ruby on rails - How to change the order that gems are loaded from within one of the gems -

i have 2 gems "coregem" , "addongem". addon gem adds functionality overwrite core gem.

how make sure if second gem added overwrite views , assets of first.

so far works when adding main app:

 config.railties_order = [ :main_app, addongem::engine, :all] 

but i'd want within addongem.

thanks

where railties_order used

railties_order used here:

https://github.com/rails/rails/blob/master/railties/lib/rails/application.rb#l317

to determine ordering of initializer blocks run,

https://github.com/rails/rails/blob/master/railties/lib/rails/application.rb#l337

found in other gems.

https://github.com/rails/rails/blob/master/railties/lib/rails/application.rb#l47

so setting railties_order inside initializer block rather pointless, time initializer block called, railties_order set , in used rest of application.

what instead

apparently bunch more initializer blocks inside rails::application::bootstrap.

https://github.com/rails/rails/blob/master/railties/lib/rails/application/bootstrap.rb

those prepended before main application's initializer blocks:

https://github.com/rails/rails/blob/master/railties/lib/rails/application.rb#l262

so perhaps can monkey-patch bootstrap module initializers? guess that's call.