Minor enhancements:

• Fix ls-files matching regexp #3845
• Remove redundant bundler/setup require from spec_helper.rb generated by bundle gem #3791

Bug fixes:

• Deduplicate spec groups #3965
• Fix some cases of running bundler on a path including brackets #3854
• Don't warn when deinit'ing submodules #3969
• Make bundle clean --force leave default gem executables untouched #3907
• Prioritize path.system over path when it makes sense #3933
• Sort requirements in Gem::Requirement to succeed comparison with different order #3889
• Print bug report template to standard error #3924
• Restore bundle cache --all in all cases #3914
• Move shebang to the top of bin/console template #3927
• Fix platform issues when running under a frozen bundle #3909
• Fix deprecation messages for bundle install flags, the config should be --local as before #3917
• Look for absolute path when removing bundler/setup from RUBYOPT in Bundler.unbundled_env method #3877
• Fix incorrect re-resolution when path gem excluded and not available #3902
• Fix error when building error message in bundler/inline #3901
• Fix regression related to locked ruby #3900
• Expand load paths in standalone setup.rb file #3522
• Fix broken exception recovery code when installing plugins #3487
• Fix incorrect build info on development versions of bundler, and on bundler versions installed as a default gem #3778
• Avoid autoloading openssl to try help with jruby load service issues #3809
• Fix rake release pushing all local tags instead of only the release tag #3785
• Fix rake release aborting when credentials file is missing, even if properly configured through XDG #3783

Deprecations:

• Deprecate bundle cache --all flag #3932

Features:

• Add bundle fund command #3390

Documentation:

• Correct grammar in Gemfile docs #3990
• Fix typo in bundle pristine warning message #3959
• Improve human readable fallback version of CLI help messages #3921
• Note CLI flag deprecations in documentation #3915
• Update man page and deprecation warning for binstubs --all #3872

2.2.0.rc.1 (July 2, 2020)

Major enhancements:

• Windows support. There's still gotchas and unimplemented features, but a Windows CI is now enforced.
• Full multiplatform support. Bundler should now seamlessly handle multiplatform Gemfile or gems.rb files.

Features:

• bundle info now includes gem metadata #7376
• bundle list --without-group and bundle list --only-group now support space separated list of groups in addition to single groups #7404
• bundle gem now supports a --rubocop flag that adds the rubocop gem to the new gem layout #6455
• bundle gem now supports --test-unit in addition to rspec and minitest as a value for its --test option #5521
• bundle install now uses the available number of processors automatically for concurrent gem install, except for Windows where it still uses a single thread by default #3393 and #3718
• Report Gitlab CI within bundler user-agent string #3432
• Add bundle plugin uninstall #3482
• bundle gem now supports a --ci flag and a gem.ci configuration that adds CI config files for the main CI providers to the generated gem skeleton #3667
• Allow setting a tag prefix to be used by release tasks #3766

Minor enhancements:

• bundle outdated now prints output in columns for better readability #4474
• bundler's release rake task now prints a better message when not being logged in and trying to push a gem #7513
• BUNDLE_APP_CONFIG environment variable is now documented #7563
• Original exception is now reported when bundler fails to load OpenSSL #7527
• RVM specific instructions for recompiling ruby is no longer recommended when bundler fails to load OpenSSL #7597
• Improve resolver debugging out from resolver #7589 and #7590
• Clarify bundle config --local docs #3408
• Make sure to not "leak" to a different bundler install under any circumstances #3595
• Make sure users messing with $; doesn't affect us #3602
• Remove explicit psych activation which could potentially lead to packaging-specific issues #3638
• Deprecate --no-deployment flag and never recommend it #3657
• bundle gem test framework defaults to the gem.test setting and asks for a value without overwriting configuration if -t without a value is passed explicitly #3544
• bundle gem now ships with a default .rubocop.yml file and an offense free initial gem skeleton #3731, #3740, #3765
• Remove some requires that might workaround some autoloading issues on jruby #3771
• Unswallow an error that should make some random crashes on jruby easier to troubleshoot #3774

Bug fixes:

• Fix bundle pristine removing gems with local overrides. Be conservative by printing a warning and skipping the removal #7423
• Fix multiplaform resolution edge cases #7522 and #7578
• Fix ruby version conflicts not displaying the current ruby version 7559
• Fix Gemfile or gems.rb files containing :path gems using relative paths not working when the app is packaged as a jar with warbler #7614
• Fix config location edge case where if BUNDLE_APP_CONFIG is set to an absolute path like in official ruby docker images, and there's no Gemfile up in the directory hierarchy, bundler would end up using the default config location instead of the customized one #7622
• Fix error message about missing permissions recommending a deprecated command #7633
• Fix init_gems_rb setting being ignored by bundle gem #7629
• Fix "unresolvable warning" being printed on bundle install of multipliplatform Gemfile or gems.rb files without lockfiles, multiplatform is now managed automatically #7580
• Fix setting the number of --jobs to be one unit less than specified to the CLI #3393
• Fix extension building when the same git source specifies several gems with extensions #3475
• Fix uninitialized instance variable warning under ruby-head (2.8-dev) #3477
• Fix double chdir warning while installing a git gem with extensions #3479
• Fix some deprecations not showing up when CLI flags passed as --flag=value #3561
• Fix man pages display when bundler installed as a default gem #3562
• Fix bundler gem tasks not handling relative paths #3586
• Fix deprecation warnings when options the dashed names are used, such as --no-prune #3623
• Fix crash related to bundler gem activation under old rubygems version (2.6.1 or older) #3626
• Avoid stack overflow inside StubSpecification on some edge cases #3635
• Fix bundle remove with multiline gem specifications #3400
• Fix bundle info not informing about deleted gems as opposed to old bundle show #3509
• The --no-deployment flag to bundle install was deprecated just like the other flags that rely on their value being remembered #3657
• Fix bundle install unintentionally copying with and without global config to local configuration #3666. This PR also address the BUNDLE_WITH environment variable unintentionally being persisted to configuration in a similar way (#3708)
• Fix race condition in bundle install that could "empty" exceptions to be raised #3669
• Fix --no-cache to bundle install being unintentionally deprecated #3688
• Avoid calling LoadError#message to fix performance regression in future ruby 2.8 #3762