I would like to install gem from the latest GitHub source.
How do I do this?
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10 Answers
That depends on the project in question. Some projects have a *.gemspec file in their root directory. In that case, it would be:
gem build GEMNAME.gemspec
gem install gemname-version.gem
Other projects have a rake task, called gem or build or something like that. In that case you have to invoke rake <taskname>, but that depends on the project.
In both cases you have to download the source.
5 Comments
Waiting for Dev...
Just a tip to let people know what it's really happening. The
gemname-version.gem file is created when invoking gem build
Green
Where does
gem install gemname-version.gem command installs the git gem locally? I cannot find anywhere in my local machine an engine gem installed this way. Where does bundler hides it?
JonB
I think the
gem install gemname-version.gem line should be gem install --local gemname-version.gem
sameers
@Green -
gem which gemname should tell you where a specific gem is, does that not work for you?
eldi
Hi, I have only Rakefile and I have no clue how to install it. Any help?
In case you are using bundler, you need to add something like this to your Gemfile:
gem 'redcarpet', :git => 'git://github.com/tanoku/redcarpet.git'
And in case there is .gemspec file, it should be able to fetch and install the gem when running bundle install.
UPD. As indicated in comments, for Bundler to function properly you also need to add the following to config.ru:
require "bundler"
Bundler.setup(:default)
7 Comments
Louis Sayers
I also needed to add the following (added to my config.ru):
require "bundler" Bundler.setup(:default) See bundler docs for more details
Amit Patel
Additionally one can specify ref, branch or tag options for example
gem 'redcarpet', :git => 'git://github.com/tanoku/redcarpet.git', :branch => 'yourbranch'
Andrew
there's also:
gem 'redcarpet', github: 'tanoku/redcarpet'. akash.im/2012/06/05/bundler-new-github-option.html
Misha Reyzlin
@gaussblurinc
gem 'redcarpet', :git => 'git://github.com/tanoku/redcarpet.git', :tag => 'v2.3.5' <- the :tag => '' part
Banana
In case you get the following warning replacing
git:// with https:// solved it: The git source git://... uses the git protocol, which transmits data without encryption. Disable this warning with bundle config set --local git.allow_insecure true, or switch to the https protocol to keep your data secure. |
Try the specific_install gem it allows you you to install a gem from its github repository (like 'edge'), or from an arbitrary URL. Very usefull for forking gems and hacking on them on multiple machines and such.
gem install specific_install
gem specific_install -l <url to a github gem>
e.g.
gem specific_install https://github.com/githubsvnclone/rdoc.git
5 Comments
microspino
could you add more explanation on the
specific_install gem?
Murph
This is exactly what I was looking for, similar to Python's pip git support. gem specific_install -l <url to project on github> worked like a charm!
isomorphismes
ERROR: While executing gem ... (NoMethodError) undefined method 'build' for Gem::Package:Module Sounds very cool but I won't be looking into it further. Just wanted to post that it didn't work for me in case someone else is about to give it a whirl based on SO recommendation.
La-comadreja
@isomorphismes +1 to your comment. I created a separate question about that error here: stackoverflow.com/questions/27045874/…
KumZ
Is there a way to specify branch to use? - Edit responding to myself, from the doc: "$ gem specific_install github.com/githubsvnclone/rdoc.git edge" or "$ gem specific_install -l github.com/githubsvnclone/rdoc.git -b edge"
Bundler allows you to use gems directly from git repositories. In your Gemfile:
# Use the http(s), ssh, or git protocol
gem 'foo', git: 'https://github.com/dideler/foo.git'
gem 'foo', git: '[email protected]:dideler/foo.git'
gem 'foo', git: 'git://github.com/dideler/foo.git'
# Specify a tag, ref, or branch to use
gem 'foo', git: '[email protected]:dideler/foo.git', tag: 'v2.1.0'
gem 'foo', git: '[email protected]:dideler/foo.git', ref: '4aded'
gem 'foo', git: '[email protected]:dideler/foo.git', branch: 'development'
# Shorthand for public repos on GitHub (supports all the :git options)
gem 'foo', github: 'dideler/foo'
For more info, see https://bundler.io/v2.0/guides/git.html
1 Comment
fishbone
Please note that you might get in trouble if you use this approach with passenger and apache / ngix. When running
bundle, such git-gem- dependencies will not be installed globally but in the current user's home directory instead. Passenger will run ruby as your web-server's user (e.g. www-data) which has no access to this directory and therefore this "git-gem" won't be loaded. You will get an error ... is not yet checked out. Run bundle install first.OBSOLETE (see comments)
If the project is from github, and contained in the list on http://gems.github.com/list.html, then you can just add the github repo to the gems sources to install it :
$ gem sources -a http://gems.github.com
$ sudo gem install username-projectname
2 Comments
esharp
o rly? i just now did this and it DID work... go to gems.github.com before adding it to yr sources i guess? (but don't use sudo)
Tobu
@esharp, they host the ones they built, but they don't build them anymore. If the gem got updated since 2009, a gems.github.com copy will be obsolete.
If you are getting your gems from a public GitHub repository, you can use the shorthand
gem 'nokogiri', github: 'tenderlove/nokogiri'
Comments
Also you can do gem install username-projectname -s http://gems.github.com
2 Comments
Lee Hambley
Obsolete, see the other answer's comments.
Vivek Sampara
Still helped me for an issue with an old code base. Yes its 2013 and i am working on a rails 2.3.4 project.
If you install using bundler as suggested by gryzzly and the gem creates a binary then make sure you run it with bundle exec mygembinary as the gem is stored in a bundler directory which is not visible on the normal gem path.
Comments
In your Gemfile, add the following:
gem 'example', :git => 'git://github.com/example.git'
You can also add ref, branch and tag options,
For example if you want to download from a particular branch:
gem 'example', :git => "git://github.com/example.git", :branch => "my-branch"
Then run:
bundle install
Comments
On a fresh Linux machine you also need to install git. Bundle uses it behind the scenes.
