Track packages compiled into sysimage

[ktdq]

No description provided.

[timholy]

I'm not a PackageCompiler user, but this seems great! Many thanks for contributing this.

I left one comment, but otherwise:

• this could use a test. You could test the error condition I proposed in my comment, and for a working case you could manually create a Base.pkgorigins entry. I know that writing these tests is a little annoying but it's the only way to keep Revise working across Julia versions (it breaks with literally every new Julia point release since Revise and its supporting infrastructure reach deep into Julia's guts).
• this seems NEWS-worthy to me

[timholy]

What happens if you do this?

julia> module EmptyModule end
Main.EmptyModule

julia> Revise.track(EmptyModule)
ERROR: no Revise.track recipe for module EmptyModule
Stacktrace:
 [1] error(::String, ::Symbol)
   @ Base ./error.jl:44
 [2] _track(id::Base.PkgId, modname::Symbol; modified_files::Set{Tuple{Revise.PkgData, String}})
   @ Revise ~/.julia/packages/Revise/VskYC/src/recipes.jl:97
 [3] #track#44
   @ ~/.julia/packages/Revise/VskYC/src/recipes.jl:12 [inlined]
 [4] track(mod::Module)
   @ Revise ~/.julia/packages/Revise/VskYC/src/recipes.jl:9
 [5] top-level scope
   @ REPL[2]:1