8 files changed, 332 insertions, 24 deletions

diff --git a/spec/bundler/commands/lock_spec.rb b/spec/bundler/commands/lock_spec.rb
index ed0c3dfadf..c80b9dc646 100644
--- a/spec/bundler/commands/lock_spec.rb
+++ b/spec/bundler/commands/lock_spec.rb
@@ -752,5 +752,94 @@ RSpec.describe "bundle lock" do
           version solving has failed.
       ERR
     end
+
+    it "is able to display some explanation on crazy irresolvable cases" do
+      build_repo4 do
+        build_gem "activeadmin", "2.13.1" do |s|
+          s.add_dependency "ransack", "= 3.1.0"
+        end
+
+        # Activemodel is missing as a dependency in lockfile
+        build_gem "ransack", "3.1.0" do |s|
+          s.add_dependency "activemodel", ">= 6.0.4"
+          s.add_dependency "activesupport", ">= 6.0.4"
+        end
+
+        %w[6.0.4 7.0.2.3 7.0.3.1 7.0.4].each do |version|
+          build_gem "activesupport", version
+
+          # Activemodel is only available on 6.0.4
+          if version == "6.0.4"
+            build_gem "activemodel", version do |s|
+              s.add_dependency "activesupport", version
+            end
+          end
+
+          build_gem "rails", version do |s|
+            # Depednencies of Rails 7.0.2.3 are in reverse order
+            if version == "7.0.2.3"
+              s.add_dependency "activesupport", version
+              s.add_dependency "activemodel", version
+            else
+              s.add_dependency "activemodel", version
+              s.add_dependency "activesupport", version
+            end
+          end
+        end
+      end
+
+      gemfile <<~G
+        source "#{file_uri_for(gem_repo4)}"
+
+        gem "rails", ">= 7.0.2.3"
+        gem "activeadmin", "= 2.13.1"
+      G
+
+      lockfile <<~L
+        GEM
+          remote: #{file_uri_for(gem_repo4)}/
+          specs:
+            activeadmin (2.13.1)
+              ransack (= 3.1.0)
+            ransack (3.1.0)
+              activemodel (>= 6.0.4)
+
+        PLATFORMS
+          #{lockfile_platforms}
+
+        DEPENDENCIES
+          activeadmin (= 2.13.1)
+          ransack (= 3.1.0)
+
+        BUNDLED WITH
+           #{Bundler::VERSION}
+      L
+
+      bundle "lock", :raise_on_error => false
+
+      expect(err).to eq <<~ERR.strip
+        Could not find compatible versions
+
+            Because every version of activemodel depends on activesupport = 6.0.4
+              and rails >= 7.0.2.3, < 7.0.3.1 depends on activesupport = 7.0.2.3,
+              every version of activemodel is incompatible with rails >= 7.0.2.3, < 7.0.3.1.
+            And because rails >= 7.0.2.3, < 7.0.3.1 depends on activemodel = 7.0.2.3,
+              rails >= 7.0.2.3, < 7.0.3.1 is forbidden.
+        (1) So, because rails >= 7.0.3.1, < 7.0.4 depends on activemodel = 7.0.3.1
+              and rails >= 7.0.4 depends on activemodel = 7.0.4,
+              rails >= 7.0.2.3 requires activemodel = 7.0.3.1 OR = 7.0.4.
+
+            Because rails >= 7.0.2.3, < 7.0.3.1 depends on activemodel = 7.0.2.3
+              and rails >= 7.0.3.1, < 7.0.4 depends on activesupport = 7.0.3.1,
+              rails >= 7.0.2.3, < 7.0.4 requires activemodel = 7.0.2.3 or activesupport = 7.0.3.1.
+            And because rails >= 7.0.4 depends on activesupport = 7.0.4
+              and every version of activemodel depends on activesupport = 6.0.4,
+              activemodel != 7.0.2.3 is incompatible with rails >= 7.0.2.3.
+            And because rails >= 7.0.2.3 requires activemodel = 7.0.3.1 OR = 7.0.4 (1),
+              rails >= 7.0.2.3 is forbidden.
+            So, because Gemfile depends on rails >= 7.0.2.3,
+              version solving has failed.
+      ERR
+    end
   end
 end
diff --git a/spec/bundler/commands/newgem_spec.rb b/spec/bundler/commands/newgem_spec.rb
index 15a75577a1..5827f7380c 100644
--- a/spec/bundler/commands/newgem_spec.rb
+++ b/spec/bundler/commands/newgem_spec.rb
@@ -310,28 +310,28 @@ RSpec.describe "bundle gem" do
     expect(last_command).to be_success
   end
 
-  it "has no rubocop offenses when using --ext and --linter=rubocop flag", :readline do
+  it "has no rubocop offenses when using --ext=c and --linter=rubocop flag", :readline do
     skip "ruby_core has an 'ast.rb' file that gets in the middle and breaks this spec" if ruby_core?
     bundle "gem #{gem_name} --ext=c --linter=rubocop"
     bundle_exec_rubocop
     expect(last_command).to be_success
   end
 
-  it "has no rubocop offenses when using --ext, --test=minitest, and --linter=rubocop flag", :readline do
+  it "has no rubocop offenses when using --ext=c, --test=minitest, and --linter=rubocop flag", :readline do
     skip "ruby_core has an 'ast.rb' file that gets in the middle and breaks this spec" if ruby_core?
     bundle "gem #{gem_name} --ext=c --test=minitest --linter=rubocop"
     bundle_exec_rubocop
     expect(last_command).to be_success
   end
 
-  it "has no rubocop offenses when using --ext, --test=rspec, and --linter=rubocop flag", :readline do
+  it "has no rubocop offenses when using --ext=c, --test=rspec, and --linter=rubocop flag", :readline do
     skip "ruby_core has an 'ast.rb' file that gets in the middle and breaks this spec" if ruby_core?
     bundle "gem #{gem_name} --ext=c --test=rspec --linter=rubocop"
     bundle_exec_rubocop
     expect(last_command).to be_success
   end
 
-  it "has no rubocop offenses when using --ext, --ext=test-unit, and --linter=rubocop flag", :readline do
+  it "has no rubocop offenses when using --ext=c, --test=test-unit, and --linter=rubocop flag", :readline do
     skip "ruby_core has an 'ast.rb' file that gets in the middle and breaks this spec" if ruby_core?
     bundle "gem #{gem_name} --ext=c --test=test-unit --linter=rubocop"
     bundle_exec_rubocop
@@ -345,6 +345,42 @@ RSpec.describe "bundle gem" do
     expect(last_command).to be_success
   end
 
+  it "has no rubocop offenses when using --ext=rust and --linter=rubocop flag", :readline do
+    skip "ruby_core has an 'ast.rb' file that gets in the middle and breaks this spec" if ruby_core?
+    skip "RubyGems incompatible with Rust builder" if ::Gem::Version.new("3.3.11") > ::Gem.rubygems_version
+
+    bundle "gem #{gem_name} --ext=rust --linter=rubocop"
+    bundle_exec_rubocop
+    expect(last_command).to be_success
+  end
+
+  it "has no rubocop offenses when using --ext=rust, --test=minitest, and --linter=rubocop flag", :readline do
+    skip "ruby_core has an 'ast.rb' file that gets in the middle and breaks this spec" if ruby_core?
+    skip "RubyGems incompatible with Rust builder" if ::Gem::Version.new("3.3.11") > ::Gem.rubygems_version
+
+    bundle "gem #{gem_name} --ext=rust --test=minitest --linter=rubocop"
+    bundle_exec_rubocop
+    expect(last_command).to be_success
+  end
+
+  it "has no rubocop offenses when using --ext=rust, --test=rspec, and --linter=rubocop flag", :readline do
+    skip "ruby_core has an 'ast.rb' file that gets in the middle and breaks this spec" if ruby_core?
+    skip "RubyGems incompatible with Rust builder" if ::Gem::Version.new("3.3.11") > ::Gem.rubygems_version
+
+    bundle "gem #{gem_name} --ext=rust --test=rspec --linter=rubocop"
+    bundle_exec_rubocop
+    expect(last_command).to be_success
+  end
+
+  it "has no rubocop offenses when using --ext=rust, --test=test-unit, and --linter=rubocop flag", :readline do
+    skip "ruby_core has an 'ast.rb' file that gets in the middle and breaks this spec" if ruby_core?
+    skip "RubyGems incompatible with Rust builder" if ::Gem::Version.new("3.3.11") > ::Gem.rubygems_version
+
+    bundle "gem #{gem_name} --ext=rust --test=test-unit --linter=rubocop"
+    bundle_exec_rubocop
+    expect(last_command).to be_success
+  end
+
   shared_examples_for "CI config is absent" do
     it "does not create any CI files" do
       expect(bundled_app("#{gem_name}/.github/workflows/main.yml")).to_not exist
@@ -1336,12 +1372,15 @@ RSpec.describe "bundle gem" do
       context "is deprecated", :bundler => "< 3" do
         it "prints deprecation when used after gem name" do
           bundle ["gem", "--ext", gem_name].compact.join(" ")
-          expect(err).to include "[DEPRECATED] Option `--ext` without explicit value is deprecated."
+          expect(err).to include "[DEPRECATED]"
+          expect(err).to include "`--ext` with no arguments has been deprecated"
           expect(bundled_app("#{gem_name}/ext/#{gem_name}/#{gem_name}.c")).to exist
         end
 
         it "prints deprecation when used before gem name" do
           bundle ["gem", gem_name, "--ext"].compact.join(" ")
+          expect(err).to include "[DEPRECATED]"
+          expect(err).to include "`--ext` with no arguments has been deprecated"
           expect(bundled_app("#{gem_name}/ext/#{gem_name}/#{gem_name}.c")).to exist
         end
       end
@@ -1364,8 +1403,11 @@ RSpec.describe "bundle gem" do
         expect(bundled_app("#{gem_name}/ext/#{gem_name}/#{gem_name}.c")).to exist
       end
 
-      it "includes rake-compiler" do
+      it "includes rake-compiler, but no Rust related changes" do
         expect(bundled_app("#{gem_name}/Gemfile").read).to include('gem "rake-compiler"')
+
+        expect(bundled_app("#{gem_name}/Gemfile").read).to_not include('gem "rb_sys"')
+        expect(bundled_app("#{gem_name}/#{gem_name}.gemspec").read).to_not include('spec.required_rubygems_version = ">= ')
       end
 
       it "depends on compile task for build" do
@@ -1387,6 +1429,64 @@ RSpec.describe "bundle gem" do
         expect(bundled_app("#{gem_name}/Rakefile").read).to eq(rakefile)
       end
     end
+
+    context "--ext parameter set with rust and old RubyGems" do
+      it "fails in friendly way" do
+        if ::Gem::Version.new("3.3.11") <= ::Gem.rubygems_version
+          skip "RubyGems compatible with Rust builder"
+        end
+
+        expect do
+          bundle ["gem", gem_name, "--ext=rust"].compact.join(" ")
+        end.to raise_error(RuntimeError, /too old to build Rust extension/)
+      end
+    end
+
+    context "--ext parameter set with rust" do
+      let(:flags) { "--ext=rust" }
+
+      before do
+        skip "RubyGems incompatible with Rust builder" if ::Gem::Version.new("3.3.11") > ::Gem.rubygems_version
+
+        bundle ["gem", gem_name, flags].compact.join(" ")
+      end
+
+      it "is not deprecated" do
+        expect(err).not_to include "[DEPRECATED] Option `--ext` without explicit value is deprecated."
+      end
+
+      it "builds ext skeleton" do
+        expect(bundled_app("#{gem_name}/Cargo.toml")).to exist
+        expect(bundled_app("#{gem_name}/ext/#{gem_name}/Cargo.toml")).to exist
+        expect(bundled_app("#{gem_name}/ext/#{gem_name}/extconf.rb")).to exist
+        expect(bundled_app("#{gem_name}/ext/#{gem_name}/src/lib.rs")).to exist
+      end
+
+      it "includes rake-compiler, rb_sys gems and required_rubygems_version constraint" do
+        expect(bundled_app("#{gem_name}/Gemfile").read).to include('gem "rake-compiler"')
+        expect(bundled_app("#{gem_name}/Gemfile").read).to include('gem "rb_sys"')
+        expect(bundled_app("#{gem_name}/#{gem_name}.gemspec").read).to include('spec.required_rubygems_version = ">= ')
+      end
+
+      it "depends on compile task for build" do
+        rakefile = strip_whitespace <<-RAKEFILE
+          # frozen_string_literal: true
+
+          require "bundler/gem_tasks"
+          require "rake/extensiontask"
+
+          task build: :compile
+
+          Rake::ExtensionTask.new("#{gem_name}") do |ext|
+            ext.lib_dir = "lib/#{gem_name}"
+          end
+
+          task default: :compile
+        RAKEFILE
+
+        expect(bundled_app("#{gem_name}/Rakefile").read).to eq(rakefile)
+      end
+    end
   end
 
   context "gem naming with dashed", :readline do
diff --git a/spec/bundler/commands/update_spec.rb b/spec/bundler/commands/update_spec.rb
index 583e2aa41b..8c7b9c13c8 100644
--- a/spec/bundler/commands/update_spec.rb
+++ b/spec/bundler/commands/update_spec.rb
@@ -1310,21 +1310,19 @@ RSpec.describe "bundle update --bundler" do
   end
 
   it "updates the bundler version in the lockfile even if the latest version is not installed", :ruby_repo, :realworld do
-    skip "ruby-head has a default Bundler version too high for this spec to work" if RUBY_PATCHLEVEL == -1
-
     pristine_system_gems "bundler-2.3.9"
 
     build_repo4 do
       build_gem "rack", "1.0"
     end
 
-    install_gemfile <<-G
+    install_gemfile <<-G, :env => { "BUNDLER_IGNORE_DEFAULT_GEM" => "true" }
       source "#{file_uri_for(gem_repo4)}"
       gem "rack"
     G
     lockfile lockfile.sub(/(^\s*)#{Bundler::VERSION}($)/, "2.3.9")
 
-    bundle :update, :bundler => true, :artifice => "vcr", :verbose => true
+    bundle :update, :bundler => true, :artifice => "vcr", :verbose => true, :env => { "BUNDLER_IGNORE_DEFAULT_GEM" => "true" }
 
     # Only updates properly on modern RubyGems.
 
@@ -1356,15 +1354,13 @@ RSpec.describe "bundle update --bundler" do
   end
 
   it "errors if the explicit target version does not exist", :realworld do
-    skip "ruby-head has a default Bundler version too high for this spec to work" if RUBY_PATCHLEVEL == -1
-
     pristine_system_gems "bundler-2.3.9"
 
     build_repo4 do
       build_gem "rack", "1.0"
     end
 
-    install_gemfile <<-G
+    install_gemfile <<-G, :env => { "BUNDLER_IGNORE_DEFAULT_GEM" => "true" }
       source "#{file_uri_for(gem_repo4)}"
       gem "rack"
     G
diff --git a/spec/bundler/install/gemfile/git_spec.rb b/spec/bundler/install/gemfile/git_spec.rb
index 7d263a2fe5..6a9532332c 100644
--- a/spec/bundler/install/gemfile/git_spec.rb
+++ b/spec/bundler/install/gemfile/git_spec.rb
@@ -235,6 +235,29 @@ RSpec.describe "bundle install with git sources" do
       G
     end
 
+    it "works when a tag that does not look like a commit hash is used as the value of :ref" do
+      build_git "foo"
+      @remote = build_git("bar", :bare => true)
+      update_git "foo", :remote => file_uri_for(@remote.path)
+      update_git "foo", :push => "main"
+
+      install_gemfile <<-G
+        source "#{file_uri_for(gem_repo1)}"
+        gem 'foo', :git => "#{@remote.path}"
+      G
+
+      # Create a new tag on the remote that needs fetching
+      update_git "foo", :tag => "v1.0.0"
+      update_git "foo", :push => "v1.0.0"
+
+      install_gemfile <<-G
+        source "#{file_uri_for(gem_repo1)}"
+        gem 'foo', :git => "#{@remote.path}", :ref => "v1.0.0"
+      G
+
+      expect(err).to be_empty
+    end
+
     it "works when the revision is a non-head ref" do
       # want to ensure we don't fallback to main
       update_git "foo", :path => lib_path("foo-1.0") do |s|
diff --git a/spec/bundler/install/gemfile/path_spec.rb b/spec/bundler/install/gemfile/path_spec.rb
index 515901064f..9ef1c879f8 100644
--- a/spec/bundler/install/gemfile/path_spec.rb
+++ b/spec/bundler/install/gemfile/path_spec.rb
@@ -92,14 +92,12 @@ RSpec.describe "bundle install with explicit source paths" do
     build_lib "demo", :path => lib_path("demo")
     build_lib "aaa", :path => lib_path("demo/aaa")
 
-    gemfile = <<-G
+    gemfile lib_path("demo/Gemfile"), <<-G
       source "#{file_uri_for(gem_repo1)}"
       gemspec
       gem "aaa", :path => "./aaa"
     G
 
-    File.open(lib_path("demo/Gemfile"), "w") {|f| f.puts gemfile }
-
     lockfile = <<~L
       PATH
         remote: .
@@ -314,18 +312,67 @@ RSpec.describe "bundle install with explicit source paths" do
       s.add_dependency "rack", "1.0"
     end
 
-    gemfile = <<-G
+    gemfile lib_path("foo/Gemfile"), <<-G
       source "#{file_uri_for(gem_repo1)}"
       gemspec
     G
 
-    File.open(lib_path("foo/Gemfile"), "w") {|f| f.puts gemfile }
-
     bundle "install", :dir => lib_path("foo")
     expect(the_bundle).to include_gems "foo 1.0", :dir => lib_path("foo")
     expect(the_bundle).to include_gems "rack 1.0", :dir => lib_path("foo")
   end
 
+  it "does not unlock dependencies of path sources" do
+    build_repo4 do
+      build_gem "graphql", "2.0.15"
+      build_gem "graphql", "2.0.16"
+    end
+
+    build_lib "foo", "0.1.0", :path => lib_path("foo") do |s|
+      s.add_dependency "graphql", "~> 2.0"
+    end
+
+    gemfile_path = lib_path("foo/Gemfile")
+
+    gemfile gemfile_path, <<-G
+      source "#{file_uri_for(gem_repo4)}"
+      gemspec
+    G
+
+    lockfile_path = lib_path("foo/Gemfile.lock")
+
+    original_lockfile = <<~L
+      PATH
+        remote: .
+        specs:
+          foo (0.1.0)
+            graphql (~> 2.0)
+
+      GEM
+        remote: #{file_uri_for(gem_repo4)}/
+        specs:
+          graphql (2.0.15)
+
+      PLATFORMS
+        #{lockfile_platforms}
+
+      DEPENDENCIES
+        foo!
+
+      BUNDLED WITH
+         #{Bundler::VERSION}
+    L
+
+    lockfile lockfile_path, original_lockfile
+
+    build_lib "foo", "0.1.1", :path => lib_path("foo") do |s|
+      s.add_dependency "graphql", "~> 2.0"
+    end
+
+    bundle "install", :dir => lib_path("foo")
+    expect(lockfile_path).to read_as(original_lockfile.gsub("foo (0.1.0)", "foo (0.1.1)"))
+  end
+
   it "supports gemspec syntax with an alternative path" do
     build_lib "foo", "1.0", :path => lib_path("foo") do |s|
       s.add_dependency "rack", "1.0"
@@ -791,13 +838,11 @@ RSpec.describe "bundle install with explicit source paths" do
   describe "when there are both a gemspec and remote gems" do
     it "doesn't query rubygems for local gemspec name" do
       build_lib "private_lib", "2.2", :path => lib_path("private_lib")
-      gemfile = <<-G
+      gemfile lib_path("private_lib/Gemfile"), <<-G
         source "http://localgemserver.test"
         gemspec
         gem 'rack'
       G
-      File.open(lib_path("private_lib/Gemfile"), "w") {|f| f.puts gemfile }
-
       bundle :install, :env => { "DEBUG" => "1" }, :artifice => "endpoint", :dir => lib_path("private_lib")
       expect(out).to match(%r{^HTTP GET http://localgemserver\.test/api/v1/dependencies\?gems=rack$})
       expect(out).not_to match(/^HTTP GET.*private_lib/)
diff --git a/spec/bundler/lock/git_spec.rb b/spec/bundler/lock/git_spec.rb
index df9d71fdd6..dfcbb645b1 100644
--- a/spec/bundler/lock/git_spec.rb
+++ b/spec/bundler/lock/git_spec.rb
@@ -52,6 +52,44 @@ RSpec.describe "bundle lock with git gems" do
     expect(err).to be_empty
   end
 
+  it "properly fetches a git source locked to an unreachable ref" do
+    # Create a commit and make it unreachable
+    git "checkout -b foo ", lib_path("foo-1.0")
+    unreachable_sha = update_git("foo").ref_for("HEAD")
+    git "checkout main ", lib_path("foo-1.0")
+    git "branch -D foo ", lib_path("foo-1.0")
+
+    gemfile <<-G
+      source "#{file_uri_for(gem_repo1)}"
+      gem 'foo', :git => "#{lib_path("foo-1.0")}"
+    G
+
+    lockfile <<-L
+      GIT
+        remote: #{lib_path("foo-1.0")}
+        revision: #{unreachable_sha}
+        specs:
+          foo (1.0)
+
+      GEM
+        remote: #{file_uri_for(gem_repo1)}/
+        specs:
+
+      PLATFORMS
+        #{lockfile_platforms}
+
+      DEPENDENCIES
+        foo!
+
+      BUNDLED WITH
+         #{Bundler::VERSION}
+    L
+
+    bundle "install"
+
+    expect(err).to be_empty
+  end
+
   it "provides correct #full_gem_path" do
     run <<-RUBY
       puts Bundler.rubygems.find_name('foo').first.full_gem_path
diff --git a/spec/bundler/support/hax.rb b/spec/bundler/support/hax.rb
index ad7a6e0de9..c7fe3637cc 100644
--- a/spec/bundler/support/hax.rb
+++ b/spec/bundler/support/hax.rb
@@ -24,13 +24,30 @@ module Gem
   end
 
   if ENV["BUNDLER_SPEC_PLATFORM"]
+    previous_platforms = @platforms
+    previous_local = Platform.local
+
     class Platform
       @local = new(ENV["BUNDLER_SPEC_PLATFORM"])
     end
-    @platforms = [Gem::Platform::RUBY, Gem::Platform.local]
+    @platforms = previous_platforms.map {|platform| platform == previous_local ? Platform.local : platform }
   end
 
   if ENV["BUNDLER_SPEC_GEM_SOURCES"]
     self.sources = [ENV["BUNDLER_SPEC_GEM_SOURCES"]]
   end
+
+  if ENV["BUNDLER_IGNORE_DEFAULT_GEM"]
+    module RemoveDefaultBundlerStub
+      def default_stubs(pattern = "*")
+        super.delete_if {|stub| stub.name == "bundler" }
+      end
+    end
+
+    class Specification
+      class << self
+        prepend RemoveDefaultBundlerStub
+      end
+    end
+  end
 end
diff --git a/spec/bundler/support/matchers.rb b/spec/bundler/support/matchers.rb
index 8b22e7dbc3..ea7c784683 100644
--- a/spec/bundler/support/matchers.rb
+++ b/spec/bundler/support/matchers.rb
@@ -162,7 +162,7 @@ module Spec
           end
           if exitstatus == 65
             actual_platform = out.split("\n").last
-            next "#{name} was expected to be of platform #{platform} but was #{actual_platform}"
+            next "#{name} was expected to be of platform #{platform || "ruby"} but was #{actual_platform || "ruby"}"
           end
           if exitstatus == 66
             actual_source = out.split("\n").last