cmd/hakurei/print: serialise array for ps

Wanted to do this for a long time, since the key is redundant. This also makes it easier to migrate to the new store interface.

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

test/configuration.nix

@@ -84,14 +84,14 @@
 
   virtualisation = {
     # Hopefully reduces spurious test failures:
-    memorySize = 4096;
+    memorySize = 8192;
 
     qemu.options = [
       # Need to switch to a different GPU driver than the default one (-vga std) so that Sway can launch:
       "-vga none -device virtio-gpu-pci"
 
       # Increase Go test compiler performance:
-      "-smp 8"
+      "-smp 16"
     ];
   };
 

test/test.py

@@ -56,7 +56,7 @@ def check_state(name, enablements):
     instances = json.loads(machine.succeed("sudo -u alice -i XDG_RUNTIME_DIR=/run/user/1000 hakurei --json ps"))
     if len(instances) != 1:
         raise Exception(f"unexpected state length {len(instances)}")
-    instance = next(iter(instances.values()))
+    instance = instances[0]
 
     command = f"{name}-start"
     if not (instance['container']['path'].startswith("/nix/store/")) or not (instance['container']['path'].endswith(command)):