dev: rebase on a less personalized neovim flake

.github/workflows/check.yml

@@ -0,0 +1,17 @@
+name: "Pull request"
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+jobs:
+  nix-flake-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: cachix/install-nix-action@v18
+        with:
+          extra_nix_config: |
+            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
+      - run: nix flake check