ruby/rubygems bundler-v4.0.0 on GitHub

Features:

Support bundle install --lockfile option #9111
Add support for lockfile in Gemfile and bundle install --no-lock #9059
Add --ext=go to bundle gem #8183
Update Bundler::CurrentRuby::ALL_RUBY_VERSIONS #9058
Introduce bundle list --format=json #8728

Performance:

Run git operations in parallel to speed things up: #9100
Replace instance method look up in plugin installer #9094
Adjust the API_REQUEST_LIMIT to make less network roundtrip #9071

Enhancements:

Make BUNDLE_LOCKFILE environment variable have precedence over lockfile method in Gemfile #9146
Improve banner message for the default command #9145
Introduce install_or_cli_help and use it default bundle command #9136
Add go_gem/rake_task for Go native extension gem skeleton #9105
Warn users that bundle now display the help: #9092
Use DidYouMean::SpellChecker for gem suggestions in Bundler #3857
Update all vendored libraries to latest version #9089
We don't need to allow some warning now #9074
Support to embedded Pathname #9056
Enforce activation of irb when running with bundle console #9033
Update Magnus version in Rust extension gem template #9025
Add checksum of gems hosted on private servers: #9004
Loading support on Windows #8254
Improve error message when the same source is specified through gemspec and path #8460
Raise an error in frozen mode if some registry gems have empty checksums #8888
Bump vendored thor to 1.4.0 #8883
Delay default path and global cache changes to Bundler 5 #8867
Fix spacing in bundle gem newgem.gemspec.tt #8865
Add some missing deprecation messages #8844

Bug fixes:

Fixed checksums generation issue when no source is specified #9133
Check for file existence before deletion from cache #9095
Use method_defined?(:method, false) #9098
Handle BUNDLER_VERSION being set to an empty string #6928
Fix bundle install when the Gemfile contains "install_if" git gems: #8992
Fix installation issue related to path sources and precompiled gems #8973
Fix outdated lockfile during bundle lock when source changes #8962
Raise error on missing version file #8963
Fix bundle cache --frozen and bundle cache --no-prune not printing a deprecation message #8926
Fix local installation incorrectly forced if there's a vendor/cache directory and frozen mode is set #8925
Fix bundle lock --update <gem> with --lockfile flag updating all gems #8922
Fix bundle show --verbose and recommend it as an alternative to bundle show --outdated #8915
Fix bundle cache --no-all not printing a deprecation warning #8912
Fix bundle update foo unable to update foo in an edge case #8897
Fix Bundler printing more flags than actually passed in verbose mode #8914
Fix bundler failing to install sorbet-static in truffleruby when there's no lockfile #8872
Cancel deprecation of --force flag to bundle install and bundle update #8843

Security:

Bump up vendored URI to 1.0.4 #9031

Breaking changes:

Fix triple spacing when generating lockfile #9076
Hide patchlevel from lockfile #7772
Remove bundler_4_mode #9038
Pick and add extra changes for 4.0.0 version #9018
Replaced Bundler::SharedHelpers.major_deprecation to feature_removed! or feature_deprecated! #9016
Removed legacy_check option from SpecSet#for #9015
Make update_requires_all_flag to settings #9011
Make default cli command settings #9010
Make global_gem_cache flag to settings #9009
Consolidate removal of Bundler.rubygems.all_specs #9008
Consolidate removal of Bundler::SpecSet#- and Bundler::SpecSet#<< #9007
Replaced Bundler.feature_flag.plugins? to Bundler.settings #9006
Make bundle show --outdated raise an error #8980
Make --local-git flag to bundle plugin install raise an error #8979
Switch cache_all to be true by default #8975
Completely forbid passing --ext to bundle gem without a value #8976
Switch lockfile_checksums to be true by default #8981
Make bundle install --binstubs raise an error #8978
Make bundle remove --install raise an error #8977
Remove support for multiple global sources in Gemfile & lockfile #8968
Remove allow_offline_install setting #8969
Completely remove --rubocop flag to bundle gem, and related configuration #8967
Completely remove all remembered CLI flags #8958
Remove implementation of deployment, capistrano and vlad entrypoints #8957
Remove deprecated Bundler.*clean*, and Bundler.environment helpers #8924
Remove deprecated bundle viz and bundle inject commands #8923
Removed to workaround for Bundler 2.2 #8903

Documentation:

Unified UPGRADING.md and extract blog.rubygems.org #9148
Remove italic formatting from changelog section headers #9128
Small clarifications to Bundler 4 upgrade docs #8964
Improve documentation of bundle doctor, bundle plugin, and bundle config #8919
Make sure all CLI flags and subcommands are documented #8861
Clarify documentation about new default gem installation directory in Bundler 4 #8857
Use mailto link in Code of Conduct #8849
Update Code of Conduct email to conduct@rubygems.org #8848
Add missing link to irb repo in DEBUGGING.md #8842