[dgl]

The very site the (downvoted) parent references points out that WTFPL is actually a perfectly fine licence: https://tldrlegal.com/license/do-wtf-you-want-to-public-lice...

See also GNU's site: https://www.gnu.org/licenses/license-list.html#WTFPL Fair enough that they don't recommend it, but they believe it is GPL compatible.