♻️ [shared] Refactor system configs

shared/base/home-manager/ssh.nix

@@ -15,13 +15,16 @@ with builtins;
         name = system.hostName;
         value =
           let
-            # TODO rename desktop to homelab
-            hostName = if system.hostName == "homelab" then "admin" else system.hostName;
+            hostName =
+              if (system ? address && system.address ? tailnet) then
+                system.address.tailnet
+              else
+                common.tailnetAddr system.hostName;
           in
           {
             port = 22;
             user = systemConfig.username;
-            hostname = "${hostName}.dns.${common.domain}";
+            hostname = hostName;
           };
       }) systems
     );

shared/base/modules/security/ssh.nix

@@ -8,7 +8,6 @@
 }:
 with builtins;
 let
-  domain = "dns.${common.domain}";
   allSystems = knownSystems ++ systems;
 in
 {
@@ -17,7 +16,12 @@ in
       name = system.hostName;
       value = {
         extraHostNames = [
-          "${system.hostName}.${domain}"
+          (
+            if (system ? address && system.address ? tailnet) then
+              system.address.tailnet
+            else
+              common.tailnetAddr system.hostName
+          )
         ];
         publicKey = system.ssh.publicKey;
       };

shared/common.nix

@@ -14,6 +14,10 @@ rec {
   };
 
   domain = "martials.no";
+  tailnetDomain = "dns.${domain}";
+  localIpPrefix = "192.168.10.";
+  localIpAddr = subAddr: "${localIpPrefix}${builtins.toString subAddr}";
+  tailnetAddr = host: "${host}.${tailnetDomain}";
 
   keymaps = {
     layout = "gb,no";