Replaced formatwith build command from plutus extra

.github/workflows/integrate.yaml

@@ -14,20 +14,29 @@ on:
       - "flake.lock"
       - "agora.cabal"
 jobs:
-  check-formatting:
+  build:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-
-      - uses: actions/cache@v2.1.4
-        name: Cache stack
+      - uses: cachix/install-nix-action@v13
+        name: Set up nix and IOHK cache
         with:
-          path: ~/.stack
-          key: ${{ runner.os }}-stack-formatting
-          restore-keys: ${{ runner.os }}-stack-
-
-      - run: stack install fourmolu
-        name: "Install fourmolu"
-
-      - run: ./.github/format.sh
-        name: "Run fourmolu"
+          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/
+      - uses: cachix/cachix-action@v10
+        with:
+          name: mlabs
+          authToken: ${{ secrets.CACHIX_KEY }}
+      - name: Cache cabal folder
+        id: cabal
+        uses: actions/cache@v2.1.4
+        with:
+          path: |
+            ~/.cabal/packages
+            ~/.cabal/store
+            dist-newstyle
+          key: ${{ runner.os }}-cabal
+      - name: Build the full ci derivation
+        run: nix build .#check.x86_64-linux --extra-experimental-features nix-command --extra-experimental-features flakes