added stuff

nyx/.forgejo/workflows/fmt.yml

@@ -0,0 +1,15 @@
+name: Flake Check
+
+on: [push]
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: https://code.forgejo.org/actions/checkout@v4
+      - name: Install Nix
+        uses: https://github.com/DeterminateSystems/nix-installer-action@v5
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      - name: Check
+        run: nix fmt -- -c .