.github/workflows/build.yml

@@ -0,0 +1,12 @@
+name: build
+on: [pull_request, push]
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: cachix/install-nix-action@v19
+      with:
+        github_access_token: ${{ secrets.GITHUB_TOKEN }}
+    - run: nix build
+    - run: nix flake check

flake.nix

@@ -10,6 +10,8 @@
     flake-utils.lib.simpleFlake {
       inherit self nixpkgs;
       name = "stardust-xr";
+      systems = [ "x86_64-linux" "aarch64-linux" ];
+
       overlay = pkgs: prev:
         let
           toolchain = fenix.packages.${pkgs.system}.minimal.toolchain;