1 files changed, 6 insertions, 11 deletions
diff --git a/lib/bundler/runtime.rb b/lib/bundler/runtime.rb
index 31e71388a6..ec772cfe7b 100644
--- a/lib/bundler/runtime.rb
+++ b/lib/bundler/runtime.rb
@@ -28,11 +28,11 @@ module Bundler
         spec.load_paths.reject {|path| $LOAD_PATH.include?(path) }
       end.reverse.flatten
 
-      Bundler.rubygems.add_to_load_path(load_paths)
+      Gem.add_to_load_path(*load_paths)
 
       setup_manpath
 
-      lock(:preserve_unknown_sections => true)
+      lock(preserve_unknown_sections: true)
 
       self
     end
@@ -94,8 +94,8 @@ module Bundler
     definition_method :requires
 
     def lock(opts = {})
-      return if @definition.nothing_changed? && !@definition.unlocking?
-      @definition.lock(Bundler.default_lockfile, opts[:preserve_unknown_sections])
+      return if @definition.no_resolve_needed?
+      @definition.lock(opts[:preserve_unknown_sections])
     end
 
     alias_method :gems, :specs
@@ -125,7 +125,6 @@ module Bundler
       specs_to_cache.each do |spec|
         next if spec.name == "bundler"
         next if spec.source.is_a?(Source::Gemspec)
-        spec.source.send(:fetch_gem, spec) if Bundler.settings[:cache_all_platforms] && spec.source.respond_to?(:fetch_gem, true)
         spec.source.cache(spec, custom_path) if spec.source.respond_to?(:cache)
       end
 
@@ -265,7 +264,7 @@ module Bundler
 
       return if manuals.empty?
       Bundler::SharedHelpers.set_env "MANPATH", manuals.concat(
-        ENV["MANPATH"].to_s.split(File::PATH_SEPARATOR)
+        ENV["MANPATH"] ? ENV["MANPATH"].to_s.split(File::PATH_SEPARATOR) : [""]
       ).uniq.join(File::PATH_SEPARATOR)
     end
 
@@ -301,11 +300,7 @@ module Bundler
       e = Gem::LoadError.new "You have already activated #{activated_spec.name} #{activated_spec.version}, " \
                              "but your Gemfile requires #{spec.name} #{spec.version}. #{suggestion}"
       e.name = spec.name
-      if e.respond_to?(:requirement=)
-        e.requirement = Gem::Requirement.new(spec.version.to_s)
-      else
-        e.version_requirement = Gem::Requirement.new(spec.version.to_s)
-      end
+      e.requirement = Gem::Requirement.new(spec.version.to_s)
       raise e
     end
   end