Examine behaviour of hlint and fourmolu without Stack

.github/workflows/integrate.yaml

@@ -18,17 +18,17 @@ jobs:
   check-formatting:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.4.0
 
-      - uses: actions/cache@v2.1.4
-        name: Add Stack files to cache
-        with:
-          path: ~/.stack
-          key: ${{ runner.os }}-stack-formatting
-          restore-keys: ${{ runner.os }}-stack-
+      # - uses: actions/cache@v2.1.4
+      #   name: Add Stack files to cache
+      #   with:
+      #     path: ~/.stack
+      #     key: ${{ runner.os }}-stack-formatting
+      #     restore-keys: ${{ runner.os }}-stack-
 
-      - run: stack install fourmolu
-        name: Install fourmolu
+      # - run: stack install fourmolu
+      #   name: Install fourmolu
 
       - run: ./.github/format.sh
         name: Run fourmolu
@@ -36,32 +36,34 @@ jobs:
   run-linter:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.4.0
 
-      - uses: actions/cache@v2.1.4
-        name: Add Stack files to cache
-        with:
-          path: ~/.stack
-          key: ${{ runner.os }}-stack-lint
-          restore-keys: ${{ runner.os }}-stack-
+      # - uses: actions/cache@v2.1.4
+      #   name: Add Stack files to cache
+      #   with:
+      #     path: ~/.stack
+      #     key: ${{ runner.os }}-stack-lint
+      #     restore-keys: ${{ runner.os }}-stack-
 
-      - run: stack install hlint
-        name: Install hlint
+      # - run: stack install hlint
+      #   name: Install hlint
 
-      - run: ~/.local/bin/hlint $(git ls-tree -r HEAD --full-tree --name-only | grep -E '.*\.hs')
+      # - run: ~/.local/bin/hlint $(git ls-tree -r HEAD --full-tree --name-only | grep -E '.*\.hs')
+      - run: hlint $(git ls-tree -r HEAD --full-tree --name-only | grep -E '.*\.hs')
         name: Run hlint
 
   check-build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: cachix/install-nix-action@v13
+      - uses: actions/checkout@v2.4.0
+      - uses: cachix/install-nix-action@v16
         name: Set up Nix and IOHK caches
         with:
           nix_path: nixpkgs=channel:nixos-unstable
           extra_nix_config: |
             trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= iohk.cachix.org-1:DpRUyj7h7V830dp/i6Nti+NEO2/nhblbov/8MW7Rqoo= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
             substituters = https://hydra.iohk.io https://iohk.cachix.org https://cache.nixos.org/
+            experimental-features = nix-command flakes
       - uses: cachix/cachix-action@v10
         with:
           name: mlabs
@@ -76,4 +78,5 @@ jobs:
             dist-newstyle
           key: ${{ runner.os }}-cabal
       - name: Build the project
-        run: nix build .#check.x86_64-linux --extra-experimental-features nix-command --extra-experimental-features flakes
+        run: nix build 
+        run: nix flake check

test/Spec.hs

@@ -5,14 +5,9 @@ import Prelude
 --------------------------------------------------------------------------------
 
 import Test.Tasty (defaultMain, testGroup)
-import Test.Tasty.HUnit (assertBool, testCase)
 
 --------------------------------------------------------------------------------
 
 main :: IO ()
 main =
-  defaultMain $
-    testGroup
-      "Suites"
-      [ testCase "will fail" $ assertBool "false" False
-      ]
+  defaultMain $ testGroup "Suites" []