Improve CI

.github/workflows/test.yaml

@@ -27,7 +27,7 @@ jobs:
           - os: windows-latest
             ghc: '9.8'
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Install dependencies (Ubuntu)
       if: runner.os == 'Linux'
@@ -37,13 +37,9 @@ jobs:
 
     - name: Install GHCup
       uses: haskell/ghcup-setup@v1
-
-    - name: Install ghc/cabal
-      run: |
-        set -eux
-        ghcup install ghc --set ${{ matrix.ghc }}
-        ghcup install cabal --set latest
-      shell: bash
+      with:
+        ghc: ${{ matrix.ghc }}
+        cabal: latest
 
     - name: Build
       run: |
@@ -101,6 +97,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     env:
       MACOSX_DEPLOYMENT_TARGET: 10.13
+      HOMEBREW_CHANGE_ARCH_TO_ARM: 1
     strategy:
       fail-fast: false
       matrix:
@@ -115,22 +112,25 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Install GHCup
-        uses: haskell/ghcup-setup@v1
+      - name: Install prerequisites
+        run: |
+          bash .github/scripts/brew.sh git coreutils llvm@13 autoconf automake
+          echo PATH="$HOME/.brew/bin:$HOME/.brew/sbin:$HOME/.brew/opt/llvm@13/bin:$PATH" >> "$GITHUB_ENV"
+          echo CC="$HOME/.brew/opt/llvm@13/bin/clang" >> "$GITHUB_ENV"
+          echo CXX="$HOME/.brew/opt/llvm@13/bin/clang++" >> "$GITHUB_ENV"
+          echo LD=ld >> "$GITHUB_ENV"
+          echo AR="$HOME/.brew/opt/llvm@13/bin/llvm-ar" >> "$GITHUB_ENV"
+          echo RANLIB="$HOME/.brew/opt/llvm@13/bin/llvm-ranlib" >> "$GITHUB_ENV"
+
+      - uses: haskell/ghcup-setup@v1
+        with:
+          ghc: ${{ matrix.ghc }}
+          cabal: latest
 
       - name: Run build
         run: |
-          bash .github/scripts/brew.sh git coreutils llvm@13 autoconf automake
-          export PATH="$HOME/.brew/bin:$HOME/.brew/sbin:$HOME/.brew/opt/llvm@13/bin:$PATH"
-          export CC="$HOME/.brew/opt/llvm@13/bin/clang"
-          export CXX="$HOME/.brew/opt/llvm@13/bin/clang++"
-          export LD=ld
-          export AR="$HOME/.brew/opt/llvm@13/bin/llvm-ar"
-          export RANLIB="$HOME/.brew/opt/llvm@13/bin/llvm-ranlib"
           cabal update
           cabal test
-        env:
-          HOMEBREW_CHANGE_ARCH_TO_ARM: 1
 
   freebsd:
     runs-on: ${{ matrix.os }}
@@ -152,6 +152,9 @@ jobs:
 
       - name: Install GHCup
         uses: haskell/ghcup-setup@v1
+        with:
+          ghc: ${{ matrix.ghc }}
+          cabal: latest
 
       - name: Run build
         run: |