Magic to prevent refreshing package archives failure
Workflow automatically downloads package archives and stores them here.
NOTE: It will refresh every 1 hour.
While sandboxing in Emacs package development, we will most likely call
package-refresh-contents multiple times due to the newly set up environment.
Eask already prevents you from doing that unless it's needed, but we might still
encounter 404 from the archive's server (elpa, melpa, etc). This is generally
because the server has temporarily blocked your IP to prevent a user from
continuously requesting the archive content file within a short amount of time.
Then you would have to wait for a few minutes (time depends on the archive server)
to have your IP unlock from the archive server.
Here is the archives that comes into play! Eask tries to save you from this
condition; it will download these archive-contents files if a 404 is met.
It simply means you will never fail on refreshing package contents. 🎉