Today I finally got graywolf and qflow running.
It’s available for download as a package from my OBS build repository:
https://build.opensuse.org/project/show/home:leviathanch:asic
The first glimpse of the transistormask of the RISC-V we’re going to tape our is here:

I’m using cliffords picorv32 which can be cloned from github:
https://github.com/cliffordwolf/picorv32