From 35643676b4b836fd2f63e431aabb6a5dc44e7cb4 Mon Sep 17 00:00:00 2001
From: oddlama <oddlama@oddlama.org>
Date: Mon, 1 Apr 2024 14:33:50 +0200
Subject: [PATCH] feat(topology): remove cidr mask from systemd network
 addresses

---
 topology/nixos/extractors/systemd-network.nix | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/topology/nixos/extractors/systemd-network.nix b/topology/nixos/extractors/systemd-network.nix
index 044a082..97e7e2c 100644
--- a/topology/nixos/extractors/systemd-network.nix
+++ b/topology/nixos/extractors/systemd-network.nix
@@ -8,7 +8,10 @@
     any
     attrValues
     concatLists
+    concatStringsSep
     flip
+    init
+    length
     listToAttrs
     mapAttrsToList
     mkDefault
@@ -17,7 +20,15 @@
     mkMerge
     nameValuePair
     optional
+    splitString
     ;
+
+  removeCidrMask = x: let
+    toks = splitString "/" x;
+  in
+    if length toks > 1
+    then concatStringsSep "/" (init toks)
+    else builtins.head toks;
 in {
   options.topology.extractors.systemd-network.enable = mkEnableOption "topology systemd-network extractor" // {default = true;};
 
@@ -60,8 +71,7 @@ in {
             optional (interfaceName != null) {
               ${interfaceName} = {
                 mac = network.matchConfig.MACAddress or null;
-                # TODO: FIXME: remove cidr mask
-                addresses = network.address ++ (network.networkConfig.Address or []);
+                addresses = map removeCidrMask (network.address ++ (network.networkConfig.Address or []));
                 gateways = network.gateway ++ (network.networkConfig.Gateway or []);
               };
             }