[Definition] Allow unlocking when removing the ruby version requirement

2 files changed, 19 insertions, 0 deletions

diff --git a/lib/bundler/definition.rb b/lib/bundler/definition.rb
index 413eedc168..c09383cb04 100644
--- a/lib/bundler/definition.rb
+++ b/lib/bundler/definition.rb
@@ -85,6 +85,7 @@ module Bundler
 
       @unlock[:gems] ||= []
       @unlock[:sources] ||= []
+      @unlocking ||= @unlock[:ruby] || (!@locked_ruby_version ^ !@ruby_version)
 
       current_platform = Bundler.rubygems.platforms.map {|p| generic(p) }.compact.last
       add_platform(current_platform)
diff --git a/spec/install/gemfile/ruby_spec.rb b/spec/install/gemfile/ruby_spec.rb
index d3536289eb..d8e188ce48 100644
--- a/spec/install/gemfile/ruby_spec.rb
+++ b/spec/install/gemfile/ruby_spec.rb
@@ -22,4 +22,22 @@ describe "ruby requirement" do
     expect(exitstatus).to eq(0) if exitstatus
     should_be_installed "rack-obama 1.0"
   end
+
+  it "allows removing the ruby version requirement" do
+    install_gemfile <<-G
+      source "file://#{gem_repo1}"
+      ruby "~> #{RUBY_VERSION}"
+      gem "rack"
+    G
+
+    expect(lockfile).to include("RUBY VERSION")
+
+    install_gemfile <<-G
+      source "file://#{gem_repo1}"
+      gem "rack"
+    G
+
+    should_be_installed "rack 1.0.0"
+    expect(lockfile).not_to include("RUBY VERSION")
+  end
 end