I'm planning on setting up a new personal OpenBSD-current system by means of installing the latest OpenBSD snapshot, and I would want it to look more or less similar to my existing OpenBSD-current system in terms of local changes made to the files under /etc without actually copying the /etc directory over to the new system (it also contains configuration that the new system should not use, and other things that should be different).

What is the easiest way to compare my old setup with that of a pristine system so that I manually may go through and set up the new machine? I would like to compile a list of individual base system services etc. that I need to configure after installing the new OpenBSD-system, just as a way of not accidentally leaving things out, like setting up a mail alias for root.

I'm planning on setting up a new personal OpenBSD-current system by means of installing the latest OpenBSD snapshot, and I would want it to look more or less similar to my existing OpenBSD-current system in terms of local changes made to the files under /etc without actually copying the /etc directory over to the new system (it also contains configuration that the new system should not use, and other things that should be different).

What is the easiest way to compare my old setup with that of a pristine system so that I manually may go through and set up the new machine? I would like to compile a list of individual base system services etc. that I need to configure after installing the new OpenBSD system, just as a way of not accidentally leaving things out, like setting up a mail alias for root.