Update CI Workflow with Checks (#14)

* feat(ci): add check job and update build dependencies in flake workflow

- Introduce a new `check` job with a strategy matrix for `macos-latest` and `ubuntu-latest`.
- Adjust `build` job to depend on the successful completion of the `check` job.
- Standardize the use of `authtoken` across cachix actions.
- Remove `enable_kvm` option and redundant `nix develop -c just check` step from the `build` job.

* fix: update cachix action parameters to use correct casing and environment variables names

.github/workflows/flake.yaml

@@ -10,7 +10,27 @@ env:
   CACHIX_BINARY_CACHE: altf4llc-os
 
 jobs:
+  check:
+    strategy:
+      matrix:
+        os:
+          - macos-latest
+          - ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: cachix/install-nix-action@v26
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      - uses: cachix/cachix-action@v14
+        with:
+          authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}
+          name: ${{ env.CACHIX_BINARY_CACHE }}
+      - uses: actions/checkout@v4
+      - run: nix develop -c just check
+
   build:
+    needs:
+      - check
     strategy:
       matrix:
         os:
@@ -23,12 +43,10 @@ jobs:
     steps:
       - uses: cachix/install-nix-action@v26
         with:
-          enable_kvm: true
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@v14
         with:
           authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}
           name: ${{ env.CACHIX_BINARY_CACHE }}
       - uses: actions/checkout@v4
-      - run: nix develop -c just check
       - run: nix develop -c just build "${{ matrix.profile }}"