Compress files and avoid permission issues

Author: chenglou

.github/workflows/ci.yml

@@ -18,11 +18,11 @@ jobs:
     steps:
     - uses: actions/[email protected]
 
-    # - name: Cache OCaml's opam
-    #   uses: actions/[email protected]
-    #   with:
-    #     path: ~/.opam
-    #     key: ${{matrix.os}}-latest-ocaml-4.06.1
+    - name: Cache OCaml's opam
+      uses: actions/[email protected]
+      with:
+        path: ~/.opam
+        key: ${{matrix.os}}-latest-ocaml-4.06.1
 
     - name: Use OCaml
       uses: avsm/[email protected]
@@ -46,7 +46,12 @@ jobs:
     - run: "& $env:CYGWIN_ROOT\\bin\\ocaml-env exec -- make"
       if: matrix.os == 'windows-latest'
 
+    # Also avoids artifacts upload permission loss:
+    # https://github.com/actions/upload-artifact/tree/ee69f02b3dfdecd58bb31b4d133da38ba6fe3700#permission-loss
+    - name: Compress files
+      run: tar -cvf rescript-editor-support.tar lib/rescript-editor-support.exe
+
     - uses: actions/upload-artifact@v2
       with:
         name: ${{matrix.os}}-rescript-editor-support.exe
-        path: lib/rescript-editor-support.exe
+        path: rescript-editor-support.tar