Created attachment 185068 [details] Correct zstd license Based on my suggestion to add Facebook's PATENTS v2 grant to the framework, here's a patch that corrects the license for zstd accordingly.
Zstd is now dual-licensed under BSD and GPLv2. https://github.com/facebook/zstd#license
archivers/zstd has been updated to 1.3.1 which upstream clarified the new licenses.