Merge Bundler-2.2.7

44 files changed, 112 insertions, 84 deletions

diff --git a/lib/bundler/cli/cache.rb b/lib/bundler/cli/cache.rb
index c14c8877f0..9cd6133879 100644
--- a/lib/bundler/cli/cache.rb
+++ b/lib/bundler/cli/cache.rb
@@ -30,6 +30,7 @@ module Bundler
       require_relative "install"
       options = self.options.dup
       options["local"] = false if Bundler.settings[:cache_all_platforms]
+      options["no-cache"] = true
       Bundler::CLI::Install.new(options).run
     end
 
diff --git a/lib/bundler/definition.rb b/lib/bundler/definition.rb
index 7683047984..9f9a938dce 100644
--- a/lib/bundler/definition.rb
+++ b/lib/bundler/definition.rb
@@ -913,6 +913,7 @@ module Bundler
       metadata_dependencies.each do |dep|
         source_requirements[dep.name] = sources.metadata_source
       end
+      source_requirements[:default_bundler] = source_requirements["bundler"] || source_requirements[:default]
       source_requirements["bundler"] = sources.metadata_source # needs to come last to override
       source_requirements
     end
diff --git a/lib/bundler/feature_flag.rb b/lib/bundler/feature_flag.rb
index a92ec8756d..a1b443b042 100644
--- a/lib/bundler/feature_flag.rb
+++ b/lib/bundler/feature_flag.rb
@@ -27,7 +27,6 @@ module Bundler
 
     (1..10).each {|v| define_method("bundler_#{v}_mode?") { major_version >= v } }
 
-    settings_flag(:allow_bundler_dependency_conflicts) { bundler_3_mode? }
     settings_flag(:allow_offline_install) { bundler_3_mode? }
     settings_flag(:auto_clean_without_path) { bundler_3_mode? }
     settings_flag(:cache_all) { bundler_3_mode? }
diff --git a/lib/bundler/fetcher.rb b/lib/bundler/fetcher.rb
index 235eb9bbd3..0c81c54740 100644
--- a/lib/bundler/fetcher.rb
+++ b/lib/bundler/fetcher.rb
@@ -137,7 +137,6 @@ module Bundler
       end
 
       specs.each do |name, version, platform, dependencies, metadata|
-        next if name == "bundler"
         spec = if dependencies
           EndpointSpecification.new(name, version, platform, dependencies, metadata)
         else
diff --git a/lib/bundler/gem_helper.rb b/lib/bundler/gem_helper.rb
index 0acaa69f25..d3e30124f9 100644
--- a/lib/bundler/gem_helper.rb
+++ b/lib/bundler/gem_helper.rb
@@ -116,19 +116,21 @@ module Bundler
 
     def git_push(remote = nil)
       remote ||= default_remote
-      perform_git_push remote
+      perform_git_push "#{remote} refs/heads/#{current_branch}"
       perform_git_push "#{remote} refs/tags/#{version_tag}"
       Bundler.ui.confirm "Pushed git commits and release tag."
     end
 
     def default_remote
-      # We can replace this with `git branch --show-current` once we drop support for git < 2.22.0
-      current_branch = sh(%w[git rev-parse --abbrev-ref HEAD]).gsub(%r{\Aheads/}, "").strip
+      remote_for_branch, status = sh_with_status(%W[git config --get branch.#{current_branch}.remote])
+      return "origin" unless status.success?
 
-      remote_for_branch = sh(%W[git config --get branch.#{current_branch}.remote]).strip
-      return "origin" if remote_for_branch.empty?
+      remote_for_branch.strip
+    end
 
-      remote_for_branch
+    def current_branch
+      # We can replace this with `git branch --show-current` once we drop support for git < 2.22.0
+      sh(%w[git rev-parse --abbrev-ref HEAD]).gsub(%r{\Aheads/}, "").strip
     end
 
     def allowed_push_host
diff --git a/lib/bundler/installer.rb b/lib/bundler/installer.rb
index 048b0786a7..8d55784006 100644
--- a/lib/bundler/installer.rb
+++ b/lib/bundler/installer.rb
@@ -82,7 +82,6 @@ module Bundler
 
         if resolve_if_needed(options)
           ensure_specs_are_compatible!
-          warn_on_incompatible_bundler_deps
           load_plugins
           options.delete(:jobs)
         else
@@ -265,22 +264,6 @@ module Bundler
       end
     end
 
-    def warn_on_incompatible_bundler_deps
-      bundler_version = Gem::Version.create(Bundler::VERSION)
-      @definition.specs.each do |spec|
-        spec.dependencies.each do |dep|
-          next if dep.type == :development
-          next unless dep.name == "bundler".freeze
-          next if dep.requirement.satisfied_by?(bundler_version)
-
-          Bundler.ui.warn "#{spec.name} (#{spec.version}) has dependency" \
-            " #{SharedHelpers.pretty_dependency(dep)}" \
-            ", which is unsatisfied by the current bundler version #{VERSION}" \
-            ", so the dependency is being ignored"
-        end
-      end
-    end
-
     def install_in_parallel(size, standalone, force = false)
       spec_installations = ParallelInstaller.call(self, @definition.specs, size, standalone, force)
       spec_installations.each do |installation|
diff --git a/lib/bundler/installer/standalone.rb b/lib/bundler/installer/standalone.rb
index 0720d6d38a..11d5c490ab 100644
--- a/lib/bundler/installer/standalone.rb
+++ b/lib/bundler/installer/standalone.rb
@@ -15,6 +15,7 @@ module Bundler
         file.puts "ruby_engine = RUBY_ENGINE"
         file.puts "ruby_version = RbConfig::CONFIG[\"ruby_version\"]"
         file.puts "path = File.expand_path('..', __FILE__)"
+        file.puts reverse_rubygems_kernel_mixin
         paths.each do |path|
           file.puts %($:.unshift File.expand_path("\#{path}/#{path}"))
         end
@@ -48,5 +49,18 @@ module Bundler
       error_message = "#{spec.name} #{spec.version} has an invalid gemspec"
       raise Gem::InvalidSpecificationException.new(error_message)
     end
+
+    def reverse_rubygems_kernel_mixin
+      <<~END
+      kernel = (class << ::Kernel; self; end)
+      [kernel, ::Kernel].each do |k|
+        if k.private_method_defined?(:gem_original_require)
+          k.send(:remove_method, :require)
+          k.send(:define_method, :require, k.instance_method(:gem_original_require))
+          k.send(:private, :require)
+        end
+      end
+      END
+    end
   end
 end
diff --git a/lib/bundler/lazy_specification.rb b/lib/bundler/lazy_specification.rb
index 1081910816..59689c609c 100644
--- a/lib/bundler/lazy_specification.rb
+++ b/lib/bundler/lazy_specification.rb
@@ -140,7 +140,7 @@ module Bundler
     # explicitly add a more specific platform.
     #
     def ruby_platform_materializes_to_ruby_platform?
-      !Bundler.most_specific_locked_platform?(Gem::Platform::RUBY)
+      !Bundler.most_specific_locked_platform?(Gem::Platform::RUBY) || Bundler.settings[:force_ruby_platform]
     end
   end
 end
diff --git a/lib/bundler/man/bundle-add.1 b/lib/bundler/man/bundle-add.1
index 985d3be8b1..b44295b2d3 100644
--- a/lib/bundler/man/bundle-add.1
+++ b/lib/bundler/man/bundle-add.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-ADD" "1" "November 2020" "" ""
+.TH "BUNDLE\-ADD" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-add\fR \- Add gem to the Gemfile and run bundle install
diff --git a/lib/bundler/man/bundle-binstubs.1 b/lib/bundler/man/bundle-binstubs.1
index 75d6b98c96..99876d023e 100644
--- a/lib/bundler/man/bundle-binstubs.1
+++ b/lib/bundler/man/bundle-binstubs.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-BINSTUBS" "1" "November 2020" "" ""
+.TH "BUNDLE\-BINSTUBS" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-binstubs\fR \- Install the binstubs of the listed gems
diff --git a/lib/bundler/man/bundle-cache.1 b/lib/bundler/man/bundle-cache.1
index 313359d78f..3b3c6f9734 100644
--- a/lib/bundler/man/bundle-cache.1
+++ b/lib/bundler/man/bundle-cache.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-CACHE" "1" "November 2020" "" ""
+.TH "BUNDLE\-CACHE" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-cache\fR \- Package your needed \fB\.gem\fR files into your application
diff --git a/lib/bundler/man/bundle-check.1 b/lib/bundler/man/bundle-check.1
index 3f1a4bc329..4436c3e971 100644
--- a/lib/bundler/man/bundle-check.1
+++ b/lib/bundler/man/bundle-check.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-CHECK" "1" "November 2020" "" ""
+.TH "BUNDLE\-CHECK" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-check\fR \- Verifies if dependencies are satisfied by installed gems
diff --git a/lib/bundler/man/bundle-clean.1 b/lib/bundler/man/bundle-clean.1
index 1c111ae906..b7e882ecbf 100644
--- a/lib/bundler/man/bundle-clean.1
+++ b/lib/bundler/man/bundle-clean.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-CLEAN" "1" "November 2020" "" ""
+.TH "BUNDLE\-CLEAN" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-clean\fR \- Cleans up unused gems in your bundler directory
diff --git a/lib/bundler/man/bundle-config.1 b/lib/bundler/man/bundle-config.1
index 39b32e7496..7a4a16c43e 100644
--- a/lib/bundler/man/bundle-config.1
+++ b/lib/bundler/man/bundle-config.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-CONFIG" "1" "November 2020" "" ""
+.TH "BUNDLE\-CONFIG" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-config\fR \- Set bundler configuration options
@@ -136,9 +136,6 @@ Any periods in the configuration keys must be replaced with two underscores when
 The following is a list of all configuration keys and their purpose\. You can learn more about their operation in bundle install(1) \fIbundle\-install\.1\.html\fR\.
 .
 .IP "\(bu" 4
-\fBallow_bundler_dependency_conflicts\fR (\fBBUNDLE_ALLOW_BUNDLER_DEPENDENCY_CONFLICTS\fR): Allow resolving to specifications that have dependencies on \fBbundler\fR that are incompatible with the running Bundler version\.
-.
-.IP "\(bu" 4
 \fBallow_deployment_source_credential_changes\fR (\fBBUNDLE_ALLOW_DEPLOYMENT_SOURCE_CREDENTIAL_CHANGES\fR): When in deployment mode, allow changing the credentials to a gem\'s source\. Ex: \fBhttps://some\.host\.com/gems/path/\fR \-> \fBhttps://user_name:password@some\.host\.com/gems/path\fR
 .
 .IP "\(bu" 4
@@ -184,6 +181,9 @@ The following is a list of all configuration keys and their purpose\. You can le
 \fBdisable_local_branch_check\fR (\fBBUNDLE_DISABLE_LOCAL_BRANCH_CHECK\fR): Allow Bundler to use a local git override without a branch specified in the Gemfile\.
 .
 .IP "\(bu" 4
+\fBdisable_local_revision_check\fR (\fBBUNDLE_DISABLE_LOCAL_REVISION_CHECK\fR): Allow Bundler to use a local git override without checking if the revision present in the lockfile is present in the repository\.
+.
+.IP "\(bu" 4
 \fBdisable_multisource\fR (\fBBUNDLE_DISABLE_MULTISOURCE\fR): When set, Gemfiles containing multiple sources will produce errors instead of warnings\. Use \fBbundle config unset disable_multisource\fR to unset\.
 .
 .IP "\(bu" 4
diff --git a/lib/bundler/man/bundle-config.1.ronn b/lib/bundler/man/bundle-config.1.ronn
index 462edf7844..b3c4e59a78 100644
--- a/lib/bundler/man/bundle-config.1.ronn
+++ b/lib/bundler/man/bundle-config.1.ronn
@@ -133,9 +133,6 @@ the environment variable `BUNDLE_LOCAL__RACK`.
 The following is a list of all configuration keys and their purpose. You can
 learn more about their operation in [bundle install(1)](bundle-install.1.html).
 
-* `allow_bundler_dependency_conflicts` (`BUNDLE_ALLOW_BUNDLER_DEPENDENCY_CONFLICTS`):
-   Allow resolving to specifications that have dependencies on `bundler` that
-   are incompatible with the running Bundler version.
 * `allow_deployment_source_credential_changes` (`BUNDLE_ALLOW_DEPLOYMENT_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:password@some.host.com/gems/path`
@@ -178,6 +175,9 @@ learn more about their operation in [bundle install(1)](bundle-install.1.html).
 * `disable_local_branch_check` (`BUNDLE_DISABLE_LOCAL_BRANCH_CHECK`):
    Allow Bundler to use a local git override without a branch specified in the
    Gemfile.
+* `disable_local_revision_check` (`BUNDLE_DISABLE_LOCAL_REVISION_CHECK`):
+   Allow Bundler to use a local git override without checking if the revision
+   present in the lockfile is present in the repository.
 * `disable_multisource` (`BUNDLE_DISABLE_MULTISOURCE`):
    When set, Gemfiles containing multiple sources will produce errors
    instead of warnings.
diff --git a/lib/bundler/man/bundle-doctor.1 b/lib/bundler/man/bundle-doctor.1
index 39841c8032..2923517608 100644
--- a/lib/bundler/man/bundle-doctor.1
+++ b/lib/bundler/man/bundle-doctor.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-DOCTOR" "1" "November 2020" "" ""
+.TH "BUNDLE\-DOCTOR" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-doctor\fR \- Checks the bundle for common problems
diff --git a/lib/bundler/man/bundle-exec.1 b/lib/bundler/man/bundle-exec.1
index b8c1b308c3..aa0c509278 100644
--- a/lib/bundler/man/bundle-exec.1
+++ b/lib/bundler/man/bundle-exec.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-EXEC" "1" "November 2020" "" ""
+.TH "BUNDLE\-EXEC" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-exec\fR \- Execute a command in the context of the bundle
diff --git a/lib/bundler/man/bundle-gem.1 b/lib/bundler/man/bundle-gem.1
index 65c35615c5..c1abf90f5c 100644
--- a/lib/bundler/man/bundle-gem.1
+++ b/lib/bundler/man/bundle-gem.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-GEM" "1" "November 2020" "" ""
+.TH "BUNDLE\-GEM" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-gem\fR \- Generate a project skeleton for creating a rubygem
diff --git a/lib/bundler/man/bundle-info.1 b/lib/bundler/man/bundle-info.1
index b20396d273..c715af4063 100644
--- a/lib/bundler/man/bundle-info.1
+++ b/lib/bundler/man/bundle-info.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-INFO" "1" "November 2020" "" ""
+.TH "BUNDLE\-INFO" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-info\fR \- Show information for the given gem in your bundle
diff --git a/lib/bundler/man/bundle-init.1 b/lib/bundler/man/bundle-init.1
index b6714730c4..6c8f441bdd 100644
--- a/lib/bundler/man/bundle-init.1
+++ b/lib/bundler/man/bundle-init.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-INIT" "1" "November 2020" "" ""
+.TH "BUNDLE\-INIT" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-init\fR \- Generates a Gemfile into the current working directory
diff --git a/lib/bundler/man/bundle-inject.1 b/lib/bundler/man/bundle-inject.1
index 9704eba89b..2342b44716 100644
--- a/lib/bundler/man/bundle-inject.1
+++ b/lib/bundler/man/bundle-inject.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-INJECT" "1" "November 2020" "" ""
+.TH "BUNDLE\-INJECT" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-inject\fR \- Add named gem(s) with version requirements to Gemfile
diff --git a/lib/bundler/man/bundle-install.1 b/lib/bundler/man/bundle-install.1
index 7c34f37cdd..c223185b6f 100644
--- a/lib/bundler/man/bundle-install.1
+++ b/lib/bundler/man/bundle-install.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-INSTALL" "1" "November 2020" "" ""
+.TH "BUNDLE\-INSTALL" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-install\fR \- Install the dependencies specified in your Gemfile
diff --git a/lib/bundler/man/bundle-list.1 b/lib/bundler/man/bundle-list.1
index d758e61a49..929b0f79f8 100644
--- a/lib/bundler/man/bundle-list.1
+++ b/lib/bundler/man/bundle-list.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-LIST" "1" "November 2020" "" ""
+.TH "BUNDLE\-LIST" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-list\fR \- List all the gems in the bundle
diff --git a/lib/bundler/man/bundle-lock.1 b/lib/bundler/man/bundle-lock.1
index a70043df00..bcf588a3cf 100644
--- a/lib/bundler/man/bundle-lock.1
+++ b/lib/bundler/man/bundle-lock.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-LOCK" "1" "November 2020" "" ""
+.TH "BUNDLE\-LOCK" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-lock\fR \- Creates / Updates a lockfile without installing
diff --git a/lib/bundler/man/bundle-open.1 b/lib/bundler/man/bundle-open.1
index 631280c969..27308ff624 100644
--- a/lib/bundler/man/bundle-open.1
+++ b/lib/bundler/man/bundle-open.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-OPEN" "1" "November 2020" "" ""
+.TH "BUNDLE\-OPEN" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-open\fR \- Opens the source directory for a gem in your bundle
diff --git a/lib/bundler/man/bundle-outdated.1 b/lib/bundler/man/bundle-outdated.1
index 66cfe1a5f7..40b23568d5 100644
--- a/lib/bundler/man/bundle-outdated.1
+++ b/lib/bundler/man/bundle-outdated.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-OUTDATED" "1" "November 2020" "" ""
+.TH "BUNDLE\-OUTDATED" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-outdated\fR \- List installed gems with newer versions available
diff --git a/lib/bundler/man/bundle-platform.1 b/lib/bundler/man/bundle-platform.1
index 9fda7cb92c..d0ec5c643c 100644
--- a/lib/bundler/man/bundle-platform.1
+++ b/lib/bundler/man/bundle-platform.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-PLATFORM" "1" "November 2020" "" ""
+.TH "BUNDLE\-PLATFORM" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-platform\fR \- Displays platform compatibility information
diff --git a/lib/bundler/man/bundle-pristine.1 b/lib/bundler/man/bundle-pristine.1
index 4561081746..9fd42d04a4 100644
--- a/lib/bundler/man/bundle-pristine.1
+++ b/lib/bundler/man/bundle-pristine.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-PRISTINE" "1" "November 2020" "" ""
+.TH "BUNDLE\-PRISTINE" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-pristine\fR \- Restores installed gems to their pristine condition
diff --git a/lib/bundler/man/bundle-remove.1 b/lib/bundler/man/bundle-remove.1
index b649f62673..366e5f4be2 100644
--- a/lib/bundler/man/bundle-remove.1
+++ b/lib/bundler/man/bundle-remove.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-REMOVE" "1" "November 2020" "" ""
+.TH "BUNDLE\-REMOVE" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-remove\fR \- Removes gems from the Gemfile
diff --git a/lib/bundler/man/bundle-show.1 b/lib/bundler/man/bundle-show.1
index 1b0608f75a..e2de241438 100644
--- a/lib/bundler/man/bundle-show.1
+++ b/lib/bundler/man/bundle-show.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-SHOW" "1" "November 2020" "" ""
+.TH "BUNDLE\-SHOW" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-show\fR \- Shows all the gems in your bundle, or the path to a gem
diff --git a/lib/bundler/man/bundle-update.1 b/lib/bundler/man/bundle-update.1
index f9922f6618..a78633bbf8 100644
--- a/lib/bundler/man/bundle-update.1
+++ b/lib/bundler/man/bundle-update.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-UPDATE" "1" "November 2020" "" ""
+.TH "BUNDLE\-UPDATE" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-update\fR \- Update your gems to the latest available versions
diff --git a/lib/bundler/man/bundle-viz.1 b/lib/bundler/man/bundle-viz.1
index 2f68f644bf..fead09e6ad 100644
--- a/lib/bundler/man/bundle-viz.1
+++ b/lib/bundler/man/bundle-viz.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-VIZ" "1" "November 2020" "" ""
+.TH "BUNDLE\-VIZ" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\-viz\fR \- Generates a visual dependency graph for your Gemfile
diff --git a/lib/bundler/man/bundle.1 b/lib/bundler/man/bundle.1
index 232752e914..50aa6e17c7 100644
--- a/lib/bundler/man/bundle.1
+++ b/lib/bundler/man/bundle.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE" "1" "November 2020" "" ""
+.TH "BUNDLE" "1" "January 2021" "" ""
 .
 .SH "NAME"
 \fBbundle\fR \- Ruby Dependency Management
diff --git a/lib/bundler/man/gemfile.5 b/lib/bundler/man/gemfile.5
index f501db2b66..3942806f75 100644
--- a/lib/bundler/man/gemfile.5
+++ b/lib/bundler/man/gemfile.5
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "GEMFILE" "5" "November 2020" "" ""
+.TH "GEMFILE" "5" "January 2021" "" ""
 .
 .SH "NAME"
 \fBGemfile\fR \- A format for describing gem dependencies for Ruby programs
diff --git a/lib/bundler/resolver.rb b/lib/bundler/resolver.rb
index 319f9bb137..8812ba5ede 100644
--- a/lib/bundler/resolver.rb
+++ b/lib/bundler/resolver.rb
@@ -37,7 +37,6 @@ module Bundler
       additional_base_requirements.each {|d| @base_dg.add_vertex(d.name, d) }
       @platforms = platforms
       @gem_version_promoter = gem_version_promoter
-      @allow_bundler_dependency_conflicts = Bundler.feature_flag.allow_bundler_dependency_conflicts?
       @use_gvp = Bundler.feature_flag.use_gem_version_promoter_for_major_updates? || !@gem_version_promoter.major?
       @lockfile_uses_separate_rubygems_sources = Bundler.feature_flag.disable_multisource?
     end
@@ -138,7 +137,6 @@ module Bundler
           nested.reduce([]) do |groups, (version, specs)|
             next groups if locked_requirement && !locked_requirement.satisfied_by?(version)
             spec_group = SpecGroup.new(specs)
-            spec_group.ignores_bundler_dependencies = @allow_bundler_dependency_conflicts
             groups << spec_group
           end
         else
@@ -165,10 +163,7 @@ module Bundler
           sg_ruby = sg.copy_for([Gem::Platform::RUBY])
           next unless sg_ruby
 
-          sg_ruby_deps = sg_ruby.dependencies_for_activated_platforms.map(&:dep)
-          sg_all_platforms_deps = sg_all_platforms.dependencies_for_activated_platforms.map(&:dep)
-
-          selected_sgs.insert(-2, sg_ruby) if sg_ruby_deps != sg_all_platforms_deps
+          selected_sgs.insert(-2, sg_ruby)
         end
         selected_sgs
       end
@@ -211,6 +206,10 @@ module Bundler
       requirement.matches_spec?(spec) || spec.source.is_a?(Source::Gemspec)
     end
 
+    def dependencies_equal?(dependencies, other_dependencies)
+      dependencies.map(&:dep) == other_dependencies.map(&:dep)
+    end
+
     def relevant_sources_for_vertex(vertex)
       if vertex.root?
         [@source_requirements[vertex.name]]
@@ -329,10 +328,16 @@ module Bundler
     def version_conflict_message(e)
       # only show essential conflicts, if possible
       conflicts = e.conflicts.dup
-      conflicts.delete_if do |_name, conflict|
-        deps = conflict.requirement_trees.map(&:last).flatten(1)
-        !Bundler::VersionRanges.empty?(*Bundler::VersionRanges.for_many(deps.map(&:requirement)))
+
+      if conflicts["bundler"]
+        conflicts.replace("bundler" => conflicts["bundler"])
+      else
+        conflicts.delete_if do |_name, conflict|
+          deps = conflict.requirement_trees.map(&:last).flatten(1)
+          !Bundler::VersionRanges.empty?(*Bundler::VersionRanges.for_many(deps.map(&:requirement)))
+        end
       end
+
       e = Molinillo::VersionConflict.new(conflicts, e.specification_provider) unless conflicts.empty?
 
       solver_name = "Bundler"
@@ -360,15 +365,25 @@ module Bundler
         :additional_message_for_conflict => lambda do |o, name, conflict|
           if name == "bundler"
             o << %(\n  Current Bundler version:\n    bundler (#{Bundler::VERSION}))
-            other_bundler_required = !conflict.requirement.requirement.satisfied_by?(Gem::Version.new(Bundler::VERSION))
-          end
 
-          if name == "bundler" && other_bundler_required
-            o << "\n"
-            o << "This Gemfile requires a different version of Bundler.\n"
-            o << "Perhaps you need to update Bundler by running `gem install bundler`?\n"
-          end
-          if conflict.locked_requirement
+            conflict_dependency = conflict.requirement
+            conflict_requirement = conflict_dependency.requirement
+            other_bundler_required = !conflict_requirement.satisfied_by?(Gem::Version.new(Bundler::VERSION))
+
+            if other_bundler_required
+              o << "\n\n"
+
+              candidate_specs = @source_requirements[:default_bundler].specs.search(conflict_dependency)
+              if candidate_specs.any?
+                target_version = candidate_specs.last.version
+                new_command = [File.basename($PROGRAM_NAME), "_#{target_version}_", *ARGV].join(" ")
+                o << "Your bundle requires a different version of Bundler than the one you're running.\n"
+                o << "Install the necessary version with `gem install bundler:#{target_version}` and rerun bundler using `#{new_command}`\n"
+              else
+                o << "Your bundle requires a different version of Bundler than the one you're running, and that version could not be found.\n"
+              end
+            end
+          elsif conflict.locked_requirement
             o << "\n"
             o << %(Running `bundle update` will rebuild your snapshot from scratch, using only\n)
             o << %(the gems in your Gemfile, which may resolve the conflict.\n)
diff --git a/lib/bundler/resolver/spec_group.rb b/lib/bundler/resolver/spec_group.rb
index 1042a2a4a0..7fba5043a7 100644
--- a/lib/bundler/resolver/spec_group.rb
+++ b/lib/bundler/resolver/spec_group.rb
@@ -6,7 +6,7 @@ module Bundler
       include GemHelpers
 
       attr_accessor :name, :version, :source
-      attr_accessor :ignores_bundler_dependencies, :activated_platforms
+      attr_accessor :activated_platforms
 
       def initialize(all_specs)
         @all_specs = all_specs
@@ -20,7 +20,6 @@ module Bundler
         @specs        = Hash.new do |specs, platform|
           specs[platform] = select_best_platform_match(all_specs, platform)
         end
-        @ignores_bundler_dependencies = true
       end
 
       def to_specs
@@ -41,7 +40,6 @@ module Bundler
         return unless platforms.any?
 
         copied_sg = self.class.new(@all_specs)
-        copied_sg.ignores_bundler_dependencies = @ignores_bundler_dependencies
         copied_sg.activated_platforms = platforms
         copied_sg
       end
@@ -98,7 +96,6 @@ module Bundler
           if spec = specs.first
             spec.dependencies.each do |dep|
               next if dep.type == :development
-              next if @ignores_bundler_dependencies && dep.name == "bundler".freeze
               dependencies[platform] << DepProxy.get_proxy(dep, platform)
             end
           end
diff --git a/lib/bundler/settings.rb b/lib/bundler/settings.rb
index 1c669491f6..749e4eb60e 100644
--- a/lib/bundler/settings.rb
+++ b/lib/bundler/settings.rb
@@ -7,7 +7,6 @@ module Bundler
     autoload :Validator, File.expand_path("settings/validator", __dir__)
 
     BOOL_KEYS = %w[
-      allow_bundler_dependency_conflicts
       allow_deployment_source_credential_changes
       allow_offline_install
       auto_clean_without_path
@@ -20,6 +19,7 @@ module Bundler
       disable_checksum_validation
       disable_exec_load
       disable_local_branch_check
+      disable_local_revision_check
       disable_multisource
       disable_shared_gems
       disable_version_check
diff --git a/lib/bundler/source/git.rb b/lib/bundler/source/git.rb
index a3e6439d5d..fb13ca0578 100644
--- a/lib/bundler/source/git.rb
+++ b/lib/bundler/source/git.rb
@@ -148,7 +148,7 @@ module Bundler
 
         changed = cached_revision && cached_revision != git_proxy.revision
 
-        if changed && !@unlocked && !git_proxy.contains?(cached_revision)
+        if !Bundler.settings[:disable_local_revision_check] && changed && !@unlocked && !git_proxy.contains?(cached_revision)
           raise GitError, "The Gemfile lock is pointing to revision #{shortref_for_display(cached_revision)} " \
             "but the current branch in your local override for #{name} does not contain such commit. " \
             "Please make sure your branch is up to date."
diff --git a/lib/bundler/source/rubygems.rb b/lib/bundler/source/rubygems.rb
index a6ac5613d0..5b89b1645d 100644
--- a/lib/bundler/source/rubygems.rb
+++ b/lib/bundler/source/rubygems.rb
@@ -353,7 +353,6 @@ module Bundler
       def installed_specs
         @installed_specs ||= Index.build do |idx|
           Bundler.rubygems.all_specs.reverse_each do |spec|
-            next if spec.name == "bundler"
             spec.source = self
             if Bundler.rubygems.spec_missing_extensions?(spec, false)
               Bundler.ui.debug "Source #{self} is ignoring #{spec} because it is missing extensions"
diff --git a/lib/bundler/vendor/molinillo/lib/molinillo/delegates/specification_provider.rb b/lib/bundler/vendor/molinillo/lib/molinillo/delegates/specification_provider.rb
index ec9c770a28..f8c695c1ed 100644
--- a/lib/bundler/vendor/molinillo/lib/molinillo/delegates/specification_provider.rb
+++ b/lib/bundler/vendor/molinillo/lib/molinillo/delegates/specification_provider.rb
@@ -26,6 +26,13 @@ module Bundler::Molinillo
         end
       end
 
+      # (see Bundler::Molinillo::SpecificationProvider#dependencies_equal?)
+      def dependencies_equal?(dependencies, other_dependencies)
+        with_no_such_dependency_error_handling do
+          specification_provider.dependencies_equal?(dependencies, other_dependencies)
+        end
+      end
+
       # (see Bundler::Molinillo::SpecificationProvider#name_for)
       def name_for(dependency)
         with_no_such_dependency_error_handling do
diff --git a/lib/bundler/vendor/molinillo/lib/molinillo/errors.rb b/lib/bundler/vendor/molinillo/lib/molinillo/errors.rb
index 4d64d21072..14ac26b39e 100644
--- a/lib/bundler/vendor/molinillo/lib/molinillo/errors.rb
+++ b/lib/bundler/vendor/molinillo/lib/molinillo/errors.rb
@@ -121,7 +121,7 @@ module Bundler::Molinillo
           t = ''.dup
           depth = 2
           tree.each do |req|
-            t << '  ' * depth << req.to_s
+            t << '  ' * depth << printable_requirement.call(req)
             unless tree.last == req
               if spec = conflict.activated_by_name[name_for(req)]
                 t << %( was resolved to #{version_for_spec.call(spec)}, which)
diff --git a/lib/bundler/vendor/molinillo/lib/molinillo/modules/specification_provider.rb b/lib/bundler/vendor/molinillo/lib/molinillo/modules/specification_provider.rb
index fa094c1981..edf2366b7b 100644
--- a/lib/bundler/vendor/molinillo/lib/molinillo/modules/specification_provider.rb
+++ b/lib/bundler/vendor/molinillo/lib/molinillo/modules/specification_provider.rb
@@ -45,6 +45,17 @@ module Bundler::Molinillo
       true
     end
 
+    # Determines whether two arrays of dependencies are equal, and thus can be
+    # grouped.
+    #
+    # @param [Array<Object>] dependencies
+    # @param [Array<Object>] other_dependencies
+    # @return [Boolean] whether `dependencies` and `other_dependencies` should
+    #   be considered equal.
+    def dependencies_equal?(dependencies, other_dependencies)
+      dependencies == other_dependencies
+    end
+
     # Returns the name for the given `dependency`.
     # @note This method should be 'pure', i.e. the return value should depend
     #   only on the `dependency` parameter.
diff --git a/lib/bundler/vendor/molinillo/lib/molinillo/resolution.rb b/lib/bundler/vendor/molinillo/lib/molinillo/resolution.rb
index f48d333462..c689ca7635 100644
--- a/lib/bundler/vendor/molinillo/lib/molinillo/resolution.rb
+++ b/lib/bundler/vendor/molinillo/lib/molinillo/resolution.rb
@@ -807,7 +807,7 @@ module Bundler::Molinillo
 
         possibilities.reverse_each do |possibility|
           dependencies = dependencies_for(possibility)
-          if current_possibility_set && current_possibility_set.dependencies == dependencies
+          if current_possibility_set && dependencies_equal?(current_possibility_set.dependencies, dependencies)
             current_possibility_set.possibilities.unshift(possibility)
           else
             possibility_sets.unshift(PossibilitySet.new(dependencies, [possibility]))
diff --git a/lib/bundler/version.rb b/lib/bundler/version.rb
index b9fd12cda8..35007186b5 100644
--- a/lib/bundler/version.rb
+++ b/lib/bundler/version.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: false
 
 module Bundler
-  VERSION = "2.2.6".freeze
+  VERSION = "2.2.7".freeze
 
   def self.bundler_major_version
     @bundler_major_version ||= VERSION.split(".").first.to_i