Autoloading not working in rake task

[anand-membean]

I have a namespaced class Ci::MyClass in a lib at lib/ci/my_class.rb
I have a rake task which is calling Ci::MyClass
I have configured to load lib as

config.paths.add Rails.root.join('lib').to_s, auto_load: true, eager_load: true

It is loading with Zeitwerk properly when checked with rails runner

dark_coder zeitwerk-rake [main]$ rails runner 'p Ci::MyClass'
Running via Spring preloader in process 97073
------Ci::MyClass--------------------------------
Ci::MyClass

Also rails zeitwerk:check

dark_coder zeitwerk-rake [main]$ rails zeitwerk:check
Hold on, I am eager loading the application.
------Ci::MyClass--------------------------------
All is good!

But when actually Ci::MyClass is called from inside of a rake task it is not working.
The implicit namespacing does not seem to be working here.

dark_coder zeitwerk-rake [main]$ rails custom_task:call_lib_class
rails aborted!
NameError: uninitialized constant Ci
/Users/dark_coder/projects/zeitwerk-rake/lib/tasks/custom_task.rake:4:in `block (2 levels) in <main>'
/Users/dark_coder/projects/zeitwerk-rake/bin/rails:5:in `<top (required)>'
/Users/dark_coder/projects/zeitwerk-rake/bin/spring:10:in `block in <top (required)>'
/Users/dark_coder/projects/zeitwerk-rake/bin/spring:7:in `tap'
/Users/dark_coder/projects/zeitwerk-rake/bin/spring:7:in `<top (required)>'
Tasks: TOP => custom_task:call_lib_class
(See full trace by running task with --trace)

Am I doing or expecting something wrong here?
This is reproducible in the demo app at https://github.com/anand-membean/zeitwerk-rake
Please help

[fxn]

Great issue description, thank you!

Loaders are defined when applications boot, but Rake tasks do not load the application by default. You can do so by depending on :environment:

desc 'This is a custom task that calls a class from lib'
namespace :custom_task do
  task call_lib_class: :environment do
    puts "===========#{Ci::MyClass.class}================================================="
  end
end

[fxn]

That fix above is most surely all you need. I am going to close to keep issues in check, but please feel free to followup if you need further help!

[anand-membean]

@fxn That was a great catch. I was just wondering that for other tasks even the models are accessible that means they get loaded but why this isn't loading.
Thanks for pointing it out.
Many thanks!!

[anand-membean]

To anyone who visit this issue, I confirm that adding :environment loads the application and also loads the intended class via Zeitwerk.