Ruby 3.0.2 bundle install tries to install rubysl

[dblock]

Subject of the issue

Ruby 3.0.2 bundle install complains on rubysl.

Works with Ruby 2.6.5.

$ bundle
Fetching gem metadata from https://rubygems.org/.........
Resolving dependencies...
Bundler found conflicting requirements for the Ruby version:
  In Gemfile:
    Ruby

    rspec-expectations was resolved to 3.10.0.pre, which depends on
      Ruby (>= 1.8.7)

    rubysl was resolved to 1.1.0, which depends on
      rubysl-irb (~> 1.0) was resolved to 1.0.2, which depends on
        Ruby (~> 1.8.7)

This gets evaluated somehow:

platforms :rbx do
  gem 'rubysl'
end

Your environment

• Ruby version: 3.0.2
• rspec-expectations version: HEAD

Steps to reproduce

export USE_GIT_REPOS=1
rvm use 3.0.2
bundle

Expected behavior

Bundle install should succeed.

Actual behavior

See error above.

[JonRowe]

I'm not sure thats up with your local bundler, try ensuring its on the latest version, that platform should only be run on rubinius.

[dblock]

Btw, it looks similar to rubygems/bundler#2774.