My main problem with Pip is that, if you include multiple requirements.txt files which declare exactly the same dependencies, then that's an error. If you don'

My main problem with Pip is that, if you include multiple requirements.txt files which declare exactly the same dependencies, then that's an error. If you don't control all the projects involved, this needs some quite convoluted inheritance chains to work around. I can't tell if this change will fix that.