HEY's Gemfile

Gemfile

ruby '2.7.1'

gem 'rails', github: 'rails/rails'
gem 'tzinfo-data', '>= 1.2016.7'  # Don't rely on OSX/Linux timezone data

# Action Text
gem 'actiontext', github: 'basecamp/actiontext', ref: 'okra'
gem 'okra', github: 'basecamp/okra'

# Drivers
gem 'mysql2'
gem 'sqlite3'  # Used for asset generation in BK
gem 'redis', '~> 4.0'
gem 'redis_connectable', github: 'basecamp/redis_connectable'
gem 'redis-namespace'
gem 'connection_pool'
gem 'image_processing', '~> 1.2'

gem 'puma', '>= 4.3.3', github: 'puma/puma'

# JavaScript and assets
gem 'webpacker', '~> 5.1.1'
gem 'sprockets', github: 'rails/sprockets'
gem 'sprockets-rails', github: 'rails/sprockets-rails'
gem 'jbuilder', '~> 2.9', '>= 2.9.1', github: 'rails/jbuilder'
gem 'sassc-rails', '~> 2.1'
gem 'sassc', '<= 2.1'
gem 'local_time', '~> 2.0'
gem 'turbo', github: 'basecamp/turbo'

# Security
gem 'bcrypt', '~> 3.1.7'
gem 'pwned', '~> 2.0'
gem 'rotp'
gem 'webauthn'
gem 'rack-ratelimit', github: 'jeremy/rack-ratelimit'

# Jobs
gem 'resque', '~> 2.0.0'
gem 'resque-multi-job-forks', '~> 0.5'
gem 'resque-pool', github: 'nevans/resque-pool'
gem 'resque-scheduler', github: 'resque/resque-scheduler'
gem 'resque-pause', github: 'basecamp/resque-pause'
gem 'resque-web', require: 'resque_web'
gem 'resque-scheduler-web', github: 'mattgibson/resque-scheduler-web'
gem 'sinatra', github: 'sinatra/sinatra'

# Storage
gem 'aws-sdk-s3', '~> 1.48.0'
gem 'activestorage-redundancy', github: 'basecamp/activestorage-redundancy'
gem 'activestorage-office-previewer', '~> 0.1'

# Search
gem 'elasticsearch-model', github: 'elastic/elasticsearch-rails', branch: '6.x'
gem 'elasticsearch-rails', github: 'elastic/elasticsearch-rails', branch: '6.x'
gem 'html_scrubber', github: 'basecamp/html_scrubber'

# Push notifications
gem 'aws-sdk-pinpoint'

# Monitoring
gem 'easymon', '~> 1.4.2'
gem 'sentry-raven'

# Logging/instrumentation
gem 'rails_structured_logging', github: 'basecamp/rails-structured-logging'
gem 'full_request_logger', github: 'basecamp/full_request_logger'
gem 'critter', '~> 0.3.0', github: 'basecamp/critter', require: false
gem 'activejob-stats', github: 'basecamp/activejob-stats'

# Profiling/troubleshooting
gem 'rbtrace'
gem 'stackprof'
gem 'rack-mini-profiler'
gem 'flamegraph'

# Queenbee
gem 'queenbee', github: 'basecamp/queenbee-plugin'
gem 'actionpack-xml_parser'
gem 'countries'

# vCard parsing
gem 'pdi', github: 'basecamp/pdi', branch: 'utf-8-default'

# Supervised rails console in production environments
gem 'console1984', github: 'basecamp/console1984'

# Other
gem 'rake', github: 'ruby/rake'
gem 'platform_agent'
gem 'useragent', github: 'basecamp/useragent'
gem 'geared_pagination', '>= 1.0.0'
gem 'rqrcode'
gem 'base32'
gem 'httparty'
gem 'bootsnap', '>= 1.4.2', require: false # Reduces boot times through caching; required in config/boot.rb
gem 'rspamd', github: 'basecamp/rspamd-ruby'
gem 'redis_object', github: 'basecamp/redis_object'
gem 'ruby-progressbar', require: false
gem 'rinku', require: 'rails_rinku'
gem 'active_record_encryption', github: 'basecamp/active_record_encryption'
gem 'simpleidn'

group :development, :test do
  gem 'byebug'
  gem 'break'
  gem 'spring'

  # Code critics
  gem 'rubocop', '>= 0.72', require: false
  gem 'rubocop-performance', require: false
  gem 'rubocop-rails', require: false
  gem 'scss_lint', '~> 0.50', require: false
  gem 'bundler-audit', '~> 0.4', github: 'basecamp/bundler-audit', branch: 'thor-bump', require: false
  gem 'brakeman', '>= 4.0', require: false
  gem 'benchmark-ips', require: false
end

group :development do
  gem 'web-console'
  gem 'listen', '>= 3.0.5', '< 3.2'
  gem 'faker', require: false

  # Deploys, local CI
  gem 'haybales', github: 'basecamp/haybales'
end

group :test do
  gem 'mocha'
  gem 'capybara', '>= 2.15', github: 'teamcapybara/capybara'
  gem 'selenium-webdriver'
  gem 'webmock', github: 'bblimke/webmock'
  gem 'vcr'
end

@misner I do not think he added Sinatra for the sake of adding Sinatra to the project. It's used by other gems such as Resque (check their repo here: https://github.com/resque/resque). You will notice that they are using it to offer you a "nice dashboard".

@dhh any chance of an update to this? would be interesting to see how it's evolved

what are you using for API (generation), e.g. what serialization approach? render json, or jbuilder?

Thanks for posting. What does "BK" mean?

gem 'sqlite3'  # Used for asset generation in BK

BuildKite I assume, but they're using GitHub Actions now.