ci: test hello nix job

.gitea/workflows/hello.yaml

@@ -1,18 +0,0 @@
-name: Gitea Actions Demo
-run-name: ${{ gitea.actor }} testing Gitea Actions 🚀
-on: [push]
-
-jobs:
-  Explore-Gitea-Actions:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository code
-        uses: actions/checkout@v4
-        
-      - name: Say Hello
-        run: |
-          echo "🎉 The job was automatically triggered by a ${{ gitea.event_name }} event."
-          echo "🐧 This job is now running on a ${{ runner.os }} server!"
-          echo "🖥️ Working directory is ${{ gitea.workspace }}"
-          ls -la
-

.gitea/workflows/nix-test.yaml

@@ -0,0 +1,22 @@
+name: Nix Test
+on: [push]
+
+jobs:
+  test-nix:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: https://github.com/nixbuild/nix-quick-install-action@v30
+        with:
+          nix_conf: |
+            sandbox = false
+            experimental-features = nix-command flakes
+
+      - name: Build with Nix
+        run: |
+          nix build .#default
+          ./result/bin/hello
+