1 files changed, 57 insertions, 0 deletions
diff --git a/lib/rubygems/resolver/git_specification.rb b/lib/rubygems/resolver/git_specification.rb
new file mode 100644
index 0000000000..e587c17d2a
--- /dev/null
+++ b/lib/rubygems/resolver/git_specification.rb
@@ -0,0 +1,57 @@
+# frozen_string_literal: true
+
+##
+# A GitSpecification represents a gem that is sourced from a git repository
+# and is being loaded through a gem dependencies file through the +git:+
+# option.
+
+class Gem::Resolver::GitSpecification < Gem::Resolver::SpecSpecification
+  def ==(other) # :nodoc:
+    self.class === other &&
+      @set  == other.set &&
+      @spec == other.spec &&
+      @source == other.source
+  end
+
+  def add_dependency(dependency) # :nodoc:
+    spec.dependencies << dependency
+  end
+
+  ##
+  # Installing a git gem only involves building the extensions and generating
+  # the executables.
+
+  def install(options = {})
+    require_relative "../installer"
+
+    installer = Gem::Installer.for_spec spec, options
+
+    yield installer if block_given?
+
+    installer.run_pre_install_hooks
+    installer.build_extensions
+    installer.run_post_build_hooks
+    installer.generate_bin
+    installer.run_post_install_hooks
+  end
+
+  def pretty_print(q) # :nodoc:
+    q.group 2, "[GitSpecification", "]" do
+      q.breakable
+      q.text "name: #{name}"
+
+      q.breakable
+      q.text "version: #{version}"
+
+      q.breakable
+      q.text "dependencies:"
+      q.breakable
+      q.pp dependencies
+
+      q.breakable
+      q.text "source:"
+      q.breakable
+      q.pp @source
+    end
+  end
+end