[microvm] fix comparision

this reduces build times drastically

machines/configuration.nix

@@ -46,6 +46,11 @@ let
     {
       microvm = {
         hypervisor = "qemu";
+        shares = [ {
+          tag = "ro-store";
+          source = "/nix/store";
+          mountPoint = "/nix/.ro-store";
+        } ];
         interfaces = [
           {
             type = "tap";
@@ -94,12 +99,4 @@ in
       ./lucia/hardware_configuration.nix
     ];
   };
-
-  gitea = nixosSystem {
-    system = "x86_64-linux";
-    specialArgs.inputs = inputs;
-    modules = makeMicroVM "gitea" "10.0.0.6" [
-      ./gitea/configuration.nix
-    ];
-  };
 }

machines/gitea/configuration.nix

@@ -1,37 +0,0 @@
-{ config, lib, pkgs, inputs, ... }:
-
-with lib;
-
-{
-  #sops.defaultSopsFile = ./secrets.yaml;
-
-  networking = {
-    hostName = mkDefault "gitea";
-    useDHCP = false;
-    nameservers = [ "1.1.1.1" ];
-  };
-
-  imports = [
-    ../modules/malobeo_user.nix
-    ../modules/sshd.nix
-    ../modules/minimal_tools.nix
-    ../modules/autoupdate.nix
-  ];
-
-  services.gitea = {
-    enable = true;
-    appName = "malobeo git instance";
-
-    settings.server = {
-      DOMAIN = "git.malobeo.org";
-      HTTP_PORT = 3001;
-      SSH_PORT = 22;
-      ROOT_URL = "https://git.malobeo.org/";
-    };
-  };
-
-  networking.firewall.allowedTCPPorts = [ 3001 ];
-
-  system.stateVersion = "22.11"; # Did you read the comment?
-}
-

machines/modules/malobeo/microvm_host.nix

@@ -13,6 +13,14 @@ in
         type = types.bool;
         description = lib.mdDoc "Setup bridge device for microvms.";
       };
+
+      deployHosts = mkOption {
+        default = [];
+        type = types.listOf string;
+        description = ''
+          List hostnames of MicroVMs that should be automatically initializes and autostart
+        '';
+      };
     };
   };
 
@@ -48,5 +56,24 @@ in
         networkConfig.Bridge = "microvm";
       };
     };
+
+    imports = mkIf (lib.length cfg.deployHosts != 0) [
+      inputs.microvm.nixosModules.host
+    ];
+
+    microvm.autostart = cfg.deployHosts;
+    microvm.vms = 
+    let
+      # Map the values to each hostname to then generate a Attrs using listToAttrs
+      mapperFunc = name: { inherit name; value = {
+          # Host build-time reference to where the MicroVM NixOS is defined
+          # under nixosConfigurations
+          flake = self;
+          # Specify from where to let `microvm -u` update later on
+          updateFlake = "git+https://git.dynamicdiscord.de/kalipso/infrastructure?ref=microvm";
+        }; };
+    in
+    mkIf (lib.length cfg.deployHosts != 0)
+    builtins.listToAttrs (map mapperFunc cfg.deployHosts);
   };
 }