Yay, this update fixes it! Thanks!

BZ#2138290 After upgrade, "Neither Libreswan nor strongSwan were found" , because 'ipsec --version' -> 'Libreswan ', not ' Libreswan '.

On which distro are you? We tested this against centos stream and it built fine, if your distro doesn't have python 3.8 it wont build as the requirements for lutris changed last patch

Been testing it since last weekend, no issues