diff --git a/.gitea/workflows/eval.yml b/.gitea/workflows/eval.yml
new file mode 100644
index 0000000..1d11f59
--- /dev/null
+++ b/.gitea/workflows/eval.yml
@@ -0,0 +1,24 @@
+name: "Nix flake eval"
+on:
+  pull_request:
+  push:
+jobs:
+  nix-flake-eval:
+    name: Nix flake eval
+    runs-on: debian-latest
+    steps:
+    - name: Install sudo
+      run: apt-get install --update --assume-yes sudo
+
+    - uses: actions/checkout@v6
+
+    - uses: https://github.com/cachix/install-nix-action@v31
+      with:
+        extra_nix_config: |
+          show-trace = true
+          max-jobs = auto
+          trusted-users = root
+          experimental-features = nix-command flakes
+          build-users-group =
+
+    - run: nix flake check