In Julia 1.7 and onward, the registry download is a single tarball, and the packages are read directly from it. In the future, it's likely only the diff is goin

In Julia 1.7 and onward, the registry download is a single tarball, and the packages are read directly from it. In the future, it's likely only the diff is going to be downloaded. These things are being improved, but it takes time - it also takes longer time than other languages since Julia have relatively less devpower than e.g. Rust.