Use github CI

Author: hasufell

.github/workflows/test.yaml

@@ -0,0 +1,52 @@
+name: Haskell CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build-cabal:
+
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+        ghc: ['8.0.2', '8.2.2', '8.4.4', '8.6.5', '8.8.4', '8.10.7', '9.0.1', '9.2.1']
+        cabal: ['3.6.2.0']
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - if: matrix.os == 'windows-latest'
+      name: Install ghcup on windows
+      run: Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $false,$true,$true,$false,$false,$false,$false,"C:\"
+
+    - if: matrix.os == 'windows-latest'
+      name: Add ghcup to PATH
+      run: echo "/c/ghcup/bin" >> $GITHUB_PATH
+      shell: bash
+
+    - if: matrix.os != 'windows-latest'
+      name: Install ghcup on non-windows
+      run: curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | BOOTSTRAP_HASKELL_NONINTERACTIVE=1 BOOTSTRAP_HASKELL_MINIMAL=1 sh
+
+    - name: Install ghc/cabal
+      run: |
+        ghcup install ghc ${{ matrix.ghc }}
+        ghcup install cabal ${{ matrix.cabal }}
+      shell: bash
+
+    - name: Update cabal index
+      run: cabal update
+      shell: bash
+
+    - name: Build
+      run: cabal build --enable-tests --enable-benchmarks
+      shell: bash
+
+    - name: Run tests
+      run: cabal test
+      shell: bash