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BUNDLE-UPDATE(1) BUNDLE-UPDATE(1)
1mNAME0m
1mbundle-update 22m- Update your gems to the latest available versions
1mSYNOPSIS0m
1mbundle update 4m22m*gems24m [--group=NAME] [--source=NAME] [--local] [--ruby]
1mDESCRIPTION0m
Update the gems specified (all gems, if none are specified), ignoring
the previously installed gems specified in the 1mGemfile.lock22m. In gen-
eral, you should use bundle install(1) 4mbundle-install.1.html24m to install
the same exact gems and versions across machines.
You would use 1mbundle update 22mto explicitly update the version of a gem.
1mOPTIONS0m
1m--group=<name>0m
Only update the gems in the specified group. For instance, you
can update all gems in the development group with 1mbundle update0m
1m--group development22m. You can also call 1mbundle update rails0m
1m--group test 22mto update the rails gem and all gems in the test
group, for example.
1m--source=<name>0m
The name of a 1m:git 22mor 1m:path 22msource used in the Gemfile(5). For
instance, with a 1m:git 22msource of
1mhttp://github.com/rails/rails.git22m, you would call 1mbundle update0m
1m--source rails0m
1m--local0m
Do not attempt to fetch gems remotely and use the gem cache
instead.
1m--ruby 22mUpdate the locked version of Ruby to the current version of
Ruby.
1m--bundler0m
Update the locked version of bundler to the invoked bundler ver-
sion.
1mUPDATING ALL GEMS0m
If you run 1mbundle update 22mwith no parameters, bundler will ignore any
previously installed gems and resolve all dependencies again based on
the latest versions of all gems available in the sources.
Consider the following Gemfile(5):
source "https://rubygems.org"
gem "rails", "3.0.0.rc"
gem "nokogiri"
When you run bundle install(1) 4mbundle-install.1.html24m the first time,
bundler will resolve all of the dependencies, all the way down, and
install what you need:
Fetching gem metadata from https://rubygems.org/.........
Resolving dependencies...
Installing builder 2.1.2
Installing abstract 1.0.0
Installing rack 1.2.8
Using bundler 1.7.6
Installing rake 10.4.0
Installing polyglot 0.3.5
Installing mime-types 1.25.1
Installing i18n 0.4.2
Installing mini_portile 0.6.1
Installing tzinfo 0.3.42
Installing rack-mount 0.6.14
Installing rack-test 0.5.7
Installing treetop 1.4.15
Installing thor 0.14.6
Installing activesupport 3.0.0.rc
Installing erubis 2.6.6
Installing activemodel 3.0.0.rc
Installing arel 0.4.0
Installing mail 2.2.20
Installing activeresource 3.0.0.rc
Installing actionpack 3.0.0.rc
Installing activerecord 3.0.0.rc
Installing actionmailer 3.0.0.rc
Installing railties 3.0.0.rc
Installing rails 3.0.0.rc
Installing nokogiri 1.6.5
Bundle complete! 2 Gemfile dependencies, 26 gems total.
Use `bundle show [gemname]` to see where a bundled gem is installed.
As you can see, even though you have two gems in the Gemfile(5), your
application needs 26 different gems in order to run. Bundler remembers
the exact versions it installed in 1mGemfile.lock22m. The next time you run
bundle install(1) 4mbundle-install.1.html24m, bundler skips the dependency
resolution and installs the same gems as it installed last time.
After checking in the 1mGemfile.lock 22minto version control and cloning it
on another machine, running bundle install(1) 4mbundle-install.1.html0m
will 4mstill24m install the gems that you installed last time. You don't
need to worry that a new release of 1merubis 22mor 1mmail 22mchanges the gems you
use.
However, from time to time, you might want to update the gems you are
using to the newest versions that still match the gems in your Gem-
file(5).
To do this, run 1mbundle update22m, which will ignore the 1mGemfile.lock22m, and
resolve all the dependencies again. Keep in mind that this process can
result in a significantly different set of the 25 gems, based on the
requirements of new gems that the gem authors released since the last
time you ran 1mbundle update22m.
1mUPDATING A LIST OF GEMS0m
Sometimes, you want to update a single gem in the Gemfile(5), and leave
the rest of the gems that you specified locked to the versions in the
1mGemfile.lock22m.
For instance, in the scenario above, imagine that 1mnokogiri 22mreleases
version 1m1.4.422m, and you want to update it 4mwithout24m updating Rails and all
of its dependencies. To do this, run 1mbundle update nokogiri22m.
Bundler will update 1mnokogiri 22mand any of its dependencies, but leave
alone Rails and its dependencies.
1mOVERLAPPING DEPENDENCIES0m
Sometimes, multiple gems declared in your Gemfile(5) are satisfied by
the same second-level dependency. For instance, consider the case of
1mthin 22mand 1mrack-perftools-profiler22m.
source "https://rubygems.org"
gem "thin"
gem "rack-perftools-profiler"
The 1mthin 22mgem depends on 1mrack >= 1.022m, while 1mrack-perftools-profiler0m
depends on 1mrack ~> 1.022m. If you run bundle install, you get:
Fetching source index for https://rubygems.org/
Installing daemons (1.1.0)
Installing eventmachine (0.12.10) with native extensions
Installing open4 (1.0.1)
Installing perftools.rb (0.4.7) with native extensions
Installing rack (1.2.1)
Installing rack-perftools_profiler (0.0.2)
Installing thin (1.2.7) with native extensions
Using bundler (1.0.0.rc.3)
In this case, the two gems have their own set of dependencies, but they
share 1mrack 22min common. If you run 1mbundle update thin22m, bundler will
update 1mdaemons22m, 1meventmachine 22mand 1mrack22m, which are dependencies of 1mthin22m,
but not 1mopen4 22mor 1mperftools.rb22m, which are dependencies of
1mrack-perftools_profiler22m. Note that 1mbundle update thin 22mwill update 1mrack0m
even though it's 4malso24m a dependency of 1mrack-perftools_profiler22m.
1mIn short22m, when you update a gem using 1mbundle update22m, bundler will
update all dependencies of that gem, including those that are also
dependencies of another gem.
In this scenario, updating the 1mthin 22mversion manually in the Gemfile(5),
and then running bundle install(1) 4mbundle-install.1.html24m will only
update 1mdaemons 22mand 1meventmachine22m, but not 1mrack22m. For more information,
see the 1mCONSERVATIVE UPDATING 22msection of bundle install(1) 4mbun-0m
4mdle-install.1.html24m.
1mRECOMMENDED WORKFLOW0m
In general, when working with an application managed with bundler, you
should use the following workflow:
o After you create your Gemfile(5) for the first time, run
$ bundle install
o Check the resulting 1mGemfile.lock 22minto version control
$ git add Gemfile.lock
o When checking out this repository on another development machine,
run
$ bundle install
o When checking out this repository on a deployment machine, run
$ bundle install --deployment
o After changing the Gemfile(5) to reflect a new or update depen-
dency, run
$ bundle install
o Make sure to check the updated 1mGemfile.lock 22minto version control
$ git add Gemfile.lock
o If bundle install(1) 4mbundle-install.1.html24m reports a conflict, man-
ually update the specific gems that you changed in the Gemfile(5)
$ bundle update rails thin
o If you want to update all the gems to the latest possible versions
that still match the gems listed in the Gemfile(5), run
$ bundle update
October 2016 BUNDLE-UPDATE(1)
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