Fix untar of xz files on linux

Author: robertoraggi

.github/workflows/mlir.yaml

@@ -9,20 +9,19 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Setup emscripten cache
-        uses: actions/cache@v4
-        with:
-          path: ~/.emscripten-cache
-          key: ${{ runner.os }}-emscripten
-          restore-keys: |
-            ${{ runner.os }}-emscripten
+      - name: Install emsdk
+        run: |
+          git clone --depth 1 http://github.com/emscripten-core/emsdk.git /opt/emsdk
+          /opt/emsdk/emsdk install latest
+          /opt/emsdk/emsdk activate latest
 
       - name: Install dependencies
         run: |
           npm ci
 
       - name: Build
         run: |
+          source "/opt/emsdk/emsdk_env.sh"
           npm run build:mlir
 
       - name: Upload artifacts

scripts/build-mlir.mjs

@@ -40,7 +40,7 @@ async function download({ pkg, version, outdir = "." }) {
   // unpack
   if (!(await zx.fs.exists(zx.path.join(outdir, pkg)))) {
     await zx.fs.mkdir(zx.path.join(outdir, pkg), { recursive: true });
-    await $`tar jxf ${outdir}/${fileName} -C ${outdir}/${pkg} --strip-components=1`.quiet();
+    await $`tar xf ${outdir}/${fileName} -C ${outdir}/${pkg} --strip-components=1`.quiet();
   }
 }