It should rather be called "unseen open source dependencies" instead of infrastructure. On that note though, would be interesting to see how open source projects are running their infrastructure.
Speaking about dependencies, I saw something on Github that I have not seeing before, "Dependents" in the "Graphs" section[0]. This says "No packages depend on this repository yet. We'll keep watching to see if any packages add this repository as a dependency." but I have yet come across any repository with dependencies or how to add that a repository is a dependency to another.
Anyone know what that is about?
[0] - https://github.com/ipfs/js-ipfs/network/dependents - http://i.imgur.com/USSLz3U.png