I cannot package this binary into my app, because the binary cannot be codesigned by XCode.
This works on other binaries and files, so there must be an issue specifically around the binaries that pkg creates.

To reproduce, create a simple index.js with console.log('Hello world').

pkg -t node7-darwin index.js -o test

The resulting binary cannot be code signed.

$ codesign -vvvv --force --sign '<apple developer identity>' ./test
./test: main executable failed strict validation