freeroute : popular PCB routing and autorouting program ( http://freerouting.net/ )
icglue : Tcl-Library for scripted HDL generation ( https://icglue.org/ )
verible : SystemVerilog parser, style-linter, and formatter ( HOMEPAGE=" )
yosys : Framework for Verilog RTL synthesis ( http://www.clifford.at/yosys/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a xdch47
For Paludis use this rsync : rsync://gentoo.zugaina.org/xdch47-portage
If you have a problem : ycarus(-at-)zugaina.org