Questions tagged [rubygems]
RubyGems is a package management tool for the Ruby programming language. It allows users to download and update Ruby libraries, and provides automatic dependency resolution.
rubygems
17,032
questions
1094
votes
13
answers
281k
views
How to make --no-ri --no-rdoc the default for gem install?
I don't use the RI or RDoc output from the gems I install in my machine or in the servers I handle (I use other means of documentation).
Every gem I install installs RI and RDoc documentation by ...
- 36.1k
1052
votes
8
answers
593k
views
Ruby: How to install a specific version of a ruby gem?
Using the command-line gem tool, how can I install a specific version of a gem?
- 64.7k
645
votes
13
answers
273k
views
How to remove RVM (Ruby Version Manager) from my system
How can I remove RVM (Ruby Version Manager) from my system?
- 8,264
642
votes
32
answers
607k
views
How to install a gem or update RubyGems if it fails with a permissions error
I'm trying to install a gem using gem install mygem or update RubyGems using gem update --system, and it fails with this error:
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't ...
- 8,317
536
votes
33
answers
315k
views
Error installing mysql2: Failed to build gem native extension
I am having some problems when trying to install mysql2 gem for Rails. When I try to install it by running bundle install or gem install mysql2 it gives me the following error:
Error installing ...
- 19.9k
517
votes
19
answers
317k
views
Error while installing json gem 'mkmf.rb can't find header files for ruby'
For context, it on a remote server which has a firewall. I'm setting up my environment through a proxy. I have ruby 1.8.7. When I try to gem install..
sudo gem install --http-proxy <host address&...
- 9,740
483
votes
38
answers
704k
views
You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory. (mac user)
below is what I need to do.
To run the specs, you'll need to install RSpec. First, run gem install bundler in the root directory of your project. Then, run bundle install. To run a single spec file, ...
- 4,831
472
votes
10
answers
234k
views
How to install gem from GitHub source?
I would like to install gem from the latest GitHub source.
How do I do this?
- 6,941
465
votes
9
answers
327k
views
How to downgrade or install an older version of Cocoapods
How can I downgrade Cocoapods to an older version, or how can I install an older version of Cocoapods?
- 11.7k
449
votes
6
answers
180k
views
How can I specify a local gem in my Gemfile?
I'd like Bundler to load a local gem. Is there an option for that? Or do I have to move the gem folder into the .bundle directory?
- 24.8k
446
votes
30
answers
1.1m
views
How do I install CocoaPods?
I referred to many links and tried, but I had no success. I read CocoaPods documents and many times tried to install, but I always failed because of the starting steps. I found one error whereby I can'...
- 5,218
418
votes
7
answers
379k
views
Uninstall old versions of Ruby gems
I have several versions of a Ruby gem:
$ gem list
rjb (1.3.4, 1.3.3, 1.1.9)
How can I remove old versions but keep the most recent?
- 10.9k
417
votes
12
answers
353k
views
How to find where gem files are installed
I can finds gems that are installed using gem list, but it doesn't show me where the gems are installed.
How can I find where the gems are, and how can I know before installing a gem where it will be ...
- 14.9k
366
votes
9
answers
381k
views
How can I install a local gem?
If I download a .gem file to a folder in my computer, can I install it later using gem install?
- 76.2k
363
votes
18
answers
250k
views
gem install: Failed to build gem native extension (can't find header files)
I am using Fedora 14 and I have MySQL and MySQL server 5.1.42 installed and running.
Now I tried to do this as root user:
gem install mysql
But I get this error:
Building native extensions. This ...
- 13.2k
327
votes
9
answers
109k
views
How to avoid "cannot load such file -- utils/popen" from homebrew on OSX
I'm getting an error when I run brew in the terminal:
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such ...
- 3,271
297
votes
9
answers
182k
views
Update just one gem with bundler
I use bundler to manage dependencies in my rails app, and I have a gem hosted in a git repository included as followed:
gem 'gem-name', :git => 'path/to/my/gem.git'
To update this gem, I execute ...
- 7,964
279
votes
18
answers
202k
views
find_spec_for_exe': can't find gem bundler (>= 0.a) (Gem::GemNotFoundException)
I used sudo bundle install and that might be the cause of the issue?
Now I have:
gem -v 2.6.14
ruby -v ruby 2.3.5p376 (2017-09-14 revision 59905) [x86_64-darwin15]
jekyll -v jekyll 3.6.2
bundle -...
- 41.4k
266
votes
30
answers
205k
views
bundle install fails with SSL certificate verification error
When I run bundle install for my Rails 3 project on Centos 5.5 it fails with an error:
Gem::RemoteFetcher::FetchError: SSL_connect returned=1 errno=0 state=SSLv3
read server certificate B: ...
- 23.2k
260
votes
27
answers
180k
views
unable to install pg gem
I tried using gem install pg but it doesn't seem to work.
gem install pg gives this error
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
...
- 5,701
247
votes
9
answers
302k
views
How to upgrade rubygems
I need to upgrade gems to 1.8 i tried installing the respective debian packages but it seems its not getting upgraded
anujm@test:~$ dpkg -l |grep -i rubygem
ii rubygems ...
- 9,462
241
votes
25
answers
148k
views
rmagick gem install "Can't find Magick-config"
I get the error shown below when attempting to install the rmagick gem. I am on Snowleopard 10.6 using RVM, Ruby 1.9.2-head and Rails 3.05. Responses to similar questions recommended installing ...
- 3,392
240
votes
20
answers
269k
views
How do I update Ruby Gems from behind a Proxy (ISA-NTLM)
The firewall I'm behind is running Microsoft ISA server in NTLM-only mode. Hash anyone have success getting their Ruby gems to install/update via Ruby SSPI gem or other method?
... or am I just being ...
- 48.1k
238
votes
11
answers
116k
views
Uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)
When I want to create a Ruby on Rails project, I get the message below.
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:55: uninitialized constant ActiveSupport::...
- 2,910
236
votes
24
answers
159k
views
Ignoring GEM because its extensions are not built
On both my work and home computers, I recently upgraded Ruby to 2.3.1, using ruby-install. I use chruby as my Ruby switcher.
I started seeing this warning in my terminal:
Ignoring bcrypt-3.1.11 ...
- 2,692
229
votes
20
answers
96k
views
Installing libv8 gem on OS X 10.9+
I'm trying to install libv8 3.16.14.3 but getting an error on OSX Mavericks using latest stable rvm and ruby-1.9.3-p125.
This is the output of running the command 'gem install libv8':
~/src(branch:...
- 24.1k
216
votes
11
answers
93k
views
Unresolved specs during Gem::Specification.reset:
When launching Guard, I'm getting this output:
$ guard
WARN: Unresolved specs during Gem::Specification.reset:
lumberjack (>= 1.0.2)
ffi (>= 0.5.0)
WARN: Clearing out unresolved ...
- 2,445
213
votes
7
answers
138k
views
Understanding the Gemfile.lock file
After running the bundle install command, 'Gemfile.lock' is created in the working directory. What do the directives inside that file mean?
For example, let's take the following file:
PATH
remote: ...
- 6,272
211
votes
18
answers
288k
views
Unable to install gem - Failed to build gem native extension - cannot load such file -- mkmf (LoadError)
Ruby 1.9.3
The part of Gemfile
#...............
gem "pony"
gem "bcrypt-ruby", :require => "bcrypt"
gem "nokogiri"
#..................
When I'm trying to install gems, I get an error
alex@...
- 13.2k
208
votes
24
answers
106k
views
Library not loaded: libmysqlclient.16.dylib error when trying to run 'rails server' on OS X 10.6 with mysql2 gem
I've been struggling with this for some time.
I've installed Rails 3, gem, mysql on my Snow Leopard machine. All was going well until I created my first project and tried to run
rails server
Upon ...
- 3,027
208
votes
9
answers
55k
views
Installing CocoaPods: no response
Trying to install CocoaPods from the terminal:
$ sudo gem install cocoapods
After entering my root password, nothing happens.
How can I debug that?
- 45.8k
204
votes
13
answers
136k
views
Uninstall all installed gems, in OSX?
There are instances where I would like to revert and uninstall all previous gem installations.
For instance, I needed to assist a friend migrate their rails development machine to use RVM. As they ...
- 8,518
202
votes
16
answers
121k
views
Rails: Installing PG gem on OS X - failure to build native extension
It seems many others have had problems installing the pg gem. None of the solutions posed for others have worked for me.
I have tried to install the pg gem and postgres.app. The pg gem won't install....
- 2,775
197
votes
11
answers
235k
views
List of installed gems?
Is there a Ruby method I can call to get the list of installed gems?
I want to parse the output of gem list.
Is there a different way to do this?
- 13.7k
192
votes
13
answers
125k
views
You have already activated X, but your Gemfile requires Y
When running rake I get this error:
You have already activated rake 0.9.2, but your Gemfile requires rake 0.8.7. Consider using bundle exec.
Using bundle exec rake instead of just rake seems to ...
- 27.9k
190
votes
13
answers
156k
views
warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777
Every time I run this command rails server:
warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777
I searched for a solution here and they said to type: chmod go-w /usr/local/...
- 1,963
186
votes
13
answers
217k
views
You don't have write permissions for the /var/lib/gems/2.3.0 directory
I have ruby installed on my ubuntu 16.04.
$which ruby
/usr/bin/ruby
$ruby -v
ruby 2.3.0p0 (2015-12-25) [x86_64-linux-gnu]
$gem install bundler
ERROR: While executing gem ... (Gem::...
- 9,966
186
votes
4
answers
61k
views
What does tilde-greater-than (~>) mean in Ruby gem dependencies? [duplicate]
What does ~> mean in the context of Ruby gem depenedencies?
For example, when opening a legacy project in the RubyMine IDE, I get this
message
Gems required for project are not attached:
arel (~> ...
- 29.3k
184
votes
15
answers
111k
views
Can't install gems on OS X "El Capitan"
I am not able to install and run fakes3 gem on El Capitan Beta 5.
I tried:
sudo gem install fakes3
ERROR: While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/fakes3
Then ...
- 13.5k
179
votes
7
answers
124k
views
How do I specify local .gem files in my Gemfile?
I have a couple of gem files which I install via gem install xx.gem. Can I tell Bundler to use them? Or do I have to specify the source path?
- 4,142
179
votes
8
answers
129k
views
The 'json' native gem requires installed build tools
I have ruby 1.9.2p180 (2011-02-18) [i386-mingw32] installed on my windows 7 machine. Now I tried to install the JSON gem using the command, "gem install json" and got the following error.
ERROR: ...
- 4,825
177
votes
23
answers
98k
views
Can't find the PostgreSQL client library (libpq)
I'm trying to install PostgreSQL for Rails on Mac OS X 10.6. First I tried the MacPorts install but that didn't go well so I did the one-click DMG install. That seemed to work.
I suspect I need to ...
- 44.7k
176
votes
9
answers
418k
views
Could not locate Gemfile
I'm certainly no Ruby developer but I have an application on my server using Ruby, Gems, and Bundler. I am trying to install another Ruby on under a different user account but on the same VPS. When I ...
- 2,975
174
votes
2
answers
42k
views
How to get a specific "commit" of a gem from github?
I'm using rails_admin, and since it is in (very) active development, bugs turn up every now and then.
There are no versions for the gem as far as I can tell, for the gem in github, so I can't use the ...
- 65.1k
171
votes
8
answers
165k
views
'sudo gem install' or 'gem install' and gem locations
Running 'sudo gem list --local' and 'gem list --local' give me differing results. My gem path is set to my home folder and only contains the gems from 'gem list --local'.
It's probably not good to ...
- 7,274
166
votes
4
answers
90k
views
Where do gems install?
I'm trying to edit one of the gem's config files and I can't find it. I'm not sure how I did this in the past.
- 27k
165
votes
8
answers
158k
views
Removing all installed Gems and starting over
I recently started learning Ruby and Ruby on Rails, and have watched a plethora of getting started materials. I have been finding lately that I keep getting errors where gems won't install or they ...
- 9,719
162
votes
4
answers
51k
views
Set up RSpec to test a gem (not Rails)
It is pretty easy with the added generator of rspec-rails to set up RSpec for testing a Rails application. But how about adding RSpec for testing a gem in development?
I am not using jeweler or such ...
- 16.5k
162
votes
3
answers
32k
views
Ruby : How to write a gem? [closed]
I'd like to write a package for Ruby and make it available as a gem.
What are the tools, steps and pitfalls ?
Are there any good tutorials, screencasts, etc., which helped you learning how to do it ?
- 46.2k
157
votes
19
answers
93k
views
Nokogiri installation fails -libxml2 is missing
I always worked my way around Nokogiri installation issues by following the documentation in the "Installing Nokogiri" tutorial.
But this time, even after installing all the dependencies, Nokogiri ...
- 1,775