Drop support to Ruby < 2.7 and Rails < 6.0

Author: rafaelfranca

.github/workflows/ci.yml

@@ -8,13 +8,6 @@ jobs:
       matrix:
         ruby: [ '2.7', '3.0.2', 'head' ]
         rails: [ '6.0', '6.1', 'edge' ]
-        include:
-          - ruby: '2.6'
-            rails: '5.2'
-          - ruby: '2.6'
-            rails: '6.0'
-          - ruby: '2.6'
-            rails: '6.1'
 
     env:
       RAILS_VERSION: ${{ matrix.rails }}

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 * Stop requiring `set` before bundler can select the proper version. This could result in
   `already defined constant` warnings during boot (#659).
+* Require Ruby 2.7.
+* Require Rails 6.0.
 
 ## 3.1.1
 

README.md

@@ -16,9 +16,8 @@ boot it every time you run a test, rake task or migration.
 
 ## Compatibility
 
-* Ruby versions: MRI 2.5, MRI 2.6
-* Rails versions: 5.2, 6.0 (Spring is installed by default when you do
-  `rails new` to generate your application)
+* Ruby versions: MRI 2.7, MRI 3.0, MRI 3.1
+* Rails versions: 6.0, 6.1, 7.0
 
 Spring makes extensive use of `Process.fork`, so won't be able to
 provide a speed up on platforms which don't support forking (Windows, JRuby).

lib/spring/application.rb

@@ -92,8 +92,8 @@ def preload
 
       require Spring.application_root_path.join("config", "application")
 
-      unless Rails.respond_to?(:gem_version) && Rails.gem_version >= Gem::Version.new('5.2.0')
-        raise "Spring only supports Rails >= 5.2.0"
+      unless Rails.respond_to?(:gem_version) && Rails.gem_version >= Gem::Version.new('6.0.0')
+        raise "Spring only supports Rails >= 6.0.0"
       end
 
       Rails::Application.initializer :ensure_reloading_is_enabled, group: :all do

spring.gemspec

@@ -13,7 +13,7 @@ Gem::Specification.new do |gem|
   gem.files         = Dir["LICENSE.txt", "README.md", "lib/**/*", "bin/*"]
   gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
 
-  gem.required_ruby_version = ">= 2.5.0"
+  gem.required_ruby_version = ">= 2.7.0"
 
   gem.add_development_dependency 'rake'
   gem.add_development_dependency 'bump'

test/support/application_generator.rb

@@ -60,17 +60,9 @@ def generate_files
           c.sub!("https://rubygems.org", "http://rubygems.org")
           c.gsub!(/(gem '(byebug|web-console|sdoc|jbuilder)')/, "# \\1")
 
-          if @version.to_s < '5.2'
-            c.gsub!(/(gem 'sqlite3')/, "# \\1")
-          end
-
           c
         end
 
-        if @version.to_s < '5.2'
-          append_to_file(application.gemfile, "gem 'sqlite3', '< 1.4'")
-        end
-
         rewrite_file(application.path("config/environments/test.rb")) do |c|
           c.sub!(/config\.cache_classes\s*=\s*true/, "config.cache_classes = false")
           c