Pip is nice in that you can install packages individually to get around some version conflicts. But with conda and npm and CRAN I have always found my stuck without being able to install dependencies after 15 minutes of mucking.

Its rare that somebody has left the equivalent of the output of a `pip freeze` around to document their state.

With snakemake, I abandoned conda and went with pip in a venv, without filing an issue. Perhaps it was user error from being unfamiliar with conda, but I did not have more time to spend on the issue, much less doing the research to be able to file a competent issue and follow up later on.