diff --git a/flake.nix b/flake.nix
index 001b24e..940ad84 100644
--- a/flake.nix
+++ b/flake.nix
@@ -40,8 +40,9 @@
     }:
     let
       inherit (builtins) mapAttrs attrValues;
-      inherit (lib.flake) eachDefaultSystem;
-      inherit (lib.my) attrsToList mkApp mkShellApp mkShellApp' inlineModules mkDefaultSystemsPkgs flakePackageOverlay;
+      inherit (lib) recurseIntoAttrs;
+      inherit (lib.flake) flattenTree eachDefaultSystem;
+      inherit (lib.my) attrsToList inlineModules mkDefaultSystemsPkgs flakePackageOverlay;
 
       # Extend a lib with extras that _must not_ internally reference private nixpkgs. flake-utils doesn't, but many
       # other flakes (e.g. home-manager) probably do internally.
@@ -136,6 +137,10 @@
     in
     # Stuff for each platform
     {
+      checks = flattenTree {
+        homeConfigurations = recurseIntoAttrs self.homes;
+      };
+
       devShell = pkgs.devshell.mkShell {
         env = attrsToList {
           # starship will show this
diff --git a/nixos/installer.nix b/nixos/installer.nix
index f99a9e4..515d437 100644
--- a/nixos/installer.nix
+++ b/nixos/installer.nix
@@ -40,6 +40,12 @@ in
     # plenty of free memory.
     boot.kernel.sysctl."vm.overcommit_memory" = "1";
 
+    # This should be overridden by whatever boot mechanism is used
+    fileSystems."/" = mkDefault {
+      device = "none";
+      fsType = "tmpfs";
+    };
+
     environment.systemPackages = with pkgs; [
       # We disable networking.useDHCP, so bring this in for the user
       dhcpcd