Hugo
Hugo is a static site generator written in Go.
Your entire site becomes a Go module, from what I can tell.
Maybe useful links:
Sections
https://gohugo.io/content-management/sections/
From the docs:
A section is a top-level content directory, or any content directory with an _index.md file. A content directory with an _index.md file is also known as a branch bundle. Section templates receive one or more page collections in context.
Top level directories without an _index.md are also sections.