update and rework project

Author: mrnossiom

.github/workflows/nix.yml

@@ -8,8 +8,8 @@ jobs:
     name: Check flake and upload build cache
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v22
+      - uses: actions/checkout@v5
+      - uses: cachix/install-nix-action@v31
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
 

.github/workflows/rust.yml

@@ -6,7 +6,7 @@ jobs:
     name: Check and test Rust code
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: rustfmt, clippy