anchor.diff:    libz-sys = attrs: {
       nativeBuildInputs = [ pkg-config ];
       buildInputs = [ zlib ];
  -    extraLinkFlags = ["-L${zlib.out}/lib"];
  +    extraLinkFlags = [ "-L${zlib.out}/lib" ];
     };
   
     curl-sys = attrs: {
       nativeBuildInputs = [ pkg-config ];
       buildInputs = [ zlib curl ];
       propagatedBuildInputs = [ curl zlib ];
  -    extraLinkFlags = ["-L${zlib.out}/lib"];
  +    extraLinkFlags = [ "-L${zlib.out}/lib" ];
     };
   
     dbus = attrs: {
  
positive.code: { lib, stdenv, pkg-config, curl, darwin, libiconv, libgit2, libssh2,
    openssl, sqlite, zlib, dbus, dbus-glib, gdk-pixbuf, cairo, python3,
    libsodium, postgresql, gmp, foundationdb, capnproto, nettle, clang,
    llvmPackages, linux-pam, ... }:
  
  let
    inherit (darwin.apple_sdk.frameworks) CoreFoundation Security;
  
negative.code: 
    rink = attrs: {
      buildInputs = [ gmp ];
      crateBin = [{ name = "rink"; path = "src/bin/rink.rs"; }];
    };
  
    security-framework-sys = attr: {
  