Strange things trying to add `Downloads`

I am having some “strange” behaviours, that I can’t reproduce in a consistent matter, while trying to install the Download module in a package, so I am asking if this is the suggested way to add download functionality in a package I am developing in ~/.julia/dev/Foo:

  1. Within the Foo pkg environment do ]add Downloads
  2. At the beginning of the package source do import Downloads
  3. When needed, call the,dest) function

Right ?

Sounds good to me. What is strange?