Fix rustup installation on Windows

action.yml

@@ -4,7 +4,7 @@ author: 'Héctor Ramón'
 inputs:
   rust-version:
     description: 'The toolchain name, such as stable, nighly, or 1.8.0'
-    default: 'stable'
+    default: '1.37.0'
 runs:
   using: 'node12'
   main: 'lib/main.js'

lib/main.js

@@ -17,12 +17,11 @@ var __importStar = (this && this.__importStar) || function (mod) {
 Object.defineProperty(exports, "__esModule", { value: true });
 const core = __importStar(require("@actions/core"));
 const rustup = __importStar(require("./rustup"));
-const os = __importStar(require("os"));
 function run() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
             const version = core.getInput('rust-version');
-            if (version && os.platform() != 'win32') {
+            if (version) {
                 yield rustup.install(version);
             }
         }

lib/rustup.js

@@ -35,7 +35,6 @@ function install(version) {
         }
         toolPath = path.join(toolPath, 'bin');
         core.addPath(toolPath);
-        yield exec.exec('rustup', ['update']);
     });
 }
 exports.install = install;
@@ -50,17 +49,13 @@ function acquireRust(version) {
             throw `Failed to download rustup: ${error}`;
         }
         if (WINDOWS) {
-            // TODO: Fix this
-            // It currently fails with:
-            // error: 'rustup-init.exe' is not installed for the toolchain 'stable-x86_64-pc-windows-msvc'
             yield io.cp(script, script + '.exe');
             script += '.exe';
-            const powershell = yield io.which('powershell', true);
+            console.log(yield io.which('rustup', true));
             yield exec.exec(`"${script}"`, [
-                '--default-host',
-                'gnu',
+                '-y',
                 '--default-toolchain',
-                version,
+                'none',
             ]);
         }
         else {
@@ -72,7 +67,7 @@ function acquireRust(version) {
 }
 function rustupUrl() {
     if (WINDOWS) {
-        return "https://static.rust-lang.org/rustup/dist/x86_64-pc-windows-gnu/rustup-init.exe";
+        return "https://win.rustup.rs";
     }
     else {
         return "https://sh.rustup.rs";

src/main.ts

@@ -6,7 +6,7 @@ async function run() {
   try {
     const version = core.getInput('rust-version');
 
-    if(version && os.platform() != 'win32') {
+    if(version) {
       await rustup.install(version);
     }
   } catch (error) {

src/rustup.ts

@@ -21,8 +21,6 @@ export async function install(version: string) {
 
   toolPath = path.join(toolPath, 'bin');
   core.addPath(toolPath);
-
-  await exec.exec('rustup', ['update']);
 }
 
 async function acquireRust(version: string): Promise<string> {
@@ -36,21 +34,17 @@ async function acquireRust(version: string): Promise<string> {
   }
 
   if(WINDOWS) {
-    // TODO: Fix this
-    // It currently fails with:
-    // error: 'rustup-init.exe' is not installed for the toolchain 'stable-x86_64-pc-windows-msvc'
     await io.cp(script, script + '.exe');
     script += '.exe';
 
-    const powershell = await io.which('powershell', true);
+    console.log(await io.which('rustup', true));
 
     await exec.exec(
       `"${script}"`,
       [
-        '--default-host',
-        'gnu',
+        '-y',
         '--default-toolchain',
-        version,
+        'none',
       ]
     );
   } else {
@@ -64,7 +58,7 @@ async function acquireRust(version: string): Promise<string> {
 
 function rustupUrl(): string {
   if(WINDOWS) {
-    return "https://static.rust-lang.org/rustup/dist/x86_64-pc-windows-gnu/rustup-init.exe"
+    return "https://win.rustup.rs"
   } else {
     return "https://sh.rustup.rs"
   }