minor fix

dist/setup/index.js

@@ -63236,6 +63236,8 @@ function getGo(versionSpec, checkLatest, auth, arch = os_1.default.arch()) {
             manifest = yield getManifest(auth);
             let stableVersion = yield resolveStableVersionInput(versionSpec, arch, osPlat, manifest);
             if (!stableVersion) {
+                let archFilter = sys.getArch(arch);
+                let platFilter = sys.getPlatform();
                 const dlUrl = 'https://golang.org/dl/?mode=json&include=all';
                 let candidates = yield module.exports.getVersionsDist(dlUrl);
                 if (!candidates) {
@@ -63244,8 +63246,12 @@ function getGo(versionSpec, checkLatest, auth, arch = os_1.default.arch()) {
                 const fixedCandidates = candidates.map(item => {
                     return Object.assign(Object.assign({}, item), { version: makeSemver(item.version) });
                 });
-                stableVersion = yield resolveStableVersionInput(versionSpec, arch, osPlat, fixedCandidates);
+                stableVersion = yield resolveStableVersionInput(versionSpec, archFilter, platFilter, fixedCandidates);
+                if (!stableVersion) {
+                    throw new Error(`Unable to find Go version '${versionSpec}' for platform ${osPlat} and architecture ${arch}.`);
+                }
             }
+            versionSpec = stableVersion;
         }
         if (checkLatest) {
             core.info('Attempting to resolve the latest version from the manifest...');

src/installer.ts

@@ -52,6 +52,8 @@ export async function getGo(
     );
 
     if (!stableVersion) {
+      let archFilter = sys.getArch(arch);
+      let platFilter = sys.getPlatform();
       const dlUrl: string = 'https://golang.org/dl/?mode=json&include=all';
       let candidates:
         | IGoVersion[]
@@ -69,11 +71,19 @@ export async function getGo(
 
       stableVersion = await resolveStableVersionInput(
         versionSpec,
-        arch,
-        osPlat,
+        archFilter,
+        platFilter,
         fixedCandidates
       );
+
+      if (!stableVersion) {
+        throw new Error(
+          `Unable to find Go version '${versionSpec}' for platform ${osPlat} and architecture ${arch}.`
+        );
+      }
     }
+
+    versionSpec = stableVersion;
   }
 
   if (checkLatest) {