This will remove debian/buster yosys however getting the build dependencies is quick and easy enough.
As the ordinary user, the following instructions can be followed
-(<http://www.clifford.at/yosys/download.html>)
+(<https://github.com/YosysHQ/yosys>)
cd ~
- git clone https://github.com/cliffordwolf/yosys.git
+ git clone https://github.com/YosysHQ/yosys
cd yosys
git checkout 049e3abf9baf795e69b9ecb9c4f19de6131f8418
make config-clang