Update z3 to 4.11.2 (was 4.8.8) and refactored to use version only in one place. In future the desired version numbers could perhaps be read from a configuration file?
Now tries to use python3 if python is not found. I am not sure this works on all platforms we target as it needs which to be in the path (this is /usr/bin/which on macOS). Another solution is probably more elegant, this was the first reasonable one I found.
which
to be in the path (this is/usr/bin/which
on macOS). Another solution is probably more elegant, this was the first reasonable one I found.