diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 1bed45d..5c70f3e 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -10,35 +10,49 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-go@v4
+      - uses: cachix/install-nix-action@v20
+      - uses: cachix/cachix-action@v12
         with:
-          go-version: "1.20"
+          name: devenv
+      - name: Install devenv.sh
+        run: nix profile install github:cachix/devenv/latest
+        shell: sh
+      - run: devenv ci
+      - run: devenv shell task lint
 
-      - name: Run golangci-lint
-        uses: golangci/golangci-lint-action@v3.5.0
+  check:
+    name: Check file format
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: cachix/install-nix-action@v20
+      - uses: cachix/cachix-action@v12
+        with:
+          name: devenv
+      - name: Install devenv.sh
+        run: nix profile install github:cachix/devenv/latest
+        shell: sh
+      - run: devenv ci
+      - run: devenv shell task fmt:check
+      - run: devenv shell task go-imports
 
   tests:
     name: Run tests
     strategy:
       matrix:
-        go-version: [1.16.x]
         os: [macos-latest, ubuntu-latest]
-    runs-on: ${{ matrix.os }}
+    runs-on: "${{ matrix.os }}"
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-go@v4
+      - uses: cachix/install-nix-action@v20
+      - uses: cachix/cachix-action@v12
         with:
-          go-version: "1.20"
-      - name: Install Taskfile
-        uses: arduino/setup-task@v1
-        with:
-          version: '3.x'
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: run tests
-        run: "task tests:coverage"
-
+          name: devenv
+      - name: Install devenv.sh
+        run: nix profile install github:cachix/devenv/latest
+        shell: sh
+      - run: devenv ci
+      - run: devenv shell task tests:coverage
       - uses: codecov/codecov-action@v2
         with:
           verbose: true
-
diff --git a/Taskfile.yml b/Taskfile.yml
index 1a2a066..b985654 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -47,6 +47,7 @@ tasks:
     cmds:
       - task: deps
       - task: go-imports
+      - task: fmt:check
       - task: lint
       - task: tests
 
@@ -69,6 +70,16 @@ tasks:
     cmds:
       - goimports -w -local {{.PACKAGE}} *.go cmd internal plugins test
 
+  fmt:
+    desc: Format go code
+    cmds:
+      - go fmt ./...
+
+  fmt:check:
+    desc: Check that all go files are properly formatted
+    cmds:
+      - test -z $(gofmt -l .)
+
   lint:
     desc: Lint go code
     cmds: