Add a role for installing bubblewrap.

nix/configuration/configuration.nix

@@ -22,6 +22,7 @@ in
     ./roles/base
     ./roles/bluetooth
     ./roles/boot
+    ./roles/bubblewrap
     ./roles/build_in_ram
     ./roles/chromecast
     ./roles/chromium

nix/configuration/hosts/odo/default.nix

@@ -82,6 +82,7 @@
     me.ares.enable = true;
     me.base.enable = true;
     me.bluetooth.enable = true;
+    me.bubblewrap.enable = true;
     me.build_in_ram.enable = true;
     me.chromecast.enable = true;
     me.chromium.enable = true;

nix/configuration/hosts/quark/default.nix

@@ -76,6 +76,7 @@
     me.ares.enable = true;
     me.base.enable = true;
     me.bluetooth.enable = true;
+    me.bubblewrap.enable = true;
     me.build_in_ram.enable = true;
     me.chromecast.enable = true;
     me.chromium.enable = true;

nix/configuration/roles/bubblewrap/default.nix

@@ -0,0 +1,25 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  imports = [ ];
+
+  options.me = {
+    bubblewrap.enable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      example = true;
+      description = "Whether we want to install bubblewrap.";
+    };
+  };
+
+  config = lib.mkIf config.me.bubblewrap.enable {
+    environment.systemPackages = with pkgs; [
+      bubblewrap
+    ];
+  };
+}