Working on a built-in test virtual machine

Author: Thesola10

flake.nix

@@ -8,5 +8,18 @@
     let pkgs = import nixpkgs { inherit system; };
     in
     { packages.default = pkgs.callPackage ./default.nix {};
+      packages.vm = self.nixosConfigurations.testbox.config.system.build.vm;
+
+      nixosConfigurations."testbox" =
+        nixpkgs.lib.nixosSystem {
+          inherit system;
+          modules = [
+            ./vm.nix
+            { nixpkgs.overlays = [
+                (self: super: { paperwm = self.packages.${system}.default; })
+              ];
+            }
+          ];
+        };
     });
 }

vm.nix

@@ -0,0 +1,47 @@
+{ pkgs, config, lib, ... }:
+
+{
+  ### Make PaperWM available in system environment
+  environment.systemPackages = with pkgs;
+  [ paperwm
+  ];
+
+  ### Set graphical session to auto-login GNOME
+  services.xserver =
+  { enable = true;
+    displayManager.autoLogin =
+    { enable = true;
+      user = "user";
+    };
+    desktopManager.gnome.enable = true;
+  };
+
+  ### Set dconf to enable PaperWM out of the box
+  programs.dconf =
+  { enable = true;
+    profiles."user".databases = [
+      { settings =
+        { "org/gnome/shell" =
+          { enabled-extensions = [ "[email protected]" ];
+          };
+        };
+      }
+    ];
+  };
+
+  ### Set default user
+  users.users."user" =
+  { isNormalUser = true;
+    createHome = true;
+    home = "/home";
+    description = "PaperWM test user";
+    extraGroups = [ "wheel" ];
+    password = "paperwm";
+  };
+
+  ### No-password sudo
+  security.sudo =
+  { enable = true;
+    extraConfig = "%wheel ALL=(ALL) NOPASSWD: ALL";
+  };
+}