feat: use last GHCup version by default

.github/workflows/test-ghcup.yaml

@@ -12,20 +12,20 @@ jobs:
           - ubuntu-latest
           - macos-latest
           - windows-latest
+        version:
+          - latest
+          - '0.1.30.0'
     runs-on: ${{ matrix.runs-on }}
     steps:
       - uses: actions/checkout@v4
 
       - uses: ./ghcup
         with:
-          version: "0.1.30.0"
+          version: ${{ matrix.version }}
 
       - run: ghcup config
-
       - run: ghcup debug-info
-
       - run: ghcup tool-requirements
-
       - run: ghcup list
 
       - run: ghcup install ghc latest --set

ghcup/action.yml

@@ -8,10 +8,9 @@ branding:
 inputs:
   version:
     description: Version to install
-    required: true
+    default: latest
   extra-release-channels:
     description: Additional release-channels
-    required: true
 
 outputs:
   path:

ghcup/src/index.ts

@@ -2,10 +2,10 @@ import { main } from "./main.ts"
 import core from "@actions/core";
 
 try {
-main({
-  version: core.getInput("version"),
-  extra_release_channels: core.getMultilineInput("extra-release-channels")
-})
+  main({
+    version: core.getInput("version"),
+    extra_release_channels: core.getMultilineInput("extra-release-channels")
+  })
 } catch (error) {
   core.setFailed((error as Error).message);
 }

ghcup/src/main.ts

@@ -7,8 +7,6 @@ import exec from '@actions/exec';
 
 const ext = platform.isWindows ? ".exe" : "";
 
-const metadata_url = "https://raw.githubusercontent.com/haskell/ghcup-metadata/refs/heads/develop/ghcup-0.0.8.yaml";
-
 type Architecture = typeof platform.arch;
 type GHCupArch = 'aarch64' | 'armv7' | 'i386' | 'x86_64';
 
@@ -29,7 +27,11 @@ const ghcup_os_map: Map<Platform, GHCupOS> = new Map([
 ]);
 
 function ghcup_url(version: string, arch: GHCupArch, os: GHCupOS): string {
-  return `https://downloads.haskell.org/ghcup/${version}/${arch}-${os}-ghcup-${version}${ext}`;
+  if (version == 'latest') {
+    return `https://downloads.haskell.org/ghcup/${arch}-${os}-ghcup${ext}`;
+  } else {
+    return `https://downloads.haskell.org/ghcup/${version}/${arch}-${os}-ghcup-${version}${ext}`;
+  }
 }
 
 async function ghcup(version: string) {
@@ -40,16 +42,12 @@ async function ghcup(version: string) {
 
     const arch = ghcup_arch_map.get(platform.arch);
     if (arch == undefined) {
-      const msg =  `GHCup does not support architecture ${platform.arch}`;
-      // core.setFailed(msg);
-      throw msg;
+      throw `GHCup does not support architecture ${platform.arch}`;
     }
 
     const os = ghcup_os_map.get(platform.platform);
     if (os == undefined) {
-      const msg = `GHCup does not support platform ${platform.platform}`
-      // core.setFailed(msg);
-      throw msg;
+      throw `GHCup does not support platform ${platform.platform}`;
     }
 
     const url = ghcup_url(version, arch, os);