I was able to make it work.
Inside of my install directory (opt/nim-0.15.2/) I pulled the csources.
git clone --depth 1 https://github.com/nim-lang/csources
then moved the contents (except for c_code directory) up a level
mv [^c][^_]* ../
then ran the newly overwritten build.sh script from the install directory. .
.
Get Nimy with it ...pretty sure that's what Will Smith said.
