@carmenbianca Which license do you loathe?
There are many fine masterpieces to choose from;
https://www.gnu.org/licenses/agpl-3.0.en.html
https://www.gnu.org/licenses/gpl-3.0.en.html
https://www.gnu.org/licenses/lgpl-3.0.en.html
https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html

>virality thing
The freedom does not spread via viral action to merely aggregated software.

You must explicitly choose to take a piece and if you do, the freedom grows just like a spider plant.

>one or two vague sentences.
The freedom depends on several paragraphs that are quite clear and not in any way vague.