bump holo-nixpkgs to an unmerged branch

config.nix

@@ -36,14 +36,14 @@ echo "<your publishing script here>"
   github = rec {
    # can be any github ref
    # branch, tag, commit, etc.
-   ref = "2e1598063d89bea7d2ecda3a3c717fea5ee7c70e";
+   ref = "321bad660bb9d30e43ffccb740c396365b3b3930";
 
    # the sha of what is downloaded from the above ref
    # note: even if you change the above ref it will not be redownloaded until
    #       the sha here changes (the sha is the cache key for downloads)
    # note: to get a new sha, get nix to try and download a bad sha
    #       it will complain and tell you the right sha
-   sha256 = "0sp7aiwqpmfx4flp1awxjmgqzzj9gbi1c02iyfa5kkw80i3nlnyf";
+   sha256 = "0z66j5sc49briaw2b2fyi8gml8gdkaaafpi18fidn7sd9nyavk92";
 
    # the github owner of the holonix repo
    owner = "Holo-Host";