diff --git a/.github/workflows/build-then-cache.yaml b/.github/workflows/build-then-cache.yaml
index a830e92..b78ad2e 100644
--- a/.github/workflows/build-then-cache.yaml
+++ b/.github/workflows/build-then-cache.yaml
@@ -20,6 +20,20 @@ jobs:
       - run: 'bash ci/util_free_space_extreme.sh'
       # TODO: figure out how to use flake checks and use those to build it
       - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#nixosConfigurations.rpi4.config.system.build.toplevel'
+
+  build_x86-64_packages:
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v4
+      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: DeterminateSystems/flake-checker-action@main
+      - uses: ryanccn/attic-action@v0
+        with:
+          endpoint: ${{ secrets.ATTIC_ENDPOINT }}
+          cache: ${{ secrets.ATTIC_CACHE }}
+          token: ${{ secrets.ATTIC_TOKEN }}
+      - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#redlib'
+
   build_x86-64:
     runs-on: ubuntu-24.04
     steps:
@@ -37,6 +51,3 @@ jobs:
       - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#nixosConfigurations.slab.config.system.build.toplevel'
       - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#nixosConfigurations.nullbox.config.system.build.toplevel'
       - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#nixosConfigurations.nixos-wsl.config.system.build.toplevel'
-
-      # packages
-      - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#redlib'