main.workflow
.
I get
Error: Command 'run' doesn't exist.
Type 'popper --help' for more.
The most similar commands are: run, version
No module named 'pwd'
Good First Issue
here: https://github.com/systemslab/popper/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22