The part models are open source so theoretically you could 3d print plus solder some electronics to make one. I've heard of people doing that to make usb ports that also have wireless mouse dongles integrated so they don't use up a port. I've never tried Pop OS on mine (I could temporarily dual boot mine to let you know if stuff works but I'm guessing someone who dailys it or has at least tried it will respond later) but typically unsupported/community supported distros work except for the fingerprint reader and minor bugs. I daily fedora which has been mostly fine with a slight issue that turned out to be a kernel bug that had nothing to do with framework and (I think) is patched now.