Pin dune

Author: vouillon

.github/workflows/js_of_ocaml.yml

@@ -141,6 +141,9 @@ jobs:
         with:
           ocaml-compiler: ${{ matrix.ocaml-compiler }}
 
+      - name: Pin dune
+        run: opam pin add dune -n 3.19.1
+
       # Work-around a race between reinstalling mingw-w64-shims
       # (because of conf-pkg-config optional dep) and installing other
       # packages that implicitly depend on mingw-w64-shims.

.github/workflows/wasm_of_ocaml.yml

@@ -156,6 +156,9 @@ jobs:
         with:
           ocaml-compiler: ${{ matrix.ocaml-compiler }}
 
+      - name: Pin dune
+        run: opam pin add dune -n 3.19.1
+
       - name: Set-up Binaryen
         uses: Aandreba/[email protected]
         with: