feat: flake in ci

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  self-care:
+    name: Flake self-check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check Nix flake inputs
+        uses: DeterminateSystems/flake-checker-action@v7
+        with:
+          fail-mode: true
+
+  pre-commit-checks:
+    name: "Pre-commit checks: cargo fmt, typos"
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v11
+      - name: Nix Cache
+        uses: DeterminateSystems/magic-nix-cache-action@v6
+      - name: Rust Cache
+        uses: Swatinem/rust-cache@v2
+      - name: Pre-commit checks
+        run: nix develop -i -L --command just check