I copied these extensions from my TCL11.1/tce/optional to TCL12.0/tce/optional and they work well:
gtk2.tcz
fuse.tcz
iproute2
iptables
openresolv
db
libdb
wireguard-tools
As I was expecting, I see that the linux kernel team now provides the wireguard kernel module:
TCL12$ tce-load -wi ipv6-netfilter-KERNEL
TCL12$ sudo modprobe ipv6
TCL12$ sudo modprobe wireguard # this works because the wireguard module is included in modules64.gz. Awesome!
I expect that by the time TCL12 is released, the TCL team will have separated out the wireguard kernel module into its own extension (wireguard-5.10.3-tinycore64.tcz). If that's the case, no changes will be needed to wireguard-tools.tcz.dep. If, on the other hand, the wireguard kernel module is part of TCL12 base system, then wireguard-KERNEL.tcz should be removed from wireguard-tools.tcz.dep.
P.S. This post was made from TCL12 using firefox, a wifi connection, and a wireguard VPN connection.