whois-parser crashes on load due to ActiveSupport brokenness

[todb-cisa]

This is related to rails/rails#49495

ActiveSupport is apparently busted in latest (7.1.3.? as of October 2023, it seems). Example:

➜  project git:(main) ✗ gem install whois-parser
Successfully installed whois-parser-2.0.0
Parsing documentation for whois-parser-2.0.0
Done installing documentation for whois-parser after 0 seconds
1 gem installed
➜  project git:(main) ✗ irb
irb(main):001> require 'whois-parser'
/Users/user/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/activesupport-7.1.3.2/lib/active_support/core_ext/array/conversions.rb:108:in `<class:Array>': undefined method `deprecator' for module ActiveSupport (NoMethodError)

  deprecate to_default_s: :to_s, deprecator: ActiveSupport.deprecator
                                                          ^^^^^^^^^^^
Did you mean?  deprecate_constant
	from /Users/user/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/activesupport-7.1.3.2/lib/active_support/core_ext/array/conversions.rb:8:in `<top (required)>'
	from <internal:/Users/user/.rbenv/versions/3.3.0/lib/ruby/site_ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:136:in `require'
	from <internal:/Users/user/.rbenv/versions/3.3.0/lib/ruby/site_ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:136:in `require'
	from /Users/user/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/activesupport-7.1.3.2/lib/active_support/duration.rb:3:in `<top (required)>'
	from <internal:/Users/user/.rbenv/versions/3.3.0/lib/ruby/site_ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:136:in `require'
	from <internal:/Users/user/.rbenv/versions/3.3.0/lib/ruby/site_ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:136:in `require'
	from /Users/user/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/activesupport-7.1.3.2/lib/active_support/core_ext/time/calculations.rb:3:in `<top (required)>'
	from <internal:/Users/user/.rbenv/versions/3.3.0/lib/ruby/site_ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:136:in `require'
	from <internal:/Users/user/.rbenv/versions/3.3.0/lib/ruby/site_ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:136:in `require'
	from /Users/user/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/whois-parser-2.0.0/lib/whois/parser.rb:16:in `<top (required)>'
	from /Users/user/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/whois-parser-2.0.0/lib/whois-parser.rb:10:in `require_relative'
	from /Users/user/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/whois-parser-2.0.0/lib/whois-parser.rb:10:in `<top (required)>'
	from <internal:/Users/user/.rbenv/versions/3.3.0/lib/ruby/site_ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:141:in `require'
	from <internal:/Users/user/.rbenv/versions/3.3.0/lib/ruby/site_ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:141:in `rescue in require'
	from <internal:/Users/user/.rbenv/versions/3.3.0/lib/ruby/site_ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:135:in `require'
	from (irb):1:in `<main>'
	... 4 levels...
<internal:/Users/user/.rbenv/versions/3.3.0/lib/ruby/site_ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:136:in `require': cannot load such file -- whois-parser (LoadError)
	from <internal:/Users/user/.rbenv/versions/3.3.0/lib/ruby/site_ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:136:in `require'
	from (irb):1:in `<main>'
	from <internal:kernel>:187:in `loop'
	from /Users/user/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/irb-1.11.0/exe/irb:9:in `<top (required)>'
	from /Users/user/.rbenv/versions/3.3.0/bin/irb:25:in `load'
	from /Users/user/.rbenv/versions/3.3.0/bin/irb:25:in `<main>'
irb(main):002> 

This seems resolved when forcing a downgrade to ActiveSupport 7.0.8:

➜  project git:(main) ✗ cat Gemfile         
source 'https://rubygems.org'

gem 'public_suffix'
gem 'activesupport', '~> 7.0.8'
gem 'whois-parser'
➜  project git:(main) ✗ irb -r 'whois-parser'
irb(main):001> Whois::Parser.class
=> Class
irb(main):002> 

Pinning to that version in the gem should resolve things, if you cared to. Dunno if that breaks other things, but probably not.

My Ruby version is 3.3.0, installed with rbenv, from MacOS Homebrew. If that matters.

[Taomyn]

Adding require 'activesupport' to my code got this working - apparently it's needed because of the way activesupport is being used. I'm not a Ruby coder so no clue what that means, I'm just trying to get whois and whois-parser to work.