The default gems have not been installed yet in the build directory, bundled gems depending on them can not work. As those dependencies should be usable there even without rubygems, make temporary gemspec files without the dependencies, and use them in the build directory.
Make dependency-free gemspec files
The default gems have not been installed yet in the build directory,
bundled gems depending on them can not work. As those dependencies
should be usable there even without rubygems, make temporary gemspec
files without the dependencies, and use them in the build directory.