feat(ci): test blacksmith stickydisk for eval

Author: jfroche

.github/workflows/nix-eval.yml

@@ -24,6 +24,18 @@ jobs:
     steps:
       - name: Checkout Repo
         uses: actions/checkout@v4
+      - name: Create Nix Directories
+        run: |
+          sudo mkdir -p /nix/store
+          sudo chmod -R 777 /nix
+      - name: Mount Nix Store
+        uses: useblacksmith/stickydisk@v1
+        with:
+          key: ${{ github.repository }}-nix-cache-eval-${{ runner.os }}
+          path: /nix
+      - name: Prevent chown in nix installation script
+        run: |
+          echo -e '#!/bin/sh\nexit 0' | sudo tee /usr/chown > /dev/null
       - name: Install nix
         uses: ./.github/actions/nix-install-ephemeral
         with:
@@ -36,3 +48,8 @@ jobs:
         run: |
           set -Eeu -o pipefail
           nix run --accept-flake-config .\#github-matrix -- checks legacyPackages
+
+          sudo systemctl stop nix-daemon.socket || true
+          sudo systemctl stop nix-daemon.service || true
+          sudo pkill -9 nix-daemon || true
+          sleep 2