diff --git a/artiq-full/example-user-env.nix b/artiq-full/example-user-env.nix
index bedc4f6..b4827c3 100644
--- a/artiq-full/example-user-env.nix
+++ b/artiq-full/example-user-env.nix
@@ -20,7 +20,8 @@ in
         ps.pandas
         ps.numpy
         ps.scipy
-        ps.numba
+        # our newer llvmlite conflicts with the one in nixpkgs (21.05), reenable after nixpkgs updates llvmlite
+        #ps.numba
         ps.bokeh
         matplotlib-qt
         # cirq is broken and doesn't build (as of 20.09.3281.06b11191834)
@@ -31,7 +32,7 @@ in
 
       artiq-full.openocd
       pkgs.gtkwave
-      #pkgs.spyder  # broken on 20.03
+      pkgs.spyder
       pkgs.R
     ];
   } "touch $out";