let
moz_overlay = import (builtins.fetchTarball https://github.com/mozilla/nixpkgs-mozilla/archive/master.tar.gz);
nixpkgs = import <nixpkgs> {
overlays = [ moz_overlay ];
};
ruststable = (nixpkgs.latest.rustChannels.stable.rust.override {
extensions = [ "rust-src" "rust-analysis" ];}
);
in
with nixpkgs;
stdenv.mkDerivation {
name = "rust";
buildInputs = [ rustup ruststable];
}