There is heaps of vagueness in both the Open Source Definition and Free Software Definition, especially about copyleft. See, e.g.: https://writing.kemitchell.

There is heaps of vagueness in both the Open Source Definition and Free Software Definition, especially about copyleft. See, e.g.: https://writing.kemitchell.com/2018/11/05/OSD-Copyleft-Regulation.html https://writing.kemitchell.com/2018/11/05/OSD-Copyleft-Regul... https://blog.licensezero.com/2018/09/14/free-to-take-freedom.html https://blog.licensezero.com/2018/09/14/free-to-take-freedom... There are heaps of disputes about whether licenses qualify. Check OSI's license-review list, or Twitter, or, frankly, HN.