dns

flake.nix

@@ -26,9 +26,9 @@
       lib = nixpkgs.lib;
       lib' = import ./lib.nix { inherit lib; };
 
-      specialArgs = {
+      specialArgs = rec {
         inherit inputs lib';
-        var = (lib'.walk-dir ./var).map_import_with_lib;
+        var = (lib'.walk-dir ./var)._map (f: import f { inherit lib var; });
       };
       overlays = _: {
         nixpkgs.overlays = [ colmena.overlay ];

host/default.nix

@@ -1,4 +1,4 @@
-{ ... }:
+{ var, ... }:
 {
   imports = [
     ./boot.nix
@@ -7,4 +7,6 @@
     ./shell.nix
     ./users.nix
   ];
+
+  networking.extraHosts = var.lan-dns.hostsFile;
 }

lib.nix

@@ -1,14 +1,10 @@
 { lib, ... }:
 with builtins;
-let
-  lib' = rec {
-    walk-dir =
 let
   walk-dir-inner =
     path:
     let
       dir = readDir path;
-
     in
     lib.mapAttrs' (filename: value: {
       name = lib.removeSuffix ".nix" filename;
@@ -21,31 +17,13 @@ let
           throw "Items of type ${value} are unsupported.";
     }) dir;
 
-        helper-attrs =
-          subpaths:
-          let
-            _files = lib.collect (x: isPath x || isString x) subpaths;
-            _nix_files = filter (lib.hasSuffix ".nix") _files;
-          in
-          rec {
-            to_mod = _: {
-              imports = _nix_files;
-            };
-            to_mod_without_default = without_default.to_mod;
-            collect_nix_files = _nix_files;
-            map_import = lib.mapAttrsRecursive (_: import) subpaths;
-            map_import_with_lib = lib.mapAttrsRecursive (_: x: (import x) { inherit lib lib'; }) subpaths;
-            without_default =
-              let
-                subpaths' = removeAttrs subpaths [ "default" ];
-              in
-              with-helper-attrs subpaths';
+  helper-attrs = subpaths: {
+    _map = f: lib.mapAttrsRecursive (_: f) subpaths;
   };
 
   with-helper-attrs =
     x: if isAttrs x then lib.mapAttrs (_: with-helper-attrs) x // helper-attrs x else x;
 in
-      p: with-helper-attrs (walk-dir-inner p);
-  };
-in
-lib'
+{
+  walk-dir = p: with-helper-attrs (walk-dir-inner p);
+}

var/lan-dns.nix

@@ -0,0 +1,18 @@
+{ lib, var, ... }:
+let
+  lan-tld = ".lan";
+  lan-base-domain = ".hdohmen.de";
+  lan-hosts = lib.mapAttrs' (name: value: {
+    name = "${name}${lan-tld}";
+    inherit value;
+  }) var.wg.ips;
+in
+rec {
+  hostsFile = lib.concatStringsSep "\n" (lib.mapAttrsFlatten (n: v: "${n}\t${v}") hosts);
+  hosts =
+    lan-hosts
+    // lib.mapAttrs' (name: value: {
+      name = "${name}${lan-base-domain}";
+      inherit value;
+    }) lan-hosts;
+}

var/wg.nix

@@ -32,4 +32,7 @@ rec {
       lib.attrValues (lib.filterAttrs (n: _: n != host) wireguard-network)
     );
 
+  ips =
+    with builtins;
+    mapAttrs (name: value: head (lib.splitString "/" (head value.ips))) wireguard-network;
 }