added vm build script

justfile

@@ -35,7 +35,7 @@ test TYPE="nix" SYSTEM="desktop":
       ;;
   esac
 
-# Build the nix expression and hydrate the results directory
+# Build the nix expression and hydrate the results directory - pass VM flag to build a VM
 build TYPE="nix" SYSTEM="desktop":
   #!/usr/bin/env bash
   set -euo pipefail
@@ -60,8 +60,24 @@ build TYPE="nix" SYSTEM="desktop":
       nix build --dry-run .#homeConfigurations."workstation".config.home-manager.build.toplevel -L
       exit 0
       ;;
+    "vm")
+      if [ "{{SYSTEM}}" = "desktop" ] || [ "{{SYSTEM}}" = "server" ] || [ "{{SYSTEM}}" = "wsl" ] || [ "{{SYSTEM}}" = "laptop" ]; then
+        echo "Building VM for {{SYSTEM}}..."
+        nixos-rebuild build-vm --flake .#{{SYSTEM}}
+        result/bin/run-{{SYSTEM}}-vm
+        exit 0
+      else
+        echo "Error: Unknown argument - '{{SYSTEM}}'"
+        echo "Use one of:"
+        echo "  desktop"
+        echo "  server"
+        echo "  laptop"
+        echo "  wsl"
+        exit 1
+      fi
+      ;;
     *)
-      echo "Invalid usage: {{TYPE}}.";
+      echo "Invalid usage: {{TYPE}}."
       echo "Use one of:"
       echo "  nixos"
       echo "  home"