Switch to Cabal (#4)

* Enable CI on every branch

* Use model cabal workflow

+ From https://github.com/haskell/actions/tree/f334d58da81a3d707ada2ce33c610252737af896/setup#model-cabal-workflow-with-caching

* Remove stack

* Upgrade cabal-version, move extensions to cabal file

Author: rasheedja

.github/workflows/haskell.yml

@@ -2,7 +2,8 @@ name: Haskell CI
 
 on:
   push:
-    branches: [ "master" ]
+    branches:
+      - '*'
   pull_request:
     branches: [ "master" ]
 
@@ -18,33 +19,76 @@ jobs:
       - uses: actions/checkout@v3
       - uses: haskell-actions/run-ormolu@v11
   build:
+    name: GHC ${{ matrix.ghc-version }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+        ghc-version: ['9.6', '9.4', '9.2', '9.0', '8.10']
 
-    runs-on: ubuntu-latest
+        include:
+          - os: windows-latest
+            ghc-version: '9.6'
+          - os: macos-latest
+            ghc-version: '9.6'
 
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-haskell@v1
-      with:
-        ghc-version: '8.10.3'
-        cabal-version: '3.2'
-
-    - 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: Run tests
-      run: cabal test all
+      - uses: actions/checkout@v3
+
+      - name: Set up GHC ${{ matrix.ghc-version }}
+        uses: haskell/actions/setup@v2
+        id: setup
+        with:
+          ghc-version: ${{ matrix.ghc-version }}
+          # Defaults, added for clarity:
+          cabal-version: 'latest'
+          cabal-update: true
+
+      - name: Installed minor versions of GHC and Cabal
+        shell: bash
+        run: |
+          GHC_VERSION=$(ghc --numeric-version)
+          CABAL_VERSION=$(cabal --numeric-version)
+          echo "GHC_VERSION=${GHC_VERSION}"     >> "${GITHUB_ENV}"
+          echo "CABAL_VERSION=${CABAL_VERSION}" >> "${GITHUB_ENV}"
+
+      - name: Configure the build
+        run: |
+          cabal configure --enable-tests --enable-benchmarks --disable-documentation
+          cabal build --dry-run
+        # The last step generates dist-newstyle/cache/plan.json for the cache key.
+
+      - name: Restore cached dependencies
+        uses: actions/cache/restore@v3
+        id: cache
+        with:
+          path: ${{ steps.setup.outputs.cabal-store }}
+          key: ${{ runner.os }}-ghc-${{ env.GHC_VERSION }}-cabal-${{ env.CABAL_VERSION }}-plan-${{ hashFiles('**/plan.json') }}
+          restore-keys: |
+            ${{ runner.os }}-ghc-${{ env.GHC_VERSION }}-cabal-${{ env.CABAL_VERSION }}-
+
+      - name: Install dependencies
+        run: cabal build all --only-dependencies
+
+      # Cache dependencies already here, so that we do not have to rebuild them should the subsequent steps fail.
+      - name: Save cached dependencies
+        uses: actions/cache/save@v3
+        # Caches are immutable, trying to save with the same key would error.
+        if: ${{ !steps.cache.outputs.cache-hit
+          || steps.cache.outputs.cache-primary-key != steps.cache.outputs.cache-matched-key }}
+        with:
+          path: ${{ steps.setup.outputs.cabal-store }}
+          key: ${{ steps.cache.outputs.cache-primary-key }}
+
+      - name: Build
+        run: cabal build all
+
+      - name: Run tests
+        run: cabal test all
+
+      - name: Check cabal file
+        run: cabal check
+
+      - name: Build documentation
+        run: cabal haddock all

Setup.hs

@@ -1,4 +1,4 @@
-cabal-version: 1.12
+cabal-version: 3.6
 
 -- This file has been generated from package.yaml by hpack version 0.34.4.
 --
@@ -14,7 +14,7 @@ bug-reports:    https://github.com/rasheedja/simplex-method/issues
 author:         Junaid Rasheed
 maintainer:     [email protected]
 copyright:      BSD-3
-license:        BSD3
+license:        BSD-3-Clause
 license-file:   LICENSE
 build-type:     Simple
 extra-source-files:
@@ -25,26 +25,30 @@ source-repository head
   type: git
   location: https://github.com/rasheedja/simplex-method
 
+common common-extensions
+  default-extensions:
+    LambdaCase
+    TupleSections
+
 library
+  import: common-extensions
   exposed-modules:
       Linear.Simplex.Prettify
       Linear.Simplex.Simplex
       Linear.Simplex.Types
       Linear.Simplex.Util
-  other-modules:
-      Paths_simplex_method
   hs-source-dirs:
       src
   build-depends:
       base >=4.7 && <5
   default-language: Haskell2010
 
 test-suite simplex-haskell-test
+  import: common-extensions
   type: exitcode-stdio-1.0
   main-is: Spec.hs
   other-modules:
       TestFunctions
-      Paths_simplex_method
   hs-source-dirs:
       test
   build-depends:

package.yaml

@@ -1,6 +1,3 @@
-{-# LANGUAGE LambdaCase #-}
-{-# LANGUAGE TupleSections #-}
-
 -- |
 -- Module      : Linear.Simplex.Simplex
 -- Description : Implements the twoPhaseSimplex method

simplex-method.cabal

@@ -1,5 +1,3 @@
-{-# LANGUAGE LambdaCase #-}
-
 -- |
 -- Module      : Linear.Simplex.Util
 -- Description : Helper functions