How do you replicate a virtualenv?

Question

I just started using virtualenv in python.

I'm installing several package(?) using pip on the virtualenv.

Is there a record what packages are installed in a virtualenv so that I can replicate the same environment in a different machine?

Answer 1

On the first virtual env:

pip freeze > requirements.txt

On the second:

pip install -r requirements.txt

Easy!

Answer 2

Another approach is to make your virtualenv relocatable and then recursively copy it.

virtualenv --relocatable "$path_to_existing_virtual_env"
cp -r "$path_to_existing_virtual_env" "$path_to_duplicate_virtual_env"