new: ci workflow, nix-latest

.gitea/workflows/nix.yml

@@ -1,4 +1,4 @@
-name: "Test, build and push caches"
+name: nix-build-publish
 
 on:
   push:
@@ -7,14 +7,9 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: nix-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v26
-        with:
-          nix_path: nixpkgs=channel:nixos-unstable
-          extra_nix_config: |
-            experimental-features = nix-command flakes
       - run: nix flake check --accept-flake-config
       - uses: cachix/cachix-action@v14
         with: