diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index e95e827..df49e4b 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -3,8 +3,17 @@ on:
   pull_request:
   push:
 jobs:
-  tests:
-    runs-on: [ ubuntu-20.04, macos-11 ]
+  tests-linux:
+    runs-on: ubuntu-20.04
+    steps:
+    - uses: actions/checkout@v2.3.4
+    - uses: cachix/install-nix-action@v15
+      with:
+        extra_nix_config: "system-features = nixos-test benchmark big-parallel kvm"
+    - run: nix build
+    - run: nix flake check
+  tests-darwin:
+    runs-on: macos-11
     steps:
     - uses: actions/checkout@v2.3.4
     - uses: cachix/install-nix-action@v15