This is very useful:
I am building an application that comprises multiple repos. I continue to procrastinate on whether using multiple repos vs. a monorepo was a good idea but, an issue that I have (had) is the need to ensure that the repos' contents are using current|latest modules. GitHub can help.
Aside Even though I’m more proficient with Golang, I want to become more proficient in Rust and I contemplated trying to write the entire application in Rust.