Remove Rubinius support

* Fixes https://github.com/ruby/setup-ruby/issues/101

.github/workflows/test.yml

@@ -19,7 +19,6 @@ jobs:
         # Use various version syntax here for testing
         ruby: [ 2.1, 2.2, 2.3, 2.4, 2.5, 2.6.6, 2.7, ruby-head, debug, jruby-9.1, jruby, jruby-head, truffleruby, truffleruby-head ]
         include:
-        - { os: ubuntu-18.04, ruby: rubinius }
         - { os: windows-2016, ruby: mingw }
         - { os: windows-2019, ruby: mingw }
         - { os: windows-2019, ruby: mswin }
@@ -60,6 +59,10 @@ jobs:
             echo 'ridk is unavailable'
           }
         }
+    - name: RbConfig::CONFIG
+      run: ruby -rrbconfig -rpp -e 'pp RbConfig::CONFIG'
+    - name: RbConfig::MAKEFILE_CONFIG
+      run: ruby -rrbconfig -rpp -e 'pp RbConfig::MAKEFILE_CONFIG'
 
     - name: Subprocess test
       run: ruby test_subprocess.rb
@@ -71,6 +74,7 @@ jobs:
     - name: C extension test
       run: gem install json:2.2.0 --no-document
     - run: bundle --version
+    # This step is redundant with `bundler-cache: true` but is there to check a redundant `bundle install` still works
     - run: bundle install
     - run: bundle exec rake --version
 

README.md

@@ -17,7 +17,6 @@ This action currently supports these versions of MRI, JRuby and TruffleRuby:
 | Ruby | 2.1.9, 2.2, 2.3.0 - 2.3.8, 2.4.0 - 2.4.10, 2.5.0 - 2.5.8, 2.6.0 - 2.6.6, 2.7.2, head, debug, mingw, mswin |
 | JRuby | 9.1.17.0, 9.2.9.0 - 9.2.13.0, head |
 | TruffleRuby | 19.3.0 - 20.2.0, head |
-| Rubinius | 4.14 |
 
 `ruby-debug` is the same as `ruby-head` but with assertions enabled (`-DRUBY_DEBUG=1`).  
 On Windows, `mingw` and `mswin` are `ruby-head` builds using the MSYS2/MinGW and the MSVC toolchains respectively.
@@ -40,8 +39,6 @@ The action works for all [GitHub-hosted runners](https://help.github.com/en/acti
 | macOS   | `macos-latest`   (= `macos-10.15`)  | |
 | Windows | `windows-latest` (= `windows-2019`) | `windows-2016` |
 
-Rubinius is only available on `ubuntu-18.04`.
-
 The prebuilt releases are generated by [ruby-builder](https://github.com/ruby/ruby-builder)
 and on Windows by [RubyInstaller2](https://github.com/oneclick/rubyinstaller2).
 `mingw` and `mswin` builds are generated by [ruby-loco](https://github.com/MSP-Greg/ruby-loco).
@@ -66,6 +63,7 @@ jobs:
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: 2.6 # Not needed with a .ruby-version file
+        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
     - run: bundle install
     - run: bundle exec rake
 ```
@@ -91,6 +89,7 @@ jobs:
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
     - run: bundle install
     - run: bundle exec rake
 ```
@@ -131,12 +130,14 @@ This action provides a way to automatically run `bundle install` and cache the r
         bundler-cache: true
 ```
 
+Note that any step doing `bundle install` (for the root `Gemfile`) or `gem install bundler` can be removed with `bundler-cache: true`.
+
 This caching speeds up installing gems significantly and avoids too many requests to RubyGems.org.  
 It needs a `Gemfile` (or `$BUNDLE_GEMFILE` or `gems.rb`) under the [`working-directory`](#working-directory).  
 If there is a `Gemfile.lock` (or `$BUNDLE_GEMFILE.lock` or `gems.locked`), `bundle config --local deployment true` is used.
 
 To perform caching, this action will use `bundle config --local path vendor/bundle`.  
-Therefore, the Bundler `path` should not be changed in your workflow for the cache to work.
+Therefore, the Bundler `path` should not be changed in your workflow for the cache to work (no `bundle config path`).
 
 ### Caching `bundle install` manually
 

dist/index.js

@@ -44499,12 +44499,6 @@ function getVersions(platform) {
     ]
   }
 
-  if (platform === 'ubuntu-18.04') {
-    versions['rubinius'] = [
-      "4.14"
-    ]
-  }
-
   return versions
 }
 
@@ -51349,8 +51343,6 @@ async function installBundler(bundlerVersionInput, lockFile, platform, rubyPrefi
     console.log(`Using Bundler 2 shipped with ${engine}-${rubyVersion}`)
   } else if (engine === 'truffleruby' && bundlerVersion === '1') {
     console.log(`Using Bundler 1 shipped with ${engine}`)
-  } else if (engine === 'rubinius') {
-    console.log(`Rubinius only supports the version of Bundler shipped with it`)
   } else {
     const gem = path.join(rubyPrefix, 'bin', 'gem')
     await exec.exec(gem, ['install', 'bundler', '-v', `~> ${bundlerVersion}`, '--no-document'])
@@ -52860,6 +52852,7 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "install", function() { return install; });
 const os = __webpack_require__(87)
 const path = __webpack_require__(622)
+const core = __webpack_require__(186)
 const exec = __webpack_require__(514)
 const io = __webpack_require__(436)
 const tc = __webpack_require__(188)
@@ -52885,11 +52878,7 @@ async function downloadAndExtract(platform, engine, version) {
   const rubyPrefix = path.join(rubiesDir, `${engine}-${version}`)
 
   // Set the PATH now, so the MSYS2 'tar' is in Path on Windows
-  if (engine === 'rubinius') {
-    common.setupPath([path.join(rubyPrefix, 'bin'), path.join(rubyPrefix, 'gems', 'bin')])
-  } else {
-    common.setupPath([path.join(rubyPrefix, 'bin')])
-  }
+  common.setupPath([path.join(rubyPrefix, 'bin')])
 
   await io.mkdirP(rubiesDir)
 

index.js

@@ -227,8 +227,6 @@ async function installBundler(bundlerVersionInput, lockFile, platform, rubyPrefi
     console.log(`Using Bundler 2 shipped with ${engine}-${rubyVersion}`)
   } else if (engine === 'truffleruby' && bundlerVersion === '1') {
     console.log(`Using Bundler 1 shipped with ${engine}`)
-  } else if (engine === 'rubinius') {
-    console.log(`Rubinius only supports the version of Bundler shipped with it`)
   } else {
     const gem = path.join(rubyPrefix, 'bin', 'gem')
     await exec.exec(gem, ['install', 'bundler', '-v', `~> ${bundlerVersion}`, '--no-document'])

ruby-builder-versions.js

@@ -22,11 +22,5 @@ export function getVersions(platform) {
     ]
   }
 
-  if (platform === 'ubuntu-18.04') {
-    versions['rubinius'] = [
-      "4.14"
-    ]
-  }
-
   return versions
 }

ruby-builder.js

@@ -1,5 +1,6 @@
 const os = require('os')
 const path = require('path')
+const core = require('@actions/core')
 const exec = require('@actions/exec')
 const io = require('@actions/io')
 const tc = require('@actions/tool-cache')
@@ -25,11 +26,7 @@ async function downloadAndExtract(platform, engine, version) {
   const rubyPrefix = path.join(rubiesDir, `${engine}-${version}`)
 
   // Set the PATH now, so the MSYS2 'tar' is in Path on Windows
-  if (engine === 'rubinius') {
-    common.setupPath([path.join(rubyPrefix, 'bin'), path.join(rubyPrefix, 'gems', 'bin')])
-  } else {
-    common.setupPath([path.join(rubyPrefix, 'bin')])
-  }
+  common.setupPath([path.join(rubyPrefix, 'bin')])
 
   await io.mkdirP(rubiesDir)
 

versions-strings-for-builder.rb

@@ -3,14 +3,16 @@ versions = eval hash
 
 by_minor = versions[:ruby].group_by { |v| v[/^\d\.\d/] }
 
-p by_minor['2.1']
-p by_minor['2.2']
-p by_minor['2.3']
-
-(4..7).each do |minor|
+(1..7).each do |minor|
   p by_minor["2.#{minor}"].map { |v| "ruby-#{v}" }
 end
 
+puts
+p (versions[:truffleruby] - %w[head]).map { |v| "truffleruby-#{v}" }
+
+puts
 p (versions[:jruby] - %w[head]).map { |v| "jruby-#{v}" }
 
-p (versions[:truffleruby] - %w[head]).map { |v| "truffleruby-#{v}" }
+(versions[:jruby] - %w[head]).each do |v|
+  puts "- { os: windows-latest, jruby-version: #{v}, ruby: jruby-#{v} }"
+end