Execution order between package extensions and `@require`

[mateuszbaran]

Right now when I have two packages, A and B, the order of loading package extension BAExt and execution of a @require A block in package B depends on which package is loaded first:

using A
using B

first executes @require A and then loads the extension, while

using B
using A

first loads the extension and then executes @require A block. Is there a way to ensure that the @require block is executed after the package extension is loaded regardless of the loading order?

Ref. JuliaManifolds/ManifoldDiff.jl#26