Remove ruby master mingw build

README.md

@@ -15,7 +15,7 @@ This action currently supports these versions of MRI, JRuby and TruffleRuby:
 
 | Interpreter | Versions |
 | ----------- | -------- |
-| `ruby` | 1.9.3, 2.0.0, 2.1.9, 2.2, all versions from 2.3.0 until 4.1.0-preview1, head, debug, mingw, mswin, ucrt |
+| `ruby` | 1.9.3, 2.0.0, 2.1.9, 2.2, all versions from 2.3.0 until 4.1.0-preview1, head, debug, mswin, ucrt |
 | `jruby` | 9.1.17.0 - 10.1.3.0, head |
 | `truffleruby` | 19.3.0 - 40.0.0, head |
 | `truffleruby+graalvm` | 21.2.0 - 40.0.0, head |
@@ -28,8 +28,7 @@ Native extensions are automatically compiled with AddressSanitizer when using `r
 
 `ruby-asan` and `asan-release` are currently only available on `ubuntu-24.04` and `ubuntu-26.04`.
 
-Regarding Windows ruby master builds, `mingw` is a MSYS2/MinGW build, `head` & `ucrt` are MSYS2/UCRT64
-builds, and `mswin` is a MSVC/VS 2022 build.
+Regarding Windows ruby master builds, `head` & `ucrt` are MSYS2/UCRT64 builds, and `mswin` is a MSVC/VS 2022 build.
 
 Preview and RC versions of Ruby might be available too on Ubuntu and macOS (not on Windows).
 However, it is recommended to test against `ruby-head` rather than previews,
@@ -62,7 +61,7 @@ only has builds of CRuby 3.2 and newer, as older CRuby versions do not compile o
 
 The prebuilt releases are generated by [ruby-builder](https://github.com/ruby/ruby-builder)
 and on Windows by [RubyInstaller2](https://github.com/oneclick/rubyinstaller2).
-The `mingw`, `ucrt` and `mswin` builds are generated by [ruby-loco](https://github.com/MSP-Greg/ruby-loco).
+The `ucrt` and `mswin` builds are generated by [ruby-loco](https://github.com/MSP-Greg/ruby-loco).
 `ruby-head` is generated by [ruby-dev-builder](https://github.com/ruby/ruby-dev-builder),
 `jruby-head` is generated by [jruby-dev-builder](https://github.com/ruby/jruby-dev-builder),
 `truffleruby-head` and `truffleruby+graalvm-head` are generated by [truffleruby-dev-builder](https://github.com/ruby/truffleruby-dev-builder).

common.js

@@ -70,7 +70,7 @@ export async function time(name, block) {
 
 export function isHeadVersion(rubyVersion) {
   // asan-release counts as "head" because the version cannot be selected -- you can only get whatever's latest
-  return ['head', 'debug',  'mingw', 'mswin', 'ucrt', 'asan', 'asan-release'].includes(rubyVersion)
+  return ['head', 'debug', 'mswin', 'ucrt', 'asan', 'asan-release'].includes(rubyVersion)
 }
 
 export function isStableVersion(engine, rubyVersion) {

generate-test-matrix.rb

@@ -60,7 +60,7 @@ def unique_versions(versions, segment_count, *symbolic)
 matrix += (macos_arm64_runners + ubuntu_runners).product(truffleruby_versions)
 
 # ruby-loco: head
-ruby_loco_versions = %w[mingw mswin ucrt]
+ruby_loco_versions = %w[mswin ucrt]
 matrix += windows_x64_runners.product(ruby_loco_versions)
 
 # asan: latest release + head

generate-windows-versions.rb

@@ -63,9 +63,6 @@ def validate(versions, allowed_urls_regexps)
   'arm64' => 'https://github.com/oneclick/rubyinstaller2/releases/download/rubyinstaller-head/rubyinstaller-head-arm.7z',
   'x64' => 'https://github.com/oneclick/rubyinstaller2/releases/download/rubyinstaller-head/rubyinstaller-head-x64.7z'
 }
-versions['mingw'] = {
-  'x64' => 'https://github.com/MSP-Greg/ruby-loco/releases/download/ruby-master/ruby-mingw.7z'
-}
 versions['mswin'] = {
   'x64' => 'https://github.com/MSP-Greg/ruby-loco/releases/download/ruby-master/ruby-mswin.7z'
 }
@@ -89,8 +86,6 @@ def validate(versions, allowed_urls_regexps)
       case raw_version
       when 'head', 'ucrt'
         "#{arch}-mingw-ucrt"
-      when 'mingw'
-        "#{arch}-mingw32"
       when 'mswin'
         "#{arch}-mswin64"
       else

windows-toolchain-versions.json

@@ -342,9 +342,6 @@
     "arm64": "https://github.com/ruby/setup-msys2-gcc/releases/latest/download/msys2-clangarm64.7z",
     "x64": "https://github.com/ruby/setup-msys2-gcc/releases/latest/download/msys2-ucrt64.7z"
   },
-  "mingw": {
-    "x64": "https://github.com/ruby/setup-msys2-gcc/releases/download/v20261024.010459/msys2-mingw64.7z"
-  },
   "mswin": {
     "x64": "https://github.com/ruby/setup-msys2-gcc/releases/latest/download/vcpkg-x64-windows.7z"
   },

windows-versions.json

@@ -342,9 +342,6 @@
     "arm64": "https://github.com/oneclick/rubyinstaller2/releases/download/rubyinstaller-head/rubyinstaller-head-arm.7z",
     "x64": "https://github.com/oneclick/rubyinstaller2/releases/download/rubyinstaller-head/rubyinstaller-head-x64.7z"
   },
-  "mingw": {
-    "x64": "https://github.com/MSP-Greg/ruby-loco/releases/download/ruby-master/ruby-mingw.7z"
-  },
   "mswin": {
     "x64": "https://github.com/MSP-Greg/ruby-loco/releases/download/ruby-master/ruby-mswin.7z"
   },