Add Haskell testing to pipeline (#61)

* Add testing for Haskell

* Update dependencies

* Use updated action to install ghc

* Add test feedback on Haskell pipeline

* Add sha to status

* Add permission to write statuses

* Fix incorrect status name

* Change workflow triggers

.github/workflows/haskell.yml

@@ -0,0 +1,85 @@
+name: Haskell CI
+
+on:
+  pull_request:
+    branches: [ "main" ]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  statuses: write
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - uses: haskell/actions/setup@v2
+      with:
+        ghc-version: '9.2.7'
+        cabal-version: '3.6'
+
+    - name: Cache
+      uses: actions/cache@v3
+      env:
+        cache-name: cache-cabal
+      with:
+        path: ~/.cabal
+        key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/*.cabal') }}-${{ hashFiles('**/cabal.project') }}
+        restore-keys: |
+          ${{ runner.os }}-build-${{ env.cache-name }}-
+          ${{ runner.os }}-build-
+          ${{ runner.os }}-
+
+    - name: Install dependencies
+      run: |
+        cabal update
+        cabal build --only-dependencies --enable-tests --enable-benchmarks
+    - name: Build
+      run: cabal build --enable-tests --enable-benchmarks all
+
+
+
+    - name: Set test status to pending
+      uses: Sibz/github-status-action@v1
+      with:
+        authToken: ${{secrets.GITHUB_TOKEN}}
+        context: "Haskell tests"
+        description: "Testing Haskell code"
+        state: "pending"
+        sha: ${{github.event.pull_request.head.sha || github.sha}}
+    - name: Run tests
+      id: test
+      run: cabal test all
+    - name: Report failure status
+      if: ${{ failure() && steps.test.conclusion == 'failure' }}
+      uses: Sibz/github-status-action@v1
+      with:
+        authToken: ${{secrets.GITHUB_TOKEN}}
+        context: "Haskell tests"
+        description: "Haskell tests failed"
+        state: "failure"
+        sha: ${{github.event.pull_request.head.sha || github.sha}}
+
+    - name: Report test failures 
+      if: ${{ failure() && steps.test.conclusion == 'failure' }}
+      run: echo -e "::warning title=Haskell test report::Haskell tests failed."
+
+    - name: Report test success status
+      if: success()
+      uses: Sibz/github-status-action@v1
+      with:
+        authToken: ${{secrets.GITHUB_TOKEN}}
+        context: "Haskell tests"
+        description: "No spelling mistakes detected"
+        state: "success"
+        sha: ${{github.event.pull_request.head.sha || github.sha}}
+
+    - name: Report test success
+      if: success()
+      run: echo "::notice title=Haskell test report::All tests passed."
+
+
+