has anyone seen an explanation of nix flakes that explains the design goals of flakes & the fundamental problems they're trying to solve before diving into the syntax?

i'm looking for something like:

* the goal of flakes is to let people define packages in an uncoordinated way without a central repository
* the problem is that coordinating dependencies: you could easily end up with an explosion where you end up installing 1000 versions of libc
* the way flakes address that problem is ???