diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
new file mode 100644
index 000000000..da62ec41c
--- /dev/null
+++ b/.github/workflows/nix.yml
@@ -0,0 +1,10 @@
+name: Nix CI
+
+on: [pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: cachix/install-nix-action@v3
+      - run: nix-build
diff --git a/default.nix b/default.nix
new file mode 100644
index 000000000..1fc6c5c98
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,5 @@
+{ pkgs ? import <nixpkgs> {}
+}:
+pkgs.haskellPackages.developPackage {
+  root = ./.;
+}