Mismatched APT Dependencies

I have Synergy installed on Ubuntu 18.04 (this is not the new version 2, fwiw). Apparently, it has a requirement of libcurl3. However, the machine also runs as a hypervisor and I need to use libguestfs-tools to access disk images which requires a different version of curl. So, when I run apt install libguestfs-tools, it tries to remove both libcurl3 and synergy. I have stopped it thus far, but am hoping that there might be a way to isolate one or the other into a sandbox or some other alternative method to be able to have both installed simultaneously. Apologies if this is a duplicate, but I wasn't sure how to phrase the question.