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Cannot create Rails App - gem issues "Ignoring nokogiri" and other gems

Ryan Mindigo asked in Rails

When I try to create a new Rails App it fails. I am on Big Sur 11.3, Ruby 2.7.2, and when type rails-v shows 6.0.3.4 but also ignoring quite a few gems including nokogiri and 6-7 others. I have tried to move to Ruby 3+ by updating rbenv and several other approaches however just can't get to Ruby 3 even as an option. I am guessing there is mismatch between Ruby version and Rails version but not sure. Tried to update bundle, or gem pristine none of that worked.

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Please share what the actual issues are, otherwise we can't help much. 👍

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When I create a new Rails App it seems to create the files but throws quite a few errors re gemfiles can't locate. Here is a sample let me know if this helps:

Ignoring nokogiri-1.10.10 because its extensions are not built. Try: gem pristine nokogiri --version 1.10.10
Could not find gem 'rails (~> 6.0.3, >= 6.0.3.4)' in any of the gem sources listed in your Gemfile.
Run bundle install to install missing gems.

ryanmindigo@Ryans-MacBook-Air-2 Rails-Apps % bundle install
Could not locate Gemfile

Then when I try to run the server with Rails S get similar issue:

Ignoring nokogiri-1.10.10 because its extensions are not built. Try: gem pristine nokogiri --version 1.10.10
Could not find gem 'rails (~> 6.0.3, >= 6.0.3.4)' in any of the gem sources listed in your Gemfile.
Run bundle install to install missing gems.

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Here is the full dump of what happens:

ryanmindigo@Ryans-MacBook-Air-2 Rails-Apps % rails new MyApp
Ignoring nokogiri-1.10.10 because its extensions are not built. Try: gem pristine nokogiri --version 1.10.10
Ignoring bindex-0.8.1 because its extensions are not built. Try: gem pristine bindex --version 0.8.1
Ignoring bootsnap-1.4.8 because its extensions are not built. Try: gem pristine bootsnap --version 1.4.8
Ignoring byebug-11.1.3 because its extensions are not built. Try: gem pristine byebug --version 11.1.3
Ignoring ffi-1.13.1 because its extensions are not built. Try: gem pristine ffi --version 1.13.1
Ignoring msgpack-1.3.3 because its extensions are not built. Try: gem pristine msgpack --version 1.3.3
Ignoring nio4r-2.5.4 because its extensions are not built. Try: gem pristine nio4r --version 2.5.4
Ignoring nokogiri-1.10.10 because its extensions are not built. Try: gem pristine nokogiri --version 1.10.10
Ignoring puma-4.3.6 because its extensions are not built. Try: gem pristine puma --version 4.3.6
Ignoring sassc-2.4.0 because its extensions are not built. Try: gem pristine sassc --version 2.4.0
Ignoring sqlite3-1.4.2 because its extensions are not built. Try: gem pristine sqlite3 --version 1.4.2
Ignoring websocket-driver-0.7.3 because its extensions are not built. Try: gem pristine websocket-driver --version 0.7.3
create

create README.md
create Rakefile
create .ruby-version
create config.ru
create .gitignore
create Gemfile
run git init from "."
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: git config --global init.defaultBranch
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: git branch -m
Initialized empty Git repository in /Users/ryanmindigo/Desktop/Rails-Apps/MyApp/.git/
create package.json
create app
create app/assets/config/manifest.js
create app/assets/stylesheets/application.css
create app/channels/application_cable/channel.rb
create app/channels/application_cable/connection.rb
create app/controllers/application_controller.rb
create app/helpers/application_helper.rb
create app/javascript/channels/consumer.js
create app/javascript/channels/index.js
create app/javascript/packs/application.js
create app/jobs/application_job.rb
create app/mailers/application_mailer.rb
create app/models/application_record.rb
create app/views/layouts/application.html.erb
create app/views/layouts/mailer.html.erb
create app/views/layouts/mailer.text.erb
create app/assets/images
create app/assets/images/.keep
create app/controllers/concerns/.keep
create app/models/concerns/.keep
create bin
create bin/rails
create bin/rake
create bin/setup
create bin/yarn
create config
create config/routes.rb
create config/application.rb
create config/environment.rb
create config/cable.yml
create config/puma.rb
create config/spring.rb
create config/storage.yml
create config/environments
create config/environments/development.rb
create config/environments/production.rb
create config/environments/test.rb
create config/initializers
create config/initializers/application_controller_renderer.rb
create config/initializers/assets.rb
create config/initializers/backtrace_silencers.rb
create config/initializers/content_security_policy.rb
create config/initializers/cookies_serializer.rb
create config/initializers/cors.rb
create config/initializers/filter_parameter_logging.rb
create config/initializers/inflections.rb
create config/initializers/mime_types.rb
create config/initializers/new_framework_defaults_6_0.rb
create config/initializers/wrap_parameters.rb
create config/locales
create config/locales/en.yml
create config/master.key
append .gitignore
create config/boot.rb
create config/database.yml
create db
create db/seeds.rb
create lib
create lib/tasks
create lib/tasks/.keep
create lib/assets
create lib/assets/.keep
create log
create log/.keep
create public
create public/404.html
create public/422.html
create public/500.html
create public/apple-touch-icon-precomposed.png
create public/apple-touch-icon.png
create public/favicon.ico
create public/robots.txt
create tmp
create tmp/.keep
create tmp/pids
create tmp/pids/.keep
create tmp/cache
create tmp/cache/assets
create vendor
create vendor/.keep
create test/fixtures
create test/fixtures/.keep
create test/fixtures/files
create test/fixtures/files/.keep
create test/controllers
create test/controllers/.keep
create test/mailers
create test/mailers/.keep
create test/models
create test/models/.keep
create test/helpers
create test/helpers/.keep
create test/integration
create test/integration/.keep
create test/channels/application_cable/connection_test.rb
create test/test_helper.rb
create test/system
create test/system/.keep
create test/application_system_test_case.rb
create storage
create storage/.keep
create tmp/storage
create tmp/storage/.keep
remove config/initializers/cors.rb
remove config/initializers/new_framework_defaults_6_0.rb
run bundle install
The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java.
Fetching gem metadata from https://rubygems.org/...........
Fetching gem metadata from https://rubygems.org/.
Resolving dependencies........
sqlite3-1.6.9-x86_64-darwin requires ruby version >= 2.7, < 3.3.dev, which is incompatible with the current version, ruby
2.6.3p62
run bundle binstubs bundler
Could not find gem 'rails (~> 6.0.3, >= 6.0.3.4)' in any of the gem sources listed in your Gemfile.
run bundle exec spring binstub --all
Could not find gem 'rails (~> 6.0.3, >= 6.0.3.4)' in any of the gem sources listed in your Gemfile.
Run bundle install to install missing gems.
rails webpacker:install
Ignoring nokogiri-1.10.10 because its extensions are not built. Try: gem pristine nokogiri --version 1.10.10
Could not find gem 'rails (~> 6.0.3, >= 6.0.3.4)' in any of the gem sources listed in your Gemfile.
Run bundle install to install missing gems.

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It sounds as if you want to be current. So you might focus on getting Rails 7 and Ruby 3 installed. 'nokogiri' has frequently caused me issues like this—I never quite know what got it working again. Search for how to install Rails using rbenv. I don't use rbenv but it seems to be the most commonly used so should be solid. Good luck.

One old set of notes said these two commands worked.
brew install libxml2
bundle config build.nokogiri --use-system-libraries --with-xml2-include=/usr/include/libxml2/

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Thanks Greg! You are prob right, I did spend 30mins trying to get to Ruby 3+ and Rails 7 but for some reason couldnt get to Ruby 3. Will try those commands next :)

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