refactor(flake): split assembly by concept

flake/guests.nix

@@ -3,22 +3,12 @@
   lib,
   self,
   specialArgs,
-  bridgeName,
   moduleFiles,
   registryAssembly,
+  dotfilesLib,
 }:
 let
-  inherit (lib) escapeShellArg mapAttrsToList;
-
-  deriveMac =
-    name:
-    let
-      hash = builtins.hashString "sha256" name;
-      octet = i: builtins.substring (i * 2) 2 hash;
-    in
-    lib.concatStringsSep ":" ([ "02" ] ++ map octet [ 0 1 2 3 4 ]);
-
-  guest =
+  mkGuest =
     {
       name,
       interior ? { },
@@ -59,13 +49,13 @@ let
 
       createdMounts = lib.filterAttrs (_guestPath: m: m.create != null) cfg.mounts;
       mountCreateScript = lib.concatStringsSep "\n" (
-        mapAttrsToList (
+        lib.mapAttrsToList (
           _guestPath: m:
           let
             create = m.create;
           in
           ''
-            ${config.system.path}/bin/install -d -o ${escapeShellArg (toString create.owner)} -g ${escapeShellArg create.group} -m ${escapeShellArg create.mode} ${escapeShellArg m.hostPath}
+            ${config.system.path}/bin/install -d -o ${lib.escapeShellArg (toString create.owner)} -g ${lib.escapeShellArg create.group} -m ${lib.escapeShellArg create.mode} ${lib.escapeShellArg m.hostPath}
           ''
         ) createdMounts
       );
@@ -113,7 +103,7 @@ let
         };
         mac = lib.mkOption {
           type = lib.types.str;
-          default = deriveMac name;
+          default = dotfilesLib.deriveMac name;
           defaultText = lib.literalMD "a stable address derived from the guest's namespace path";
           example = "bc:24:11:00:00:01";
           description = ''
@@ -316,7 +306,7 @@ let
             }
             (lib.mkIf networked (
               let
-                bridgeDevice = "sys-subsystem-net-devices-${lib.replaceStrings [ "-" ] [ "\\x2d" ] (bridgeName cfg.vlan)}.device";
+                bridgeDevice = "sys-subsystem-net-devices-${lib.replaceStrings [ "-" ] [ "\\x2d" ] (dotfilesLib.bridgeName cfg.vlan)}.device";
               in
               {
                 after = [ bridgeDevice ];
@@ -329,7 +319,7 @@ let
         containers.${machineName} = lib.mkIf (cfg.backend == "container") {
           autoStart = cfg.autoStart;
           privateNetwork = lib.mkDefault true;
-          hostBridge = lib.mkIf networked (bridgeName cfg.vlan);
+          hostBridge = lib.mkIf networked (dotfilesLib.bridgeName cfg.vlan);
           privateUsers = lib.mkDefault "no";
           additionalCapabilities = lib.optionals cfg.nesting [ "CAP_NET_ADMIN" ];
           allowedDevices = lib.optionals cfg.nesting [
@@ -366,5 +356,5 @@ let
     };
 in
 {
-  inherit deriveMac guest;
+  inherit mkGuest;
 }