How to customize a requirements.txt for multiple environments?

Question

I have two branches, Development and Production. Each has dependencies, some of which are different. Development points to dependencies that are themselves in development. L

Answer 1

If your requirement is to be able to switch between environments on the same machine, it may be necessary to create different virtualenv folders for each environment you need to switch to.

python3 -m venv venv_dev
source venv_dev/bin/activate
pip install -r pip/common.txt
pip install -r pip/dev.txt
exit
python3 -m venv venv_prod
source venv_prod/bin/activate
pip install -r pip/common.txt
exit
source venv_dev/bin/activate
# now we are in dev environment so your code editor and build systems will work.

# let's install a new dev package:
# pip install awesome
# pip freeze -r pip/temp.txt
# find that package, put it into pip/dev.txt
# rm pip/temp.txt

# pretty cumbersome, but it works.