ruby--ruby/man/bundle-install.1.txt

BUNDLE-INSTALL(1)					     BUNDLE-INSTALL(1)



1mNAME0m
       1mbundle-install 22m- Install the dependencies specified in your Gemfile

1mSYNOPSIS0m
       1mbundle   install   22m[--binstubs[=DIRECTORY]]   [--clean]  [--deployment]
       [--force] [--frozen] [--full-index] [--gemfile=GEMFILE] [--jobs=NUMBER]
       [--local]    [--no-cache]    [--no-prune]   [--path   PATH]   [--quiet]
       [--retry=NUMBER] [--shebang] [--standalone[=GROUP[ GROUP...]]]  [--sys-
       tem]   [--trust-policy=POLICY]	[--with=GROUP[	 GROUP...]]   [--with-
       out=GROUP[ GROUP...]]

1mDESCRIPTION0m
       Install the gems specified in your Gemfile(5). If  this	is  the  first
       time  you  run  bundle  install	(and  a  1mGemfile.lock 22mdoes not exist),
       Bundler will fetch all remote sources, resolve dependencies and install
       all needed gems.

       If a 1mGemfile.lock 22mdoes exist, and you have not updated your Gemfile(5),
       Bundler will fetch all remote sources, but use the dependencies	speci-
       fied in the 1mGemfile.lock 22minstead of resolving dependencies.

       If  a  1mGemfile.lock  22mdoes  exist, and you have updated your Gemfile(5),
       Bundler will use the dependencies in the 1mGemfile.lock 22mfor all gems that
       you  did  not update, but will re-resolve the dependencies of gems that
       you did update. You can find more information about this update process
       below under 4mCONSERVATIVE24m 4mUPDATING24m.

1mOPTIONS0m
       To  apply  any  of 1m--binstubs22m, 1m--deployment22m, 1m--path22m, or 1m--without 22mevery
       time 1mbundle install 22mis run, use 1mbundle config 22m(see bundle-config(1)).

       1m--binstubs[=<directory>]0m
	      Creates a directory (defaults to 1m~/bin22m) and place  any  executa-
	      bles from the gem there. These executables run in Bundler's con-
	      text. If used, you might add this  directory  to	your  environ-
	      ment's  1mPATH 22mvariable. For instance, if the 1mrails 22mgem comes with
	      a 1mrails 22mexecutable, this flag will create a 1mbin/rails 22mexecutable
	      that ensures that all referred dependencies will be resolved us-
	      ing the bundled gems.

       1m--clean0m
	      On finishing the installation Bundler is	going  to  remove  any
	      gems  not  present  in the current Gemfile(5). Don't worry, gems
	      currently in use will not be removed.

       1m--deployment0m
	      In 4mdeployment24m 4mmode24m, Bundler will 'roll-out' the bundle for  pro-
	      duction  or  CI  use. Please check carefully if you want to have
	      this option enabled in your development environment.

       1m--force0m
	      Force download every gem, even if the required versions are  al-
	      ready  available	locally.  1m--redownload 22mis an alias of this op-
	      tion.

       1m--frozen0m
	      Do not allow the Gemfile.lock to be updated after this  install.
	      Exits  non-zero  if  there  are  going to be changes to the Gem-
	      file.lock.

       1m--full-index0m
	      Bundler will not call Rubygems' API endpoint (default) but down-
	      load and cache a (currently big) index file of all gems. Perfor-
	      mance can be improved for large bundles that  seldom  change  by
	      enabling this option.

       1m--gemfile=<gemfile>0m
	      The  location  of  the Gemfile(5) which Bundler should use. This
	      defaults to a Gemfile(5) in the current  working	directory.  In
	      general, Bundler will assume that the location of the Gemfile(5)
	      is also the project's root and will try to find 1mGemfile.lock 22mand
	      1mvendor/cache 22mrelative to this location.

       1m--jobs=[<number>]22m, 1m-j[<number>]0m
	      The  maximum  number  of parallel download and install jobs. The
	      default is 1m122m.

       1m--local0m
	      Do not attempt to connect to 1mrubygems.org22m. Instead, Bundler will
	      use  the	gems  already  present	in  Rubygems' cache or in 1mven-0m
	      1mdor/cache22m. Note that if a appropriate platform-specific gem	ex-
	      ists on 1mrubygems.org 22mit will not be found.

       1m--no-cache0m
	      Do  not  update the cache in 1mvendor/cache 22mwith the newly bundled
	      gems. This does not remove any gems in the cache but  keeps  the
	      newly bundled gems from being cached during the install.

       1m--no-prune0m
	      Don't  remove  stale  gems  from the cache when the installation
	      finishes.

       1m--path=<path>0m
	      The location to install the specified gems to. This defaults  to
	      Rubygems'  setting.  Bundler shares this location with Rubygems,
	      1mgem install ... 22mwill have gem installed there,  too.  Therefore,
	      gems  installed  without	a  1m--path  ... 22msetting will show up by
	      calling 1mgem list22m. Accordingly, gems installed to other locations
	      will not get listed.

       1m--quiet0m
	      Do  not  print  progress information to the standard output. In-
	      stead, Bundler will exit using a status code (1m$?22m).

       1m--retry=[<number>]0m
	      Retry failed network or git requests for 4mnumber24m times.

       1m--shebang=<ruby-executable>0m
	      Uses the specified ruby executable (usually 1mruby22m) to execute the
	      scripts  created with 1m--binstubs22m. In addition, if you use 1m--bin-0m
	      1mstubs 22mtogether with 1m--shebang jruby 22mthese  executables	will  be
	      changed to execute 1mjruby 22minstead.

       1m--standalone[=<list>]0m
	      Makes  a	bundle	that can work without depending on Rubygems or
	      Bundler at runtime. A space separated list of groups to  install
	      has  to  be  specified. Bundler creates a directory named 1mbundle0m
	      and  installs  the  bundle  there.  It  also  generates  a  1mbun-0m
	      1mdle/bundler/setup.rb  22mfile to replace Bundler's own setup in the
	      manner required. Using this option implicitly sets  1mpath22m,  which
	      is a [remembered option][REMEMBERED OPTIONS].

       1m--system0m
	      Installs	the  gems  specified  in  the  bundle  to the system's
	      Rubygems location. This overrides any previous configuration  of
	      1m--path22m.

       1m--trust-policy=[<policy>]0m
	      Apply  the  Rubygems security policy 4mpolicy24m, where policy is one
	      of 1mHighSecurity22m, 1mMediumSecurity22m, 1mLowSecurity22m,  1mAlmostNoSecurity22m,
	      or 1mNoSecurity22m. For more details, please see the Rubygems signing
	      documentation linked below in 4mSEE24m 4mALSO24m.

       1m--with=<list>0m
	      A space-separated list of groups referencing gems to install. If
	      an  optional group is given it is installed. If a group is given
	      that is in the remembered list of groups given to --without,  it
	      is removed from that list.

       1m--without=<list>0m
	      A space-separated list of groups referencing gems to skip during
	      installation. If a group is given that is in the remembered list
	      of groups given to --with, it is removed from that list.

1mDEPLOYMENT MODE0m
       Bundler's defaults are optimized for development. To switch to defaults
       optimized for deployment and for CI, use the 1m--deployment 22mflag. Do	not
       activate  deployment  mode on development machines, as it will cause an
       error when the Gemfile(5) is modified.

       1.  A 1mGemfile.lock 22mis required.

	   To ensure that the same versions of the gems you developed with and
	   tested  with  are  also  used in deployments, a 1mGemfile.lock 22mis re-
	   quired.

	   This is mainly to ensure that  you  remember  to  check  your  1mGem-0m
	   1mfile.lock 22minto version control.

       2.  The 1mGemfile.lock 22mmust be up to date

	   In  development,  you  can modify your Gemfile(5) and re-run 1mbundle0m
	   1minstall 22mto 4mconservatively24m 4mupdate24m your 1mGemfile.lock 22msnapshot.

	   In deployment, your 1mGemfile.lock 22mshould be up-to-date with  changes
	   made in your Gemfile(5).

       3.  Gems  are  installed to 1mvendor/bundle 22mnot your default system loca-
	   tion

	   In development, it's convenient to share the gems used in your  ap-
	   plication with other applications and other scripts that run on the
	   system.

	   In deployment, isolation is a more important default. In  addition,
	   the	user  deploying the application may not have permission to in-
	   stall gems to the system, or the web server may not have permission
	   to read them.

	   As  a result, 1mbundle install --deployment 22minstalls gems to the 1mven-0m
	   1mdor/bundle 22mdirectory in the application. This may be overridden us-
	   ing the 1m--path 22moption.



1mSUDO USAGE0m
       By default, Bundler installs gems to the same location as 1mgem install22m.

       In  some cases, that location may not be writable by your Unix user. In
       that case, Bundler will stage everything in a temporary directory, then
       ask  you  for  your  1msudo 22mpassword in order to copy the gems into their
       system location.

       From your perspective, this is identical to  installing	the  gems  di-
       rectly into the system.

       You should never use 1msudo bundle install22m. This is because several other
       steps in 1mbundle install 22mmust be performed as the current user:

       o   Updating your 1mGemfile.lock0m

       o   Updating your 1mvendor/cache22m, if necessary

       o   Checking out private git repositories using your user's SSH keys



       Of these three, the first  two  could  theoretically  be  performed  by
       1mchown22ming  the  resulting  files  to 1m$SUDO_USER22m. The third, however, can
       only be performed by invoking the 1mgit	22mcommand  as	the  current  user.
       Therefore,  git gems are downloaded and installed into 1m~/.bundle 22mrather
       than $GEM_HOME or $BUNDLE_PATH.

       As a result, you should run 1mbundle install 22mas  the	current  user,	and
       Bundler will ask for your password if it is needed to put the gems into
       their final location.

1mINSTALLING GROUPS0m
       By default, 1mbundle install 22mwill install all gems in all groups in  your
       Gemfile(5), except those declared for a different platform.

       However,  you  can  explicitly  tell Bundler to skip installing certain
       groups with the 1m--without 22moption. This option takes  a  space-separated
       list of groups.

       While  the 1m--without 22moption will skip 4minstalling24m the gems in the speci-
       fied groups, it will still 4mdownload24m those gems and use them to  resolve
       the dependencies of every gem in your Gemfile(5).

       This is so that installing a different set of groups on another machine
       (such as a production server) will not change  the  gems  and  versions
       that you have already developed and tested against.

       1mBundler offers a rock-solid guarantee that the third-party code you are0m
       1mrunning in development and testing is also the third-party code you are0m
       1mrunning  in  production. You can choose to exclude some of that code in0m
       1mdifferent environments, but you will never  be  caught  flat-footed  by0m
       1mdifferent versions of third-party code being used in different environ-0m
       1mments.0m

       For a simple illustration, consider the following Gemfile(5):



	   source 'https://rubygems.org'

	   gem 'sinatra'

	   group :production do
	     gem 'rack-perftools-profiler'
	   end



       In this case, 1msinatra 22mdepends on any version of Rack  (1m>=  1.022m),  while
       1mrack-perftools-profiler 22mdepends on 1.x (1m~> 1.022m).

       When  you  run  1mbundle  install --without production 22min development, we
       look at the dependencies of 1mrack-perftools-profiler 22mas well. That  way,
       you  do	not spend all your time developing against Rack 2.0, using new
       APIs unavailable in Rack 1.x, only to have Bundler switch to  Rack  1.2
       when the 1mproduction 22mgroup 4mis24m used.

       This  should  not cause any problems in practice, because we do not at-
       tempt to 1minstall 22mthe gems in the excluded groups, and only evaluate  as
       part of the dependency resolution process.

       This  also means that you cannot include different versions of the same
       gem in different groups, because doing so  would  result  in  different
       sets of dependencies used in development and production. Because of the
       vagaries of the dependency resolution  process,	this  usually  affects
       more  than the gems you list in your Gemfile(5), and can (surprisingly)
       radically change the gems you are using.

1mTHE GEMFILE.LOCK0m
       When you run 1mbundle install22m, Bundler will persist the  full  names	and
       versions  of all gems that you used (including dependencies of the gems
       specified in the Gemfile(5)) into a file called 1mGemfile.lock22m.

       Bundler uses this file in all subsequent calls to 1mbundle install22m, which
       guarantees that you always use the same exact code, even as your appli-
       cation moves across machines.

       Because of the way dependency resolution works, even a seemingly  small
       change (for instance, an update to a point-release of a dependency of a
       gem in your Gemfile(5)) can result in radically	different  gems  being
       needed to satisfy all dependencies.

       As  a  result, you 1mSHOULD 22mcheck your 1mGemfile.lock 22minto version control,
       in both applications and gems. If you do not, every machine that checks
       out your repository (including your production server) will resolve all
       dependencies  again,  which  will  result  in  different  versions   of
       third-party code being used if 1many 22mof the gems in the Gemfile(5) or any
       of their dependencies have been updated.

       When Bundler first shipped, the 1mGemfile.lock 22mwas included in the  1m.git-0m
       1mignore 22mfile included with generated gems. Over time, however, it became
       clear that this practice forces the pain of  broken  dependencies  onto
       new  contributors,  while leaving existing contributors potentially un-
       aware of the problem. Since 1mbundle install 22mis usually  the	first  step
       towards	a contribution, the pain of broken dependencies would discour-
       age new contributors from contributing. As a result,  we  have  revised
       our  guidance for gem authors to now recommend checking in the lock for
       gems.

1mCONSERVATIVE UPDATING0m
       When you make a change to the Gemfile(5) and then run  1mbundle	install22m,
       Bundler will update only the gems that you modified.

       In  other  words,  if  a  gem that you 1mdid not modify 22mworked before you
       called 1mbundle install22m, it will continue to use the exact same  versions
       of all dependencies as it used before the update.

       Let's take a look at an example. Here's your original Gemfile(5):



	   source 'https://rubygems.org'

	   gem 'actionpack', '2.3.8'
	   gem 'activemerchant'



       In  this  case, both 1mactionpack 22mand 1mactivemerchant 22mdepend on 1mactivesup-0m
       1mport22m. The 1mactionpack 22mgem depends on 1mactivesupport  2.3.8  22mand  1mrack  ~>0m
       1m1.1.022m,  while the 1mactivemerchant 22mgem depends on 1mactivesupport >= 2.3.222m,
       1mbraintree >= 2.0.022m, and 1mbuilder >= 2.0.022m.

       When the dependencies are  first  resolved,  Bundler  will  select  1mac-0m
       1mtivesupport  2.3.822m,  which	satisfies  the requirements of both gems in
       your Gemfile(5).

       Next, you modify your Gemfile(5) to:



	   source 'https://rubygems.org'

	   gem 'actionpack', '3.0.0.rc'
	   gem 'activemerchant'



       The 1mactionpack 3.0.0.rc 22mgem has a number of new dependencies,  and	up-
       dates  the  1mactivesupport  22mdependency to 1m= 3.0.0.rc 22mand the 1mrack 22mdepen-
       dency to 1m~> 1.2.122m.

       When you run 1mbundle install22m, Bundler notices that you changed  the	1mac-0m
       1mtionpack  22mgem,  but  not  the 1mactivemerchant 22mgem. It evaluates the gems
       currently being used to satisfy its requirements:

       1mactivesupport 2.3.80m
	      also used to satisfy a dependency in  1mactivemerchant22m,  which  is
	      not being updated

       1mrack ~> 1.1.00m
	      not currently being used to satisfy another dependency

       Because	you did not explicitly ask to update 1mactivemerchant22m, you would
       not expect it to suddenly stop working after updating 1mactionpack22m.  How-
       ever,  satisfying  the new 1mactivesupport 3.0.0.rc 22mdependency of action-
       pack requires updating one of its dependencies.

       Even though 1mactivemerchant 22mdeclares a very loose dependency that  theo-
       retically  matches  1mactivesupport 3.0.0.rc22m, Bundler treats gems in your
       Gemfile(5) that have not changed as an atomic unit together with  their
       dependencies. In this case, the 1mactivemerchant 22mdependency is treated as
       1mactivemerchant 1.7.1 + activesupport 2.3.822m, so 1mbundle install 22mwill  re-
       port that it cannot update 1mactionpack22m.

       To explicitly update 1mactionpack22m, including its dependencies which other
       gems in the Gemfile(5) still depend on, run  1mbundle  update  actionpack0m
       (see 1mbundle update(1)22m).

       1mSummary22m:  In  general,  after  making  a change to the Gemfile(5) , you
       should first try to run 1mbundle install22m, which will	guarantee  that  no
       other gem in the Gemfile(5) is impacted by the change. If that does not
       work, run bundle update(1) 4mbundle-update.1.html24m.

1mSEE ALSO0m
       o   Gem	install  docs  4mhttp://guides.rubygems.org/rubygems-basics/#in-0m
	   4mstalling-gems0m

       o   Rubygems signing docs 4mhttp://guides.rubygems.org/security/0m






				 January 2019		     BUNDLE-INSTALL(1)