fix action

Author: melsman

.github/workflows/main.yml

@@ -31,17 +31,16 @@ jobs:
           echo "OS=$(uname -s | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
           echo "RUNHOME=$(echo $HOME)" >> $GITHUB_ENV
 
-      - name: Install smlpkg
+      - name: Install smlpkg (Linux)
+        if: ${{ env.OS == 'linux' }}
         uses: diku-dk/install-smlpkg@v1
         with:
           version: '0.1.5'
 
-      - name: Set PATH (Macos)
-        if: ${{ env.OS == 'macos' }}
-        working-directory: ${{ env.RUNHOME }}
+      - name: Install smlpkg (Macos)
+        if: ${{ env.OS == 'darwin' }}
         run: |
-          echo "[OS: $OS, HOME: $RUNHOME]"
-          echo "$HOME/.local/bin" >> $GITHUB_PATH
+          brew install smlpkg
 
       - name: Check smlpkg
         run: |
@@ -52,7 +51,7 @@ jobs:
         uses: diku-dk/install-mlkit@v1.0.1
 
       - name: Install MLKit (Macos)
-        if: ${{ env.OS == 'macos' && matrix.mlcomp == 'mlkit' }}
+        if: ${{ env.OS == 'darwin' && matrix.mlcomp == 'mlkit' }}
         run: |
           brew install mlkit