use_virtualenv can't find venv/bin?

[zkurtz]

Context: On OSX with a virtualenv named "venv" and an anaconda installation in the background (outside of venv)

Problem: Importing my python module as reticulate::import("mymodule") was complaining about not being able to find matplotlib even after running use_virtualenv("/Users/me/mypackage/venv"). This problem occurred in Rstudio but did not occur from a terminal R session initiated inside of the activate virtual environment.

Temporary solution: Basically the same as suggested in #367, which is to tell reticulate to look inside of venv/bin by updating the system PATH before loading the library:

vbin = "/Users/me/mypackage/venv/bin"
Sys.setenv(PATH= paste(vbin,Sys.getenv()["PATH"],sep=":"))
library(reticulate) 

[kevinushey]

Can you run py_config() to confirm that reticulate was indeed using the virtual environment as you expected?

[zkurtz]

Running py_config() showed that it was pointing to a random conda environment. I don't see how my virtualenv could have become associated with that conda env. Anyway, I removed that conda env and now my virtualenv works again with use_virtualenv.