I got curious how much the Python package set increased in size over time, so I decided to collect the data and plot it.
Generated using https://gist.github.com/FRidh/17fd13f47c8d03e1055b7ef142311429
Back in 2015 there were actually more packages available than the graph shows. Back then many packages were in
all-packages.nix instead. Since then, packages that belong in the Python set were moved there, bindings were added, and of course new packages were added.