anchor.diff:  
     libgit2-sys = attrs: {
       LIBGIT2_SYS_USE_PKG_CONFIG = true;
  -    buildInputs = [ pkgconfig openssl zlib libgit2 ];
  +    nativeBuildInputs = [ pkgconfig ];
  +    buildInputs = [ openssl zlib libgit2 ];
     };
   
     libsqlite3-sys = attrs: {
  -    buildInputs = [ pkgconfig sqlite ];
  +    nativeBuildInputs = [ pkgconfig ];
  +    buildInputs = [ sqlite ];
     };
   
     libssh2-sys = attrs: {
  -    buildInputs = [ pkgconfig openssl zlib libssh2 ];
  +    nativeBuildInputs = [ pkgconfig ];
  +    buildInputs = [ openssl zlib libssh2 ];
     };
   
     libdbus-sys = attrs: {
  -    buildInputs = [ pkgconfig dbus ];
  +    nativeBuildInputs = [ pkgconfig ];
  +    buildInputs = [ dbus ];
     };
   
     openssl = attrs: {
  
positive.code:   };
  
    libz-sys = attrs: {
      buildInputs = [ pkgconfig zlib ];
      extraLinkFlags = ["-L${zlib.out}/lib"];
    };
  
    curl-sys = attrs: {
      buildInputs = [ pkgconfig zlib curl ];
      propagatedBuildInputs = [ curl zlib ];
      extraLinkFlags = ["-L${zlib.out}/lib"];
    };
  
    dbus = attrs: {
      buildInputs = [ pkgconfig dbus ];
    };
  
    foundationdb-sys = attrs: {
  
negative.code:   };
  
    openssl-sys = attrs: {
      nativeBuildInputs = [ pkgconfig ];
      buildInputs = [ openssl ];
    };
  
    pq-sys = attr: {
      nativeBuildInputs = [ pkgconfig ];
      buildInputs = [ postgresql ];
    };
  
    rink = attrs: {
  