Build failure of the Moore package

[PiotrZierhoffer]

I skip the moore-linux build, because of the non-trivial fail of the CI. Right now it requires manual building of LLVM.

Sample failure: https://github.com/hdl/conda-eda/runs/5024242928?check_suite_focus=true

I had a super fast attempt to address it here, but of course it's not enough: #162