workflow: add new lines

.github/workflows/build-packages.yml

@@ -6,6 +6,7 @@ on:
         description: "package to build"
         required: false
         type: string
+
 env:
   ATTIC_TOKEN: ${{ secrets.ATTIC_TOKEN }}
   NIX_CONFIG: |
@@ -18,6 +19,7 @@ env:
   TERM: ansi
   AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
   AWS_SECRET_ACCESS_KEY: ${{ secrets. AWS_SECRET_ACCESS_KEY }}
+
 jobs:
   build-packages:
     strategy:
@@ -31,9 +33,11 @@ jobs:
           # - macos-latest
           # - macos-13
     runs-on: ${{ matrix.os }}
+
     steps:
       - name: setup binary cache key
         run: echo "${{ secrets.NIX_CACHE_SECRET_KEY }}" >> /home/runner/cache-priv-key.pem
+
       - name: Install Nix
         uses: cachix/install-nix-action@v30
 
@@ -51,15 +55,19 @@ jobs:
         uses: actions/checkout@v4
         with:
           persist-credentials: false
+
       - run: nix build -L ${{ matrix.package }}
+
       - name: cache result
         if: always()
         run: |
           nix copy -j8 \
             --to 's3://nixcache?endpoint=s3.cy7.sh&secret-key=/home/runner/cache-priv-key.pem' \
             $(nix path-info --recursive --derivation "${{ matrix.package }}" |sed 's/\.drv$/.drv^*/')
+
       - name: prepare tarball to upload
         run: nix run github:nixos/nixpkgs#gnutar hcvf result.tar result
+
       - name: upload result
         uses: actions/upload-artifact@v4
         with: