fix(tazjin/tverskoy): copy & paste some l2tp fix from nixpkgs#64965

Change-Id: Ib6375cd2281ce7eff87d9a1f8bd8f811ed180a87
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5155
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>

third_party/sources/default.nix

@@ -1,5 +1,6 @@
 # This file has been generated by Niv.
-_: let
+_:
+let
 
   #
   # The fetchers. fetch_<type> fetches specs of type <type>.
@@ -121,14 +122,17 @@ _: let
 
   # Create the final "sources" from the config
   mkSources = config:
-    mapAttrs (
+    mapAttrs
+      (
         name: spec:
           if builtins.hasAttr "outPath" spec
-        then abort
+          then
+            abort
               "The values in sources.json should not have an 'outPath' attribute"
           else
             spec // { outPath = replace name (fetch config.pkgs name spec); }
-    ) config.sources;
+      )
+      config.sources;
 
   # The "config" used by the fetchers
   mkConfig =

users/tazjin/nixos/tverskoy/default.nix

@@ -145,6 +145,11 @@ lib.fix (self: {
     ];
   };
 
+  # from https://github.com/NixOS/nixpkgs/issues/64965
+  environment.etc."ipsec.secrets".text = ''
+    include ipsec.d/ipsec.nm-l2tp.secrets
+  '';
+
   security.rtkit.enable = true;
 
   services = {