[rubygems/rubygems] Fix materialization of locked 0 prereleases

Since the default requirement in rubygems is ">= 0", it was failing to
match 0 prereleases. Changing the default globally to be ">= 0.a"
instead is a major refactoring that's quite tricky to make backwards
compatible, so I'm special casing this where needed for now to fix the
regression.

68fe37937c

lib/bundler/lazy_specification.rb

@@ -39,7 +39,9 @@ module Bundler
     end
 
     def satisfies?(dependency)
-      @name == dependency.name && dependency.requirement.satisfied_by?(Gem::Version.new(@version))
+      effective_requirement = dependency.requirement == Gem::Requirement.default ? Gem::Requirement.default_prerelease : dependency.requirement
+
+      @name == dependency.name && effective_requirement.satisfied_by?(Gem::Version.new(@version))
     end
 
     def to_lock

spec/bundler/install/gemfile/path_spec.rb

@@ -183,6 +183,39 @@ RSpec.describe "bundle install with explicit source paths" do
     expect(the_bundle).to include_gems "foo 1.0"
   end
 
+  it "works when using prereleases of 0.0.0" do
+    build_lib "foo", "0.0.0.dev", :path => lib_path("foo")
+
+    gemfile <<~G
+      source "#{file_uri_for(gem_repo1)}"
+      gem "foo", :path => "#{lib_path("foo")}"
+    G
+
+    lockfile <<~L
+      PATH
+        remote: #{lib_path("foo")}
+        specs:
+          foo (0.0.0.dev)
+
+      GEM
+        remote: #{file_uri_for(gem_repo1)}/
+        specs:
+
+      PLATFORMS
+        #{lockfile_platforms}
+
+      DEPENDENCIES
+        foo!
+
+      BUNDLED WITH
+        #{Bundler::VERSION}
+    L
+
+    bundle :install
+
+    expect(the_bundle).to include_gems "foo 0.0.0.dev"
+  end
+
   it "handles downgrades" do
     build_lib "omg", "2.0", :path => lib_path("omg")