diff --git a/overlays/nixpkgs/firefox.nix b/overlays/nixpkgs/firefox.nix
index bf3b1b3..cc61d68 100644
--- a/overlays/nixpkgs/firefox.nix
+++ b/overlays/nixpkgs/firefox.nix
@@ -1,78 +1,76 @@
 # Shamelessly stolen most parts from https://github.com/schizofox/schizofox
 
-{ pkgs, inputs, lib, ... }: final: prev: let
-  mkNixPak = inputs.nixpak.lib.nixpak {
-    inherit (pkgs) lib;
-    inherit pkgs;
-  };
-in {
-  firefox-esr = mkNixPak {
-    config = { sloth, ... }: {
-      app.package = pkgs.firefox-esr;
-      flatpak.appId = "org.mozilla.firefox";
-      dbus.policies = {
-        "org.mozilla.Firefox" = "own";
-        "org.mozilla.Firefox.*" = "own";
-        "org.a11y.Bus" = "talk";
-        "org.gnome.SessionManager" = "talk";
-        "org.freedesktop.ScreenSaver" = "talk";
-        "org.gtk.vfs.*" = "talk";
-        "org.gtk.vfs" = "talk";
-        "org.freedesktop.Notifications" = "talk";
-        "org.freedesktop.portal.FileChooser" = "talk";
-        "org.freedesktop.portal.Settings" = "talk";
-        "org.mpris.MediaPlayer2.firefox.*" = "own";
-        "org.mozilla.firefox.*" = "own";
-        "org.mozilla.firefox_beta.*" = "own";
-        "org.freedesktop.DBus" = "talk";
-        "org.freedesktop.DBus.*" = "talk";
-        "ca.desrt.dconf" = "talk";
-        "org.freedesktop.portal.*" = "talk";
-        "org.freedesktop.NetworkManager" = "talk";
-        "org.freedesktop.FileManager1" = "talk";
-      };
+{ pkgs, ... }: final: prev: {
+  firefox-esr = let
+    sandboxed-firefox-esr = pkgs.mkNixPak {
+      config = { sloth, ... }: {
+        app.package = pkgs.firefox-esr;
+        flatpak.appId = "org.mozilla.firefox";
+        dbus.policies = {
+          "org.mozilla.Firefox" = "own";
+          "org.mozilla.Firefox.*" = "own";
+          "org.a11y.Bus" = "talk";
+          "org.gnome.SessionManager" = "talk";
+          "org.freedesktop.ScreenSaver" = "talk";
+          "org.gtk.vfs.*" = "talk";
+          "org.gtk.vfs" = "talk";
+          "org.freedesktop.Notifications" = "talk";
+          "org.freedesktop.portal.FileChooser" = "talk";
+          "org.freedesktop.portal.Settings" = "talk";
+          "org.mpris.MediaPlayer2.firefox.*" = "own";
+          "org.mozilla.firefox.*" = "own";
+          "org.mozilla.firefox_beta.*" = "own";
+          "org.freedesktop.DBus" = "talk";
+          "org.freedesktop.DBus.*" = "talk";
+          "ca.desrt.dconf" = "talk";
+          "org.freedesktop.portal.*" = "talk";
+          "org.freedesktop.NetworkManager" = "talk";
+          "org.freedesktop.FileManager1" = "talk";
+        };
 
-      gpu.enable = true;
-      gpu.provider = "bundle";
-      fonts.enable = true;
-      locale.enable = true;
-      etc.sslCertificates.enable = true;
+        gpu.enable = true;
+        gpu.provider = "bundle";
+        fonts.enable = true;
+        locale.enable = true;
+        etc.sslCertificates.enable = true;
 
-      bubblewrap = let
-        envSuffix = envKey: sloth.concat' (sloth.env envKey);
-      in {
-        network = true;
+        bubblewrap = let
+          envSuffix = envKey: sloth.concat' (sloth.env envKey);
+        in {
+          network = true;
 
-        bind.rw = [
-          (sloth.concat' sloth.xdgCacheHome "/fontconfig")
-          (sloth.concat' sloth.xdgCacheHome "/mesa_shader_cache")
-          (sloth.concat [
-            (sloth.env "XDG_RUNTIME_DIR")
-            "/"
-            (sloth.envOr "WAYLAND_DISPLAY" "no")
-          ])
-          "/tmp/.X11-unix"
-          (sloth.envOr "XAUTHORITY" "/no-xauth")
+          bind.rw = [
+            (sloth.concat' sloth.xdgCacheHome "/fontconfig")
+            (sloth.concat' sloth.xdgCacheHome "/mesa_shader_cache")
+            (sloth.concat [
+              (sloth.env "XDG_RUNTIME_DIR")
+              "/"
+              (sloth.envOr "WAYLAND_DISPLAY" "no")
+            ])
+            "/tmp/.X11-unix"
+            (sloth.envOr "XAUTHORITY" "/no-xauth")
 
-          (envSuffix "XDG_RUNTIME_DIR" "/at-spi/bus")
-          (envSuffix "XDG_RUNTIME_DIR" "/gvfsd")
-          (envSuffix "XDG_RUNTIME_DIR" "/pulse")
-          (envSuffix "XDG_RUNTIME_DIR" "/doc")
-          (envSuffix "XDG_RUNTIME_DIR" "/dconf")
+            (envSuffix "XDG_RUNTIME_DIR" "/at-spi/bus")
+            (envSuffix "XDG_RUNTIME_DIR" "/gvfsd")
+            (envSuffix "XDG_RUNTIME_DIR" "/pulse")
+            (envSuffix "XDG_RUNTIME_DIR" "/doc")
+            (envSuffix "XDG_RUNTIME_DIR" "/dconf")
 
-          (sloth.concat [sloth.xdgConfigHome "/.mozilla"])
-        ];
+            (sloth.concat [sloth.xdgConfigHome "/.mozilla"])
+          ];
 
-        bind.ro = [
-          "/etc/resolv.conf"
-          (sloth.concat' sloth.xdgConfigHome "/gtk-2.0")
-          (sloth.concat' sloth.xdgConfigHome "/gtk-3.0")
-          (sloth.concat' sloth.xdgConfigHome "/gtk-4.0")
-          (sloth.concat' sloth.xdgConfigHome "/dconf")
-          "/etc/localtime"
-          "/sys/bus/pci"
-        ];
+          bind.ro = [
+            "/etc/resolv.conf"
+            (sloth.concat' sloth.xdgConfigHome "/gtk-2.0")
+            (sloth.concat' sloth.xdgConfigHome "/gtk-3.0")
+            (sloth.concat' sloth.xdgConfigHome "/gtk-4.0")
+            (sloth.concat' sloth.xdgConfigHome "/dconf")
+            "/etc/localtime"
+            "/sys/bus/pci"
+          ];
+        };
       };
     };
-  }.config.script;
+  in
+    sandboxed-firefox-esr.config.env;
 }