We’re sharing details about Glean, Meta’s open source system for collecting, deriving, and working with facts about source code. In this blog post we’ll talk about why a system like Glean is important, explain the rationale for Glean’s design, and run through some of the ways we’re using Glean to supercharge our developer tooling at Meta. In August 2021 we open-sourced our code indexing system Glean. Glean collects information about source code and provides it to developer tools through an effic...