Nanoc view LoadError after upgrading Ruby and Nanoc

[Dave Everitt]

Compile error after updating Nanoc and Ruby - initially just adsf was the missing gem, but after installing it, this looks more problematic:

---

LoadError: Couldn't find handler for: puma, thin, falcon, webrick.

===== STACK TRACE:

0. /usr/local/lib/ruby/gems/3.0.0/gems/rack-2.2.3/lib/rack/handler.rb:45:in `pick'

1. /usr/local/lib/ruby/gems/3.0.0/gems/rack-2.2.3/lib/rack/handler.rb:60:in `default'

2. /usr/local/lib/ruby/gems/3.0.0/gems/adsf-1.4.6/lib/adsf/server.rb:77:in `build_handler'

3. /usr/local/lib/ruby/gems/3.0.0/gems/adsf-1.4.6/lib/adsf/server.rb:17:in `run'

4. /usr/local/lib/ruby/gems/3.0.0/gems/nanoc-cli-4.12.2/lib/nanoc/cli/commands/view.rb:37:in `run'

5. /usr/local/lib/ruby/gems/3.0.0/gems/nanoc-cli-4.12.2/lib/nanoc/cli/command_runner.rb:15:in `block in call'

6. /usr/local/lib/ruby/gems/3.0.0/gems/nanoc-cli-4.12.2/lib/nanoc/cli/error_handler.rb:15:in `block in handle_while'

7. /usr/local/lib/ruby/gems/3.0.0/gems/nanoc-cli-4.12.2/lib/nanoc/cli/error_handler.rb:57:in `handle_while'

8. /usr/local/lib/ruby/gems/3.0.0/gems/nanoc-cli-4.12.2/lib/nanoc/cli/error_handler.rb:15:in `handle_while'

9. /usr/local/lib/ruby/gems/3.0.0/gems/nanoc-cli-4.12.2/lib/nanoc/cli/command_runner.rb:14:in `call'

10. /usr/local/lib/ruby/gems/3.0.0/gems/cri-2.15.11/lib/cri/command_dsl.rb:294:in `block in runner'

11. /usr/local/lib/ruby/gems/3.0.0/gems/cri-2.15.11/lib/cri/command.rb:362:in `run_this'

12. /usr/local/lib/ruby/gems/3.0.0/gems/cri-2.15.11/lib/cri/command.rb:298:in `run'

13. /usr/local/lib/ruby/gems/3.0.0/gems/cri-2.15.11/lib/cri/command.rb:316:in `run'

14. /usr/local/lib/ruby/gems/3.0.0/gems/nanoc-cli-4.12.2/lib/nanoc/cli.rb:88:in `block in run'

15. /usr/local/lib/ruby/gems/3.0.0/gems/nanoc-cli-4.12.2/lib/nanoc/cli/error_handler.rb:15:in `block in handle_while'

16. /usr/local/lib/ruby/gems/3.0.0/gems/nanoc-cli-4.12.2/lib/nanoc/cli/error_handler.rb:57:in `handle_while'

17. /usr/local/lib/ruby/gems/3.0.0/gems/nanoc-cli-4.12.2/lib/nanoc/cli/error_handler.rb:15:in `handle_while'

18. /usr/local/lib/ruby/gems/3.0.0/gems/nanoc-cli-4.12.2/lib/nanoc/cli.rb:86:in `run'

19. /usr/local/lib/ruby/gems/3.0.0/gems/nanoc-4.12.2/bin/nanoc:18:in `<top (required)>'

20. /usr/local/bin/nanoc:23:in `load'

===== VERSION INFORMATION:

Nanoc 4.12.2 © 2007–2021 Denis Defreyne.

Running ruby 3.0.2 (2021-07-07) on x86_64-darwin18 with RubyGems 3.2.22.

[Dave Everitt]

Sorry: LoadError, NOT compile error!

[Dave Everitt]

UPDATE: just needs gem install webrick. The error is a Ruby 3* issue and is covered in the Nanoc docs.