nixpkgs/overlays/modemmanager.nix

   1 final: prev: {
   2   #libqmi = final.callPackage ../pkgs/libqmi.nix {};
   3   modemmanager-1-18 = final.callPackage ../pkgs/modemmanager-1-18.nix {};
   4   modemmanager-1-20-4 = final.callPackage ../pkgs/modemmanager-1-20-4.nix {};
   5 }