NixOS tests are pretty cool! &#xA; I&rsquo;ve been fixing an issue where, if you do a deployment to a remote machine (with nixos-rebuild switch --target-host=foo ), and the connection would get broken off during the &lsquo;switch&rsquo;, the switch would be aborted - worst-case leading to that connection not getting restored. &#xA; &#xA; I initially tested this manually, with the Raspberry Pi I…