https://git.ruby-lang.org/ruby.git/commit/?id=633608ebd4

From 633608ebd4cbdeea562dc4c608495134965a19a9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Rodr=C3=ADguez?= <deivid.rodriguez@r...>
Date: Tue, 24 May 2022 12:18:38 +0200
Subject: [rubygems/rubygems] Fix crash when printing resolution conflicts on
 metadata requirements

https://github.com/rubygems/rubygems/commit/b69e1e9374
---
 lib/bundler/resolver.rb                     | 13 ++++++-------
 spec/bundler/install/gems/resolving_spec.rb | 21 +++++++++++++++++++++
 2 files changed, 27 insertions(+), 7 deletions(-)

diff --git a/lib/bundler/resolver.rb b/lib/bundler/resolver.rb
index 2285114c57..8ec6d5dbc0 100644
--- a/lib/bundler/resolver.rb
+++ b/lib/bundler/resolver.rb
@@ -19,13 +19,15 @@ module Bundler https://github.com/ruby/ruby/blob/trunk/lib/bundler/resolver.rb#L19
     #   collection of gemspecs is returned. Otherwise, nil is returned.
     def self.resolve(requirements, source_requirements = {}, base = [], gem_version_promoter = GemVersionPromoter.new, additional_base_requirements = [], platforms = nil)
       base = SpecSet.new(base) unless base.is_a?(SpecSet)
-      resolver = new(source_requirements, base, gem_version_promoter, additional_base_requirements, platforms)
+      metadata_requirements, regular_requirements = requirements.partition {|dep| dep.name.end_with?("\0") }
+      resolver = new(source_requirements, base, gem_version_promoter, additional_base_requirements, platforms, metadata_requirements)
       result = resolver.start(requirements)
-      SpecSet.new(SpecSet.new(result).for(requirements.reject {|dep| dep.name.end_with?("\0") }))
+      SpecSet.new(SpecSet.new(result).for(regular_requirements))
     end
 
-    def initialize(source_requirements, base, gem_version_promoter, additional_base_requirements, platforms)
+    def initialize(source_requirements, base, gem_version_promoter, additional_base_requirements, platforms, metadata_requirements)
       @source_requirements = source_requirements
+      @metadata_requirements = metadata_requirements
       @base = base
       @resolver = Molinillo::Resolver.new(self, self)
       @search_for = {}
@@ -344,8 +346,6 @@ module Bundler https://github.com/ruby/ruby/blob/trunk/lib/bundler/resolver.rb#L346
             trees.sort_by! {|t| t.reverse.map(&:name) }
           end
 
-          metadata_requirements = {}
-
           o << trees.map do |tree|
             t = "".dup
             depth = 2
@@ -354,7 +354,6 @@ module Bundler https://github.com/ruby/ruby/blob/trunk/lib/bundler/resolver.rb#L354
             base_tree_name = base_tree.name
 
             if base_tree_name.end_with?("\0")
-              metadata_requirements[base_tree_name] = base_tree
               t = nil
             else
               tree.each do |req|
@@ -393,7 +392,7 @@ module Bundler https://github.com/ruby/ruby/blob/trunk/lib/bundler/resolver.rb#L392
               end
             end
           elsif name.end_with?("\0")
-            o << %(\n  Current #{name} version:\n    #{SharedHelpers.pretty_dependency(metadata_requirements[name])}\n\n)
+            o << %(\n  Current #{name} version:\n    #{SharedHelpers.pretty_dependency(@metadata_requirements.find {|req| req.name == name })}\n\n)
           elsif conflict.locked_requirement
             o << "\n"
             o << %(Running `bundle update` will rebuild your snapshot from scratch, using only\n)
diff --git a/spec/bundler/install/gems/resolving_spec.rb b/spec/bundler/install/gems/resolving_spec.rb
index 469ecd412f..f23d137bc1 100644
--- a/spec/bundler/install/gems/resolving_spec.rb
+++ b/spec/bundler/install/gems/resolving_spec.rb
@@ -282,6 +282,27 @@ RSpec.describe "bundle install with install-time dependencies" do https://github.com/ruby/ruby/blob/trunk/spec/bundler/install/gems/resolving_spec.rb#L282
         expect(err).not_to include("That means the author of parallel_tests (3.8.0) has removed it.")
       end
 
+      it "gives a meaningful error on ruby version mismatches between dependencies" do
+        build_repo4 do
+          build_gem "requires-old-ruby" do |s|
+            s.required_ruby_version = "< #{RUBY_VERSION}"
+          end
+        end
+
+        build_lib("foo", :path => bundled_app) do |s|
+          s.required_ruby_version = ">= #{RUBY_VERSION}"
+
+          s.add_dependency "requires-old-ruby"
+        end
+
+        install_gemfile <<-G, :raise_on_error => false
+          source "#{file_uri_for(gem_repo4)}"
+          gemspec
+        G
+
+        expect(err).to include("Bundler found conflicting requirements for the Ruby\0 version:")
+      end
+
       it "installs the older version under rate limiting conditions" do
         build_repo4 do
           build_gem "rack", "9001.0.0" do |s|
-- 
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