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BUNDLE-CONFIG(1) BUNDLE-CONFIG(1)

NAME

bundle-config - Set bundler configuration options

SYNOPSIS

bundle config [name [value]]

DESCRIPTION

This  command  allows you to interact with bundler's configuration sys-
tem. Bundler retrieves its configuration  from  the  local  application
(app/.bundle/config), environment variables, and the user's home direc-
tory (~/.bundle/config), in that order of priority.

Executing bundle config with no parameters will print  a  list  of  all
bundler configuration for the current bundle, and where that configura-
tion was set.

Executing bundle config <name> will print the value of that  configura-
tion setting, and where it was set.

Executing  bundle  config <name> <value> will set that configuration to
the value specified for all bundles executed as the current  user.  The
configuration  will  be  stored in ~/.bundle/config. If name already is
set, name will be overridden and user will be warned.

Executing bundle config --global  <name>  <value>  works  the  same  as
above.

Executing bundle config --local <name> <value> will set that configura-
tion to the local application. The  configuration  will  be  stored  in
app/.bundle/config.

Executing  bundle  config --delete <name> will delete the configuration
in both local and global  sources.  Not  compatible  with  --global  or
--local flag.

Executing bundle with the BUNDLE_IGNORE_CONFIG environment variable set
will cause it to ignore all configuration.

BUILD OPTIONS

You can use bundle config to give bundler the flags to pass to the  gem
installer every time bundler tries to install a particular gem.

A  very  common  example, the mysql gem, requires Snow Leopard users to
pass configuration flags to gem install to specify where  to  find  the
mysql_config executable.

    gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config

Since  the specific location of that executable can change from machine
to machine, you can specify these flags on a per-machine basis.

    bundle config build.mysql --with-mysql-config=/usr/local/mysql/bin/mysql_config

After running this command, every time bundler  needs  to  install  the
mysql gem, it will pass along the flags you specified.

CONFIGURATION KEYS

Configuration  keys  in  bundler have two forms: the canonical form and
the environment variable form.

For instance, passing the --without  flag  to  bundle  install(1)  bun-
dle-install.1.html  prevents  Bundler  from  installing  certain groups
specified in the Gemfile(5). Bundler persists this value  in  app/.bun-
dle/config  so that calls to Bundler.setup do not try to find gems from
the Gemfile that you didn't install. Additionally, subsequent calls  to
bundle  install(1) bundle-install.1.html remember this setting and skip
those groups.

The canonical form of this configuration is "without". To  convert  the
canonical  form  to  the  environment variable form, capitalize it, and
prepend BUNDLE_. The environment variable form  of  "without"  is  BUN-
DLE_WITHOUT.

LIST OF AVAILABLE KEYS

The  following  is  a list of all configuration keys and their purpose.
You can learn more about their  operation  in  bundle  install(1)  bun-
dle-install.1.html.

path (BUNDLE_PATH)
       The  location  on disk to install gems. Defaults to $GEM_HOME in
       development and vendor/bundler when --deployment is used

frozen (BUNDLE_FROZEN)
       Disallow changes to the Gemfile. Defaults to true when --deploy-
       ment is used.

without (BUNDLE_WITHOUT)
       A  :-separated  list  of  groups  whose  gems bundler should not
       install

bin (BUNDLE_BIN)
       Install executables from gems in the  bundle  to  the  specified
       directory. Defaults to false.

ssl_ca_cert (BUNDLE_SSL_CA_CERT)
       Path  to  a  designated CA certificate file or folder containing
       multiple certificates for trusted CAs in PEM format.

ssl_client_cert (BUNDLE_SSL_CLIENT_CERT)
       Path to a designated file containing a X.509 client  certificate
       and key in PEM format.

In  general, you should set these settings per-application by using the
applicable flag to the bundle install(1) bundle-install.1.html command.

You  can  set  them globally either via environment variables or bundle
config, whichever is preferable for your setup. If you use both,  envi-
ronment variables will take preference over global settings.

An additional setting is available only as an environment variable:

BUNDLE_GEMFILE
       The  name  of  the  file that bundler should use as the Gemfile.
       This location of this file also sets the root  of  the  project,
       which  is  used  to resolve relative paths in the Gemfile, among
       other things. By default, bundler will search up from  the  cur-
       rent working directory until it finds a Gemfile.

Bundler  will ignore any BUNDLE_GEMFILE entries in local or global con-
figuration files.

LOCAL GIT REPOS

Bundler also allows you  to  work  against  a  git  repository  locally
instead of using the remote version. This can be achieved by setting up
a local override:

    bundle config local.GEM_NAME /path/to/local/git/repository

For example, in order to use a local Rack repository, a developer could
call:

    bundle config local.rack ~/Work/git/rack

Now  instead of checking out the remote git repository, the local over-
ride will be used. Similar to a path source, every time the  local  git
repository  change, changes will be automatically picked up by Bundler.
This means a commit in the local git repo will update the  revision  in
the Gemfile.lock to the local git repo revision. This requires the same
attention as git submodules. Before pushing to the remote, you need  to
ensure the local override was pushed, otherwise you may point to a com-
mit that only exists in your local machine.

Bundler does many checks to ensure a developer won't work with  invalid
references.  Particularly,  we force a developer to specify a branch in
the Gemfile in order to use this feature. If the  branch  specified  in
the  Gemfile  and the current branch in the local git repository do not
match, Bundler will abort. This ensures  that  a  developer  is  always
working  against  the correct branches, and prevents accidental locking
to a different branch.

Finally, Bundler also ensures that the current  revision  in  the  Gem-
file.lock  exists  in  the local git repository. By doing this, Bundler
forces you to fetch the latest changes in the remotes.

MIRRORS OF GEM REPOSITORIES

Bundler supports overriding gem sources with mirrors. This  allows  you
to configure rubygems.org as the gem source in your Gemfile while still
using your mirror to fetch gems.

    bundle config mirror.http://rubygems.org http://rubygems-mirror.org

                           August 2014                 BUNDLE-CONFIG(1)

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