from potentially changing the MAC address
-    environment.etc."systemd/network/50-zerotier.link".text = ''
-      [Match]
-      OriginalName=zt*
-
-      [Link]
-      AutoNegotiation=false
-      MACAddressPolicy=none
-    '';
+    systemd.network.links."50-zerotier" = {
+      matchConfig = {
+        OriginalName = "zt*";
+      };
+      linkConfig = {
+        AutoNegotiation = false;
+        MACAddressPolicy = "none";
+      };
+    };
   };
 }