python requirements text files can in fact depend on each other due to
the fact that you can pass pip install arguments right into your
requirements.txt file. The trick is to just prefix the file with a
-r flag, just like you would if you were installing it with
Lets create two requirements files in a new directory to play with.
mkdir requirements-nest cd requirements-nest touch requirements.txt requirements_dev.txt
Then add the following to each requirements file.
# requirements.txt kedro[pandas.ParquetDataSet]
# requirements_dev.txt -r requirements.txt ipython
Installing requirements_dev.txt will install both ipython and pandas since it includes the base requirements file.
# this will install only pandas pip install -r requirements.txt # this will install both ipython and pandas pip install -r requirements_dev.txt
This is covered in the pip user guide, but it is not obvious that this can be done in a requirements.txt file.