diff --git a/flake.nix b/flake.nix
--- a/flake.nix
+++ b/flake.nix
@@ -34,5 +34,13 @@
       # overlays or utility functions.
       overlays = { inherit localOverlay; };
       overlay = localOverlay;
+
+      # Flake specific additions to what is found in /etc/nix/nix.conf
+      # Add comm binary cache to avoid our pinned packages from needing
+      # to be built by any consumer
+      nixConfig = ''
+        extra-substituters = https://comm.cachix.org
+        extra-trusted-public-keys = comm.cachix.org-1:70RF31rkmCEhQ9HrXA2uXcpqQKGcUK3TxLJdgcUCaA4=
+      '';
     };
 }