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ruby--ruby/man/bundle-config.1.txt
hsbt 68ddd4d300 Merge Bundler 2.1.0.pre.1 as developed version from upstream. 
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BUNDLE-CONFIG(1) BUNDLE-CONFIG(1)
NAME
bundle-config - Set bundler configuration options
SYNOPSIS
bundle config [list|get|set|unset] [name [value]]
DESCRIPTION
This command allows you to interact with Bundler's configuration sys-
tem.
Bundler loads configuration settings in this order:
1. Local config (app/.bundle/config)
2. Environmental variables (ENV)
3. Global config (~/.bundle/config)
4. Bundler default config
Executing bundle config list with will print a list of all bundler con-
figuration for the current bundle, and where that configuration was
set.
Executing bundle config get <name> will print the value of that config-
uration setting, and where it was set.
Executing bundle config set <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 set --global <name> <value> works the same as
above.
Executing bundle config set --local <name> <value> will set that con-
figuration to the local application. The configuration will be stored
in app/.bundle/config.
Executing bundle config unset <name> will delete the configuration in
both local and global sources.
Executing bundle config unset --global <name> will delete the configu-
ration only from the user configuration.
Executing bundle config unset --local <name> <value> will delete the
configuration only from the local application.
Executing bundle with the BUNDLE_IGNORE_CONFIG environment variable set
will cause it to ignore all configuration.
Executing bundle config set disable_multisource true upgrades the warn-
ing about the Gemfile containing multiple primary sources to an error.
Executing bundle config unset disable_multisource downgrades this error
to a warning.
REMEMBERING OPTIONS
Flags passed to bundle install or the Bundler runtime, such as --path
foo or --without production, are not remembered between commands. If
these options must be remembered, they must be set using bundle config
(e.g., bundle config set path foo).
The options that can be configured are:
bin Creates a directory (defaults to ~/bin) 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 PATH variable. For instance, if the rails gem comes with
a rails executable, this flag will create a bin/rails executable
that ensures that all referred dependencies will be resolved
using the bundled gems.
deployment
In deployment mode, Bundler will 'roll-out' the bundle for pro-
duction use. Please check carefully if you want to have this
option enabled in development or test environments.
path The location to install the specified gems to. This defaults to
Rubygems' setting. Bundler shares this location with Rubygems,
gem install ... will have gem installed there, too. Therefore,
gems installed without a --path ... setting will show up by
calling gem list. Accordingly, gems installed to other locations
will not get listed.
without
A space-separated list of groups referencing gems to skip during
installation.
with A space-separated list of groups referencing gems to include
during installation.
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 set 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.
Any periods in the configuration keys must be replaced with two under-
scores when setting it via environment variables. The configuration key
local.rack becomes the environment variable BUNDLE_LOCAL__RACK.
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.
o allow_bundler_dependency_conflicts (BUNDLE_ALLOW_BUNDLER_DEPEN-
DENCY_CONFLICTS): Allow resolving to specifications that have
dependencies on bundler that are incompatible with the running
Bundler version.
o allow_deployment_source_credential_changes (BUNDLE_ALLOW_DEPLOY-
MENT_SOURCE_CREDENTIAL_CHANGES): When in deployment mode, allow
changing the credentials to a gem's source. Ex:
https://some.host.com/gems/path/ -> https://user_name:pass-
word@some.host.com/gems/path
o allow_offline_install (BUNDLE_ALLOW_OFFLINE_INSTALL): Allow Bundler
to use cached data when installing without network access.
o auto_clean_without_path (BUNDLE_AUTO_CLEAN_WITHOUT_PATH): Automati-
cally run bundle clean after installing when an explicit path has
not been set and Bundler is not installing into the system gems.
o auto_install (BUNDLE_AUTO_INSTALL): Automatically run bundle
install when gems are missing.
o bin (BUNDLE_BIN): Install executables from gems in the bundle to
the specified directory. Defaults to false.
o cache_all (BUNDLE_CACHE_ALL): Cache all gems, including path and
git gems.
o cache_all_platforms (BUNDLE_CACHE_ALL_PLATFORMS): Cache gems for
all platforms.
o cache_path (BUNDLE_CACHE_PATH): The directory that bundler will
place cached gems in when running bundle package, and that bundler
will look in when installing gems. Defaults to vendor/bundle.
o clean (BUNDLE_CLEAN): Whether Bundler should run bundle clean auto-
matically after bundle install.
o console (BUNDLE_CONSOLE): The console that bundle console starts.
Defaults to irb.
o default_install_uses_path (BUNDLE_DEFAULT_INSTALL_USES_PATH):
Whether a bundle install without an explicit --path argument
defaults to installing gems in .bundle.
o deployment (BUNDLE_DEPLOYMENT): Disallow changes to the Gemfile.
When the Gemfile is changed and the lockfile has not been updated,
running Bundler commands will be blocked.
o disable_checksum_validation (BUNDLE_DISABLE_CHECKSUM_VALIDATION):
Allow installing gems even if they do not match the checksum pro-
vided by RubyGems.
o disable_exec_load (BUNDLE_DISABLE_EXEC_LOAD): Stop Bundler from
using load to launch an executable in-process in bundle exec.
o disable_local_branch_check (BUNDLE_DISABLE_LOCAL_BRANCH_CHECK):
Allow Bundler to use a local git override without a branch speci-
fied in the Gemfile.
o disable_multisource (BUNDLE_DISABLE_MULTISOURCE): When set, Gem-
files containing multiple sources will produce errors instead of
warnings. Use bundle config unset disable_multisource to unset.
o disable_platform_warnings (BUNDLE_DISABLE_PLATFORM_WARNINGS): Dis-
able warnings during bundle install when a dependency is unused on
the current platform.
o disable_shared_gems (BUNDLE_DISABLE_SHARED_GEMS): Stop Bundler from
accessing gems installed to RubyGems' normal location.
o disable_version_check (BUNDLE_DISABLE_VERSION_CHECK): Stop Bundler
from checking if a newer Bundler version is available on
rubygems.org.
o error_on_stderr (BUNDLE_ERROR_ON_STDERR): Print Bundler errors to
stderr.
o force_ruby_platform (BUNDLE_FORCE_RUBY_PLATFORM): Ignore the cur-
rent machine's platform and install only ruby platform gems. As a
result, gems with native extensions will be compiled from source.
o frozen (BUNDLE_FROZEN): Disallow changes to the Gemfile. When the
Gemfile is changed and the lockfile has not been updated, running
Bundler commands will be blocked. Defaults to true when --deploy-
ment is used.
o gem.push_key (BUNDLE_GEM__PUSH_KEY): Sets the --key parameter for
gem push when using the rake release command with a private gem-
stash server.
o gemfile (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 Gem-
file, among other things. By default, bundler will search up from
the current working directory until it finds a Gemfile.
o global_gem_cache (BUNDLE_GLOBAL_GEM_CACHE): Whether Bundler should
cache all gems globally, rather than locally to the installing Ruby
installation.
o global_path_appends_ruby_scope (BUN-
DLE_GLOBAL_PATH_APPENDS_RUBY_SCOPE): Whether Bundler should append
the Ruby scope (e.g. engine and ABI version) to a globally-config-
ured path.
o ignore_messages (BUNDLE_IGNORE_MESSAGES): When set, no post install
messages will be printed. To silence a single gem, use dot notation
like ignore_messages.httparty true.
o init_gems_rb (BUNDLE_INIT_GEMS_RB) Generate a gems.rb instead of a
Gemfile when running bundle init.
o jobs (BUNDLE_JOBS): The number of gems Bundler can install in par-
allel. Defaults to 1.
o no_install (BUNDLE_NO_INSTALL): Whether bundle package should skip
installing gems.
o no_prune (BUNDLE_NO_PRUNE): Whether Bundler should leave outdated
gems unpruned when caching.
o only_update_to_newer_versions (BUNDLE_ONLY_UPDATE_TO_NEWER_VER-
SIONS): During bundle update, only resolve to newer versions of the
gems in the lockfile.
o path (BUNDLE_PATH): The location on disk where all gems in your
bundle will be located regardless of $GEM_HOME or $GEM_PATH values.
Bundle gems not found in this location will be installed by bundle
install. Defaults to Gem.dir. When --deployment is used, defaults
to vendor/bundle.
o path.system (BUNDLE_PATH__SYSTEM): Whether Bundler will install
gems into the default system path (Gem.dir).
o path_relative_to_cwd (BUNDLE_PATH_RELATIVE_TO_CWD) Makes --path
relative to the CWD instead of the Gemfile.
o plugins (BUNDLE_PLUGINS): Enable Bundler's experimental plugin sys-
tem.
o prefer_gems_rb (BUNDLE_PREFER_GEMS_RB) Prefer gems.rb to Gemfile
when Bundler is searching for a Gemfile.
o prefer_patch (BUNDLE_PREFER_PATCH): Prefer updating only to next
patch version during updates. Makes bundle update calls equivalent
to bundler update --patch.
o print_only_version_number (BUNDLE_PRINT_ONLY_VERSION_NUMBER) Print
only version number from bundler --version.
o redirect (BUNDLE_REDIRECT): The number of redirects allowed for
network requests. Defaults to 5.
o retry (BUNDLE_RETRY): The number of times to retry failed network
requests. Defaults to 3.
o setup_makes_kernel_gem_public (BUNDLE_SETUP_MAKES_KERNEL_GEM_PUB-
LIC): Have Bundler.setup make the Kernel#gem method public, even
though RubyGems declares it as private.
o shebang (BUNDLE_SHEBANG): The program name that should be invoked
for generated binstubs. Defaults to the ruby install name used to
generate the binstub.
o silence_deprecations (BUNDLE_SILENCE_DEPRECATIONS): Whether Bundler
should silence deprecation warnings for behavior that will be
changed in the next major version.
o silence_root_warning (BUNDLE_SILENCE_ROOT_WARNING): Silence the
warning Bundler prints when installing gems as root.
o skip_default_git_sources (BUNDLE_SKIP_DEFAULT_GIT_SOURCES): Whether
Bundler should skip adding default git source shortcuts to the Gem-
file DSL.
o specific_platform (BUNDLE_SPECIFIC_PLATFORM): Allow bundler to
resolve for the specific running platform and store it in the lock-
file, instead of only using a generic platform. A specific platform
is the exact platform triple reported by Gem::Platform.local, such
as x86_64-darwin-16 or universal-java-1.8. On the other hand,
generic platforms are those such as ruby, mswin, or java. In this
example, x86_64-darwin-16 would map to ruby and universal-java-1.8
to java.
o ssl_ca_cert (BUNDLE_SSL_CA_CERT): Path to a designated CA certifi-
cate file or folder containing multiple certificates for trusted
CAs in PEM format.
o ssl_client_cert (BUNDLE_SSL_CLIENT_CERT): Path to a designated file
containing a X.509 client certificate and key in PEM format.
o ssl_verify_mode (BUNDLE_SSL_VERIFY_MODE): The SSL verification mode
Bundler uses when making HTTPS requests. Defaults to verify peer.
o suppress_install_using_messages (BUNDLE_SUPPRESS_INSTALL_USING_MES-
SAGES): Avoid printing Using ... messages during installation when
the version of a gem has not changed.
o system_bindir (BUNDLE_SYSTEM_BINDIR): The location where RubyGems
installs binstubs. Defaults to Gem.bindir.
o timeout (BUNDLE_TIMEOUT): The seconds allowed before timing out for
network requests. Defaults to 10.
o unlock_source_unlocks_spec (BUNDLE_UNLOCK_SOURCE_UNLOCKS_SPEC):
Whether running bundle update --source NAME unlocks a gem with the
given name. Defaults to true.
o update_requires_all_flag (BUNDLE_UPDATE_REQUIRES_ALL_FLAG) Require
passing --all to bundle update when everything should be updated,
and disallow passing no options to bundle update.
o user_agent (BUNDLE_USER_AGENT): The custom user agent fragment
Bundler includes in API requests.
o with (BUNDLE_WITH): A :-separated list of groups whose gems bundler
should install.
o without (BUNDLE_WITHOUT): A :-separated list of groups whose gems
bundler should not install.
In general, you should set these settings per-application by using the
applicable flag to the bundle install(1) bundle-install.1.html or bun-
dle package(1) bundle-package.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.
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 set local.GEM_NAME /path/to/local/git/repository
For example, in order to use a local Rack repository, a developer could
call:
bundle config set 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. You'll also need to CGI
escape your usernames and passwords as well.
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 SOURCES
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 set mirror.SOURCE_URL MIRROR_URL
For example, to use a mirror of rubygems.org hosted at rubygems-mir-
ror.org:
bundle config set mirror.http://rubygems.org http://rubygems-mirror.org
Each mirror also provides a fallback timeout setting. If the mirror
does not respond within the fallback timeout, Bundler will try to use
the original server instead of the mirror.
bundle config set mirror.SOURCE_URL.fallback_timeout TIMEOUT
For example, to fall back to rubygems.org after 3 seconds:
bundle config set mirror.https://rubygems.org.fallback_timeout 3
The default fallback timeout is 0.1 seconds, but the setting can cur-
rently only accept whole seconds (for example, 1, 15, or 30).
CREDENTIALS FOR GEM SOURCES
Bundler allows you to configure credentials for any gem source, which
allows you to avoid putting secrets into your Gemfile.
bundle config set SOURCE_HOSTNAME USERNAME:PASSWORD
For example, to save the credentials of user claudette for the gem
source at gems.longerous.com, you would run:
bundle config set gems.longerous.com claudette:s00pers3krit
Or you can set the credentials as an environment variable like this:
export BUNDLE_GEMS__LONGEROUS__COM="claudette:s00pers3krit"
For gems with a git source with HTTP(S) URL you can specify credentials
like so:
bundle config set https://github.com/bundler/bundler.git username:password
Or you can set the credentials as an environment variable like so:
export BUNDLE_GITHUB__COM=username:password
This is especially useful for private repositories on hosts such as
Github, where you can use personal OAuth tokens:
export BUNDLE_GITHUB__COM=abcd0123generatedtoken:x-oauth-basic
CONFIGURE BUNDLER DIRECTORIES
Bundler's home, config, cache and plugin directories are able to be
configured through environment variables. The default location for
Bundler's home directory is ~/.bundle, which all directories inherit
from by default. The following outlines the available environment vari-
ables and their default values
BUNDLE_USER_HOME : $HOME/.bundle
BUNDLE_USER_CACHE : $BUNDLE_USER_HOME/cache
BUNDLE_USER_CONFIG : $BUNDLE_USER_HOME/config
BUNDLE_USER_PLUGIN : $BUNDLE_USER_HOME/plugin
April 2019 BUNDLE-CONFIG(1)
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