Error when resolving dependencies

[rafaelfranca]

This is a simple script that reproduces the issue.

# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"

  # Activate the gem you are reporting the issue against.
  gem "activesupport", "5.2.0.rc1"
  gem "rspec-rails", "~> 3.7.2"
end

When you execute it you will get:

Bundler could not find compatible versions for gem "actionpack": (Bundler::VersionConflict)
  In Gemfile:
    rspec-rails (~> 3.7.2) was resolved to 3.7.2, which depends on
      actionpack (>= 3.0)

Could not find gem 'actionpack (>= 3.0)', which is required by gem 'rspec-rails (~> 3.7.2)', in any of the sources.

Bundler could not find compatible versions for gem "activesupport":
  In Gemfile:
    activesupport (= 5.2.0.rc1)

    rspec-rails (~> 3.7.2) was resolved to 3.7.2, which depends on
      actionpack (>= 3.0) was resolved to 3.0.0, which depends on
        activesupport (= 3.0.0)

It may be related with pre releases since if I change "5.2.0.rc1" with "5.1.0" it works.

Rubygem vesion: 2.7.6
Bundler version: 1.16.1
Ruby version: 2.5.0

[segiddins]

Reproduced, thanks!

as a work-around, specifying gem "rails", "5.2.0.rc1" manually gets this to resolve