Rewrite ruby/setup-msys2-gcc

Author: ntkme

common.js

@@ -356,15 +356,7 @@ export function win2nix(path) {
   return path.replace(/\\/g, '/').replace(/ /g, '\\ ')
 }
 
-// JRuby is installed after setupPath is called, so folder doesn't exist
-function rubyIsUCRT(path) {
-  return !!(fs.existsSync(path) &&
-    fs.readdirSync(path, { withFileTypes: true }).find(dirent =>
-      dirent.isFile() && dirent.name.match(/^x64-(ucrt|vcruntime\d{3})-ruby\d{3}\.dll$/)))
-}
-
 export function setupPath(newPathEntries) {
-  let msys2Type = null
   const envPath = windows ? 'Path' : 'PATH'
   const originalPath = process.env[envPath].split(path.delimiter)
   let cleanPath = originalPath.filter(entry => !/\bruby\b/i.test(entry))
@@ -382,29 +374,13 @@ export function setupPath(newPathEntries) {
     core.exportVariable(envPath, cleanPath.join(path.delimiter))
   }
 
-  // Then add new path entries using core.addPath()
-  let newPath
-  const windowsToolchain = core.getInput('windows-toolchain')
-  if (windows && windowsToolchain !== 'none') {
-    // main Ruby dll determines whether mingw or ucrt build
-    msys2Type = os.arch() === 'arm64'
-      ? 'clangarm64'
-      : rubyIsUCRT(newPathEntries[0]) ? 'ucrt64' : 'mingw64'
-
-    // add MSYS2 in path for all Rubies on Windows, as it provides a better bash shell and a native toolchain
-    const msys2 = [`C:\\msys64\\${msys2Type}\\bin`, 'C:\\msys64\\usr\\bin']
-    newPath = [...newPathEntries, ...msys2]
-  } else {
-    newPath = newPathEntries
-  }
   console.log(`Entries added to ${envPath} to use selected Ruby:`)
-  for (const entry of newPath) {
+  for (const entry of newPathEntries) {
     console.log(`  ${entry}`)
   }
   core.endGroup()
 
-  core.addPath(newPath.join(path.delimiter))
-  return msys2Type
+  core.addPath(newPathEntries.join(path.delimiter))
 }
 
 export async function setupJavaHome(rubyPrefix) {

dist/index.js

@@ -72,8 +72,7 @@ export async function setupRuby(options = {}) {
 
   // JRuby can use compiled extension code, so make sure gcc exists.
   // As of Jan-2022, JRuby compiles against msvcrt.
-  if (platform.startsWith('windows') && engine === 'jruby' &&
-    !fs.existsSync('C:\\msys64\\mingw64\\bin\\gcc.exe')) {
+  if (platform.startsWith('windows') && engine === 'jruby') {
     await require('./windows').installJRubyTools()
   }