loadapp() not recognizing "using ..Module"

[jochenkrattenmacher]

Hello,
in Julia, with "using ..X", I can use model X from the parent module (if it is loaded there). According to this talk (at 43:30), this is usually a good thing to do where possible, otherwise the same module gets loaded several times.

However, loadapp() does not seem to support that? Is that by design, or is it simply not worth implementing such functionality because the gains would be small?

The following is for clarification:

Currently I have a little app which lives within a script:

using Stipple, StippleUI, StipplePlotly
include("Presentations.jl")
using .Presentations
(further code)

with Presentations.jl:

module Presentations
using ..Stipple
(further code)

When trying to refactor this code into the infrastructure provided by Genie.newapp_webservice (moving the code from the script to routes.jl, of course first removing the include statement and the dot in "using .Presentations"), I run into a problem. Namely, "loadapp()" gives me the following:

ERROR: LoadError: UndefVarError: Stipple not defined
Stacktrace:
 [1] include
   @ ./Base.jl:418 [inlined]
 [2] include_package_for_output(pkg::Base.PkgId, input::String, depot_path::Vector{String}, dl_load_path::Vector{String}, load_path::Vector{String}, concrete_deps::Vector{Pair{Base.PkgId, UInt64}}, source::String)
   @ Base ./loading.jl:1318
 [3] top-level scope
   @ none:1
 [4] eval
   @ ./boot.jl:373 [inlined]
 [5] eval(x::Expr)
   @ Base.MainInclude ./client.jl:453
 [6] top-level scope
   @ none:1
in expression starting at /Users/jochenk/Documents/DT repo/DTprototype/src/Presentations.jl:1
ERROR: Failed to precompile Presentations [top-level] to /Users/jochenk/.julia/compiled/v1.7/jl_kNDSvY.
Stacktrace:
 [1] error(s::String)
   @ Base ./error.jl:33
 [2] compilecache(pkg::Base.PkgId, path::String, internal_stderr::IO, internal_stdout::IO, ignore_loaded_modules::Bool)
   @ Base ./loading.jl:1466
 [3] compilecache(pkg::Base.PkgId, path::String)
   @ Base ./loading.jl:1410
 [4] _require(pkg::Base.PkgId)
   @ Base ./loading.jl:1120
 [5] require(uuidkey::Base.PkgId)
   @ Base ./loading.jl:1013
 [6] require(into::Module, mod::Symbol)
   @ Base ./loading.jl:997
 [7] top-level scope
   @ ~/Documents/DT repo/DTprototype/routes.jl:3
in expression starting at /Users/jochenk/Documents/DT repo/DTprototype/routes.jl:3

I can of course still import via using Stipple and everything works. For my purposes that is good (and fast) enough, but well, I am curious whether I am missing something here

[jochenkrattenmacher]

Okay, I understand my mistake now. What I did was the following:

in routes.jl:

using Genie.Router
using Stipple, StippleUI, StipplePlotly
using Presentations

in Presentations.jl:

module Presentations
using ..Stipple, ..StipplePlotly

This led to the error described in the original post. My mistake was in routes.jl. Here's a version which works just as intended:

using Genie.Router
using Stipple, StippleUI, StipplePlotly
include("src/Presentations.jl")
using ..Presentations

This sped up compiling my code, from 90 to 45 seconds. HOWEVER, this approach has a downside in that it doesn't seem to be compatible with revise. As I documented here, I found that combining my modules into one big module and making use of @reexport turned out to be a good solution