anchor.diff: -{ stdenv, rustPlatform, fetchFromGitHub, pkgconfig, openssl, curl
  -, Security
  +{ stdenv, rustPlatform, fetchFromGitHub, pkgconfig, makeWrapper, openssl, curl
  +, nix, Security
   }:
   
   rustPlatform.buildRustPackage rec {
  
positive.code:     sha256 = "05fqfwz34n4ijw7ydw2n6bh4bv64rhks85cn720sy5r7bmhfmfa8";
    };
    cargoSha256 = "045qm7cyg3sdvf22i8b9cz8gsvggs5bn9xz8k1pvn5gxb7zj24cx";
    nativeBuildInputs = [ pkgconfig ];
    buildInputs = [ openssl curl ]
      ++ stdenv.lib.optional stdenv.isDarwin Security;
  
  
negative.code:     cp ./command-not-found.sh $out/etc/profile.d/command-not-found.sh
      substituteInPlace $out/etc/profile.d/command-not-found.sh \
        --replace "@out@" "$out"
      wrapProgram $out/bin/nix-index \
        --prefix PATH : "${stdenv.lib.makeBinPath [ nix ]}"
    '';
  
    meta = with stdenv.lib; {
  