test

.vscode/settings.json

@@ -128,6 +128,7 @@
     "maxtime",
     "mechatroner",
     "mediainfo",
+    "microvm",
     "mklabel",
     "mkpart",
     "modesetting",

flake.nix

@@ -33,8 +33,8 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
-    system_tools = {
-      url = "github:RichieCahill/system_tools";
+    microvm = {
+      url = "github:astro/microvm.nix";
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
@@ -47,6 +47,10 @@
       url = "github:Mic92/sops-nix";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    system_tools = {
+      url = "github:RichieCahill/system_tools";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs = {
@@ -56,6 +60,7 @@
     systems,
     nixos-cosmic,
     sops-nix,
+    microvm,
     ...
   } @ inputs: let
     inherit (self) outputs;
@@ -71,10 +76,35 @@
   in {
     inherit lib;
     overlays = import ./overlays {inherit inputs outputs;};
-
     devShells = forEachSystem (pkgs: import ./shell.nix {inherit pkgs;});
     formatter = forEachSystem (pkgs: pkgs.alejandra);
 
+    emulated-dev = nixpkgs.lib.nixosSystem {
+      # host system
+      system = "x86_64-linux";
+      modules = let
+        guestSystem = "aarch64-unknown-linux-gnu";
+        # you can use packages in the guest machine with cross system configuration
+        pkgs = import nixpkgs {
+          system = "x86_64-linux";
+          crossSystem.config = guestSystem;
+        };
+      in [
+        {nixpkgs.crossSystem.config = guestSystem;}
+        microvm.nixosModules.microvm
+        {
+          microvm = {
+            # you can choose what CPU will be emulated by qemu
+            cpu = "cortex-a53";
+            hypervisor = "qemu";
+          };
+          environment.systemPackages = with pkgs; [ cowsay htop ];
+          services.getty.autologinUser = "root";
+          system.stateVersion = "23.11";
+        }
+      ];
+    };
+
     nixosConfigurations = {
       bob = lib.nixosSystem {
         modules = [

systems/jeeves/runners/default.nix

@@ -1,6 +1,8 @@
 { pkgs, ... }:
 {
-  imports = [ ./nix_builder.nix ];
+  imports = [ 
+    ./nix_builder.nix 
+  ];
 
   users = {
     users.github-runners = {

systems/jeeves/runners/nix_builder.nix

@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ config, inputs, lib, ... }:
 
 with lib;
 
@@ -6,6 +6,8 @@ let
   vars = import ../vars.nix;
 in
 {
+  imports = [ inputs.microvm.nixosModules.microvm ];
+
   options.services.nix_builder.containers = mkOption {
     type = types.attrsOf (types.submodule ({ name, ... }: {
       options.enable = mkEnableOption "GitHub runner container";
@@ -81,3 +83,4 @@ in
     }
   ) config.services.nix_builder.containers;
 }
+