Conditions for Contributions to Whonix are not part of Whonix's license.
Any changes you pull into this source will be also licensed under GPL v3 or any later. Additionally you grant ENCRYPTED SUPPORT LP the right to re-license your work under a different license. If that is not acceptable, you can either fork this source under GPL v3 or any later or contact ENCRYPTED SUPPORT LP. Contact ENCRYPTED SUPPORT LP, if you require this source code under different license.