"core project" is a nebulous term. Stuff is in that repo when it doesn't make sense to break it off as a crate; and a lot of our code is broken off as a crate.

"core project" is a nebulous term. Stuff is in that repo when it doesn't make sense to break it off as a crate; and a lot of our code is broken off as a crate. But yes, the servo team rarely hacks directly on the C++ components. (we hack very often on Rust out of tree things though)