diff --git a/flake.nix b/flake.nix
index 0eba7e7..8d05c70 100644
--- a/flake.nix
+++ b/flake.nix
@@ -50,11 +50,11 @@
         packages.slides = pkgs.stdenvNoCC.mkDerivation rec {
           name = "slides";
 
-          src = ./.; # because slides/assets is a symlink
+          src = ./slides;
+          assets = ./assets;
 
-          npmRoot = "slides";
           npmDeps = pkgs.fetchNpmDeps {
-            src = "${src}/slides";
+            inherit src;
             hash = "sha256-GJ10or/LERFOsBG6CqnRFXnXSEZB7+0C5CV6t8X/Um8=";
           };
 
@@ -64,7 +64,9 @@
           ];
 
           buildPhase = ''
-            cd slides
+            rm assets
+            ln -s $assets assets
+
             npm run build
           '';