anchor.diff:  
   rustPlatform.buildRustPackage rec {
     pname = "cargo-make";
  -  version = "0.19.1";
  +  version = "0.19.2";
   
     src =
       let
  
positive.code: 
    buildInputs = stdenv.lib.optionals stdenv.isDarwin [ Security ];
  
    cargoSha256 = "0j7gyg6l428gypjpfgdz082vz8m86cx1wy2r47az3sc3skl6dhkq";
  
    # Some tests fail because they need network access.
    # However, Travis ensures a proper build.
  
negative.code:         owner = "sagiegurari";
          repo = pname;
          rev = version;
          sha256 = "175cflcm9k81fpp2pxz4hcaf8v3i7jqc9gcr4flnsqxjrh22vymp";
        };
        cargo-lock = fetchurl {
          url = "https://gist.githubusercontent.com/xrelkd/e4c9c7738b21f284d97cb7b1d181317d/raw/f1e6360acfbe5ae573f8f31a82a5c881a6f0ed68/cargo-make-Cargo.lock";
          sha256 = "004dx4gyby5smpvawqv946mambcg59zq6n8h89hz61mxkh7frmh4";
        };
      in
      runCommand "cargo-make-src" {} ''
  