Set swift-sdk-id output

Author: kateinoigakukun

Diff for: .github/workflows/test.yml

@@ -39,8 +39,9 @@ jobs:
         echo "TOOLCHAINS=$TOOLCHAINS" >> $GITHUB_ENV
     - run: swift --version
     - uses: ./
+      id: setup-swiftwasm
     - run: |
         mkdir -p /tmp/hello
         cd /tmp/hello
         swift package init --type executable
-        swift build --swift-sdk wasm32-unknown-wasi
+        swift build --swift-sdk "${{ steps.setup-swiftwasm.outputs.swift-sdk-id }}"

Diff for: README.md

@@ -38,3 +38,9 @@ To install a Swift SDK for other targets, add the following to your workflow fil
 |-------|---------|-------------|
 | `tag` | The version of `swift` found in the PATH. | The tag name of swiftlang/swift repository to download the Swift SDK compatible with. |
 | `target` | `wasm32-unknown-wasi` | The target to install the Swift SDK for. |
+
+## Outputs
+
+| Output | Description |
+|-------|-------------|
+| `swift-sdk-id` | The ID of the installed Swift SDK. You can pass this to `--swift-sdk` option of `swift build` command. |

Diff for: action.yml

@@ -16,6 +16,11 @@ inputs:
       For example, `wasm32-unknown-wasi` or `wasm32-unknown-wasip1-threads`.
     required: false
     default: 'wasm32-unknown-wasi'
+outputs:
+  swift-sdk-id:
+    description: >
+      The ID of the installed Swift SDK.
+      You can pass this to `--swift-sdk` option of `swift build` command.
 runs:
   using: 'node20'
   main: 'dist/index.js'

Diff for: dist/index.js

@@ -8,6 +8,7 @@ export async function run() {
   const target = core.getInput("target");
   const sdk = swiftSDKInfo["swift-sdks"][target];
   await installSwiftSDK(sdk.url, sdk.checksum);
+  core.setOutput("swift-sdk-id", sdk.id);
 }
 
 /** @returns {Promise<string>} */