Install Haskell via setup-haskell action, install build tools for C runtime

.github/workflows/build-macos-package.yml

@@ -7,20 +7,38 @@ jobs:
     name: Build on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
-      fail-fast: true
       matrix:
-        os: [macos-latest]
+        os: [macOS-latest]
-    # env:
+        cabal: ["3.2"]
-    #   LC_ALL: C.UTF-8
+        ghc: ["8.6.5"]
 
     steps:
     - uses: actions/checkout@v1
 
+    - uses: actions/setup-haskell@v1.1.1
+      id: setup-haskell-cabal
+      name: Setup Haskell
+      with:
+        ghc-version: ${{ matrix.ghc }}
+        cabal-version: ${{ matrix.cabal }}
+
+    - name: Freeze
+      run: |
+        cabal freeze
+
+    - uses: actions/cache@v1
+      name: Cache ~/.cabal/store
+      with:
+        path: ${{ steps.setup-haskell-cabal.outputs.cabal-store }}
+        key: ${{ runner.os }}-${{ matrix.ghc }}
+        # key: ${{ runner.os }}-${{ matrix.ghc }}-${{ hashFiles('cabal.project.freeze') }}
+
     - name: Install build tools
       run: |
         brew install \
-          ghc \
+          automake \
-          cabal-install
+          autoconf \
+          libtool
 
     - name: Checkout RGL
       run: |