Running bin/rails g spree:install -> [WARNING] Could not load generator "generators/spree/install/install_generator". Error: superclass mismatch for class Command.

[delphaber]

Hi :)

I wanted to create a new app using solidus 2.10.2 on rails 6.0.3.2 on ruby 2.7.1 on macOS Catalina 10.15.6

I was not able to complete bin/rails g spree:install: rails told me that the generator does not exist. The problem is related to this warning: [WARNING] Could not load generator "generators/spree/install/install_generator". Error: superclass mismatch for class Command.

I think this is related: rails/thor#721

How to fix:

I added this line to Gemfile

gem 'thor', '~> 0.20.3'

But I had to manually uninstall the other thor version using gem uninstall and I had to clean bootsnap cache and stop spring. Then I was able to finish the installation :)

[jarednorman]

Thanks for the detailed report!

[kennyadsl]

Closing, we are not supporting this versions anymore and it doesn't seem to be still here. Thanks for the report!