5cd6c65054
Nixpkgs' channel currently can't move forward so long as there is a trace in evaluating the top-level arguments. Which means that it isn't possible to add a warning message to warn users of future package removal. So the only way forward appears to be just removing the alias altogether. (cherry picked from commit b4133ebc17c2742a76d912f4f0bf46719bc7800e)
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.