Questions tagged [gemfile]

Gemfile - A format for describing gem dependencies for Ruby programs. A Gemfile describes the gem dependencies required to execute associated Ruby code.

Gemfiles are a format for describing what gems are required by a Ruby program in order to successfully run.

See also

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Should Gemfile.lock be included in .gitignore?

I'm sort of new to bundler and the files it generates. I have a copy of a git repo from GitHub that is being contributed to by many people so I was surprised to find that bundler created a file that didn't exist in the repo and wasn't in the…
aarona
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Ruby: What does 'require: false' in Gemfile mean?

Does this: gem 'whenever', require: false mean that the gem needs to be installed, or does it mean it is not required?
rafamvc
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What is the difference between Gemfile and Gemfile.lock in Ruby on Rails

I am a beginner to Ruby on Rails and I am using Rails 3.0.9. What is the difference between Gemfile and Gemfile.lock in Rails?
Shamith c
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bundle install returns "Could not locate Gemfile"

I'm new to Rails and am currently working through a guide. The guide states: Use a text editor to update the Gemfile needed by Bundler with the contents of Listing 2.1. source 'https://rubygems.org' gem 'rails', '3.2.3' group :development do …
levelone
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What is the difference between ~> and >= when specifying rubygem in Gemfile?

I often see the following notation(~>) in Gemfile. gem "cucumber", "~>0.8.5" gem "rspec", "~>1.3.0" I know the sign (>=) is just greater or equal to, but what does the (~>) notation mean? Are they both same or has any significant difference?
millisami
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Gem::LoadError for mysql2 gem, but it's already in Gemfile

Gem::LoadError Specified 'mysql2' for database adapter, but the gem is not loaded. Add `gem 'mysql2'` to your Gemfile This error occurred while loading the following files: active_record/base This is the error I get on running rails server. The…
Mysoulisinseoul
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What does the ~> symbol mean in a bundler Gemfile?

What does the -> mean next to a version number in a Gemfile? For example: gem 'sass-rails', '~> 3.1.5'
brad
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Your Ruby version is 2.0.0, but your Gemfile specified 2.1.0

When I try to bundle install I get the following message: Your Ruby version is 2.0.0, but your Gemfile specified 2.1.0 In my Gemfile I have the following: ruby '2.1.0' And when I run ruby -v in the console I get: ruby 2.1.0p0 (2013-12-25 revision…
stecd
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Meaning of new block "git_source(:github)" in Gemfile

Recently I created a new Rails 5 app, without a git repository. The auto-generated Gemfile contains a new block I had not seen before: git_source(:github) do |repo_name| repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/") …
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What is the use of Gemfile in rails?

What is the use of Gemfile in rails? How to use Gemfile?
vijay
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Troubles with git and Gemfile.lock

I keep running into the following error with my Gemfile.lock whenever I want to do a git pull or checkout a new branch. error: Your local changes to the following files would be overwritten by merge: Gemfile.lock Please, commit your changes or…
grautur
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How to find unused gems in my Gemfile

How to find unused gems in my Gemfile, so that I can cleanup references which are no longer used.
Joe
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Your Ruby version is 2.6.8, but your Gemfile specified 2.7.5

I have installed node@16(v16.18.0) in macOS and npm version: 8.19.2. Operating System macOS(Monterey) version: 12.6 Xcode Verion: 14.0.1 Followed some instructions to setup react-native environment in my devices using bellow steps are…
Imdadul Haque
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Bundler could not find compatible versions for gem

I've added a gem 'koala' to my Gemfile and seems to have thrown gem versions out of whack when I run the 'bundle install' command: Bundler could not find compatible versions for gem "faraday": In snapshot (Gemfile.lock): faraday (0.6.1) In…
hagope
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Understanding Gemfile.lock: Is it okay to delete Gemfile.lock then run bundle install again?

We would test this, but don't want to risk ruining our dev environment if this isn't supposed to happen. Is it okay to delete Gemfile.lock? We're on Rails 3.0.6.
Crashalot
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