Ruby 1.8.7 and Rails 2.1.2
Rails 2.1.x is available with Ruby 1.8.7.
so, in RedmineInstall
Notes: * Rails has some compatibility issues with ruby 1.8.7. *The supported ruby version is 1.8.6*.
should be as follows,
Notes: * Rails 2.0.x has some compatibility issues with ruby 1.8.7. Use ruby 1.8.6. * Rails 2.1.x is available with ruby 1.8.7.
Now distributions that includes ruby 1.8.7 are increasing.
so, This is more appropriate for users who are going to try Redmine.