nix: interactive nixos vm

This is useful for quickly spinning up an ephemeral hakurei environment for testing changes or reproducing vm test failures.

Signed-off-by: Ophestra <cat@gensokyo.uk>

test/interactive/hakurei.nix

@@ -0,0 +1,25 @@
+{ pkgs, ... }:
+{
+  environment.hakurei = {
+    enable = true;
+    stateDir = "/var/lib/hakurei";
+    users.alice = 0;
+    apps = {
+      "cat.gensokyo.extern.foot.noEnablements" = {
+        name = "ne-foot";
+        identity = 1;
+        shareUid = true;
+        verbose = true;
+        share = pkgs.foot;
+        packages = [ pkgs.foot ];
+        command = "foot";
+        capability = {
+          dbus = false;
+          pulse = false;
+        };
+      };
+    };
+
+    extraHomeConfig.home.stateVersion = "23.05";
+  };
+}