don't use flake.nix to run vms

config/xonsh/aliases.py

@@ -50,8 +50,14 @@ def _vm(args):
     vm_path = Path(f"/etc/nixos/hosts/virtual-machines/{vm_name}")
     if vm_path.exists():
         c = colors.Colors
+
+        if (vm_path / "flake.nix").exists():
+            build_vm_args.extend(["--flake", f"{vm_path}#nixos"])
+        elif (vm_path / "default.nix").exists():
+            build_vm_args.extend(["-I", f"nixos-config={vm_path}/default.nix", "--no-flake"])
+
         print(f"{c.BLUE}Building virtual machine {c.YELLOW}{vm_name}{c.END}")
-        run(["nixos-rebuild", "build-vm", "-I", "nixos-config=./default.nix", *build_vm_args, "--no-flake"], cwd=vm_path)
+        run(["nixos-rebuild", "build-vm", *build_vm_args], cwd=vm_path)
         print(f"{c.BLUE}Starting virtual vachine {c.YELLOW}{vm_name}{c.END}")
         run(["./result/bin/run-nixos-vm"], cwd=vm_path)
         print(f"{c.BLUE}Virtual machine {c.YELLOW}{vm_name} {c.BLUE}has {c.RED}stopped.{c.END}")

hosts/virtual-machines/cosmic/default.nix

@@ -0,0 +1,32 @@
+{
+  pkgs,
+  lib,
+  ...
+}:
+let
+  packages = with pkgs; [ fastfetch ];
+in
+{
+  services = {
+    desktopManager.cosmic.enable = true;
+    displayManager.cosmic-greeter.enable = true;
+  };
+
+  virtualisation.vmVariant.virtualisation = {
+    memorySize = 8192;
+    cores = 6;
+  };
+
+  environment.systemPackages = lib.lists.unique (packages);
+
+  nix = {
+    settings = {
+      substituters = [
+        "https://cosmic.cachix.org"
+      ];
+      trusted-public-keys = [
+        "cosmic.cachix.org-1:Dya9IyXD4xdBehWjrkPv6rtxpmMdRel02smYzA85dPE="
+      ];
+    };
+  };
+}

hosts/virtual-machines/cosmic/flake.nix

@@ -0,0 +1,37 @@
+{
+  description = "System Configuration @ cswimr 2024";
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    cosmic.url = "github:lilyinstarlight/nixos-cosmic";
+  };
+  outputs =
+    {
+      self,
+      nixpkgs,
+      cosmic,
+      ...
+    }@inputs:
+    let
+      user = "nixos";
+      system = "x86_64-linux";
+    in
+    {
+      nixosConfigurations = {
+        nixos = nixpkgs.lib.nixosSystem {
+          system = system;
+          specialArgs = {
+            inherit inputs;
+            system = system;
+            hostname = "nixos";
+            user = user;
+          };
+          modules = [
+            # imports
+            ../common.nix
+            ./default.nix
+            cosmic.nixosModules.default
+          ];
+        };
+      };
+    };
+}

hosts/virtual-machines/gnome/default.nix

@@ -5,7 +5,7 @@ let
 in
 {
   imports = [
-    ../template.nix
+    ../common.nix
     #../../../nixos/shell.nix
   ];
 

hosts/virtual-machines/nixpkgs/default.nix

@@ -1,7 +1,7 @@
 { pkgs, ... }:
 {
   imports = [
-    ../template.nix
+    ../common.nix
     #../../../nixos/shell.nix
   ];
   environment.systemPackages = with pkgs; [ fastfetch ];