CI: Install OCaml, Roc, and Stack (for Haskell)

Author: ad-si

Diff for: .github/workflows/run.yaml

@@ -69,6 +69,9 @@ jobs:
       - name: Set up Nushell
         run: brew install nushell
 
+      - name: Set up OCaml
+        run: brew install ocaml
+
       - name: Set up Osh
         run: brew install osh
 
@@ -81,9 +84,17 @@ jobs:
       - name: Set up Racket
         run: brew install minimal-racket
 
+      - name: Set up Roc
+        uses: hasnep/setup-roc@main
+
       - name: Set up Scala
         run: brew install scala
 
+      - name: Set up Stack
+        uses: haskell-actions/setup@v2
+        with:
+          enable-stack: true
+
       - name: Set up Typst
         run: brew install typst