diff --git a/packages/catalog/checks.nix b/packages/catalog/checks.nix
index 1dab997..d8c2c72 100644
--- a/packages/catalog/checks.nix
+++ b/packages/catalog/checks.nix
@@ -1,21 +1,32 @@
 { lib, ... }:
 
 {
-  perSystem = { config, ... }: {
-    catalog.depot = {
-      checks = lib.mapAttrs (name: check: {
-        description = "NixOS Test: ${name}";
-        actions = {
-          build = {
-            description = "Build this check.";
-            command = "nix build -L --no-link '${builtins.unsafeDiscardStringContext check.drvPath}^*'";
-          };
-          runInteractive = {
-            description = "Run interactive driver.";
-            command = lib.getExe check.driverInteractive;
-          };
+  perSystem = { config, pkgs, ... }: {
+    catalog = lib.mkMerge (lib.mapAttrsToList (name': check: let
+      simulacrum = lib.hasPrefix "simulacrum-" name';
+      name = lib.removePrefix "simulacrum-" name';
+      baseAttrPath = if simulacrum then
+        [ "cluster" "simulacrum" ]
+      else
+        [ "depot" "checks" ];
+    in lib.setAttrByPath (baseAttrPath ++ [ name ]) {
+      description = if simulacrum then
+        "Simulacrum Test: ${name}"
+      else
+        "NixOS Test: ${name}";
+      actions = {
+        build = {
+          description = "Build this check.";
+          command = "nix build -L --no-link '${builtins.unsafeDiscardStringContext check.drvPath}^*'";
         };
-      }) config.checks;
-    };
+        runInteractive = {
+          description = "Run interactive driver.";
+          command = if simulacrum then
+            "${pkgs.bubblewrap}/bin/bwrap --unshare-all --bind / / --dev-bind /dev /dev ${lib.getExe check.driverInteractive}"
+          else
+            lib.getExe check.driverInteractive;
+        };
+      };
+    }) config.checks);
   };
 }