Two-Stage Smart NVIDIA Cache #283
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| name: "Two-Stage Smart NVIDIA Cache" | |
| on: | |
| schedule: | |
| - cron: '0 */6 * * *' | |
| workflow_dispatch: | |
| permissions: | |
| contents: write | |
| jobs: | |
| check-and-build: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - name: Checkout repository | |
| uses: actions/checkout@v4 | |
| # ------------------------------------------------------------- | |
| # 第一阶段：检查 nixpkgs Commit (API 级别，极速) | |
| # ------------------------------------------------------------- | |
| - name: Check nixpkgs commit | |
| id: nixpkgs_check | |
| run: | | |
| LATEST_REV=$(curl -s -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" https://api.github.com/repos/NixOS/nixpkgs/branches/nixos-unstable | jq -r '.commit.sha') | |
| OLD_REV=$(cat last-built-nixpkgs.txt 2>/dev/null || echo "") | |
| echo "latest_rev=$LATEST_REV" >> $GITHUB_OUTPUT | |
| if [ "$LATEST_REV" = "$OLD_REV" ]; then | |
| echo "changed=false" >> $GITHUB_OUTPUT | |
| echo "nixpkgs 未发现变动，跳过后续所有步骤。" | |
| else | |
| echo "changed=true" >> $GITHUB_OUTPUT | |
| echo "nixpkgs 已更新，进入第二阶段校验。" | |
| fi | |
| # ------------------------------------------------------------- | |
| # 第二阶段：检查内核/驱动 Hash (Nix 级别) | |
| # ------------------------------------------------------------- | |
| - name: Install Nix | |
| if: steps.nixpkgs_check.outputs.changed == 'true' | |
| uses: DeterminateSystems/nix-installer-action@v16 | |
| with: | |
| github-token: ${{ secrets.GITHUB_TOKEN }} | |
| - name: Evaluate Kernel/Driver Hash | |
| if: steps.nixpkgs_check.outputs.changed == 'true' | |
| id: hash_check | |
| run: | | |
| HOSTNAME="xiaomi-notebook" # 【替换】你的机器名 | |
| LATEST_REV="${{ steps.nixpkgs_check.outputs.latest_rev }}" | |
| echo "正在计算新版本的内核与驱动哈希..." | |
| NEW_KERNEL_HASH=$(nix eval --raw .#nixosConfigurations."$HOSTNAME".config.boot.kernelPackages.kernel.outPath --override-input nixpkgs "github:NixOS/nixpkgs/$LATEST_REV" --accept-flake-config) | |
| NEW_NVIDIA_HASH=$(nix eval --raw .#nixosConfigurations."$HOSTNAME".config.boot.kernelPackages.nvidia_x11.outPath --override-input nixpkgs "github:NixOS/nixpkgs/$LATEST_REV" --accept-flake-config) | |
| NEW_COMBINED="$NEW_KERNEL_HASH|$NEW_NVIDIA_HASH" | |
| OLD_COMBINED=$(cat last-hashes.txt 2>/dev/null || echo "") | |
| echo "new_hash=$NEW_COMBINED" >> $GITHUB_OUTPUT | |
| if [ "$NEW_COMBINED" = "$OLD_COMBINED" ]; then | |
| echo "build_needed=false" >> $GITHUB_OUTPUT | |
| echo "虽然 nixpkgs 更新了，但内核和驱动二进制未变，无需编译。" | |
| else | |
| echo "build_needed=true" >> $GITHUB_OUTPUT | |
| echo "内核或驱动版本已变动，需要执行构建。" | |
| fi | |
| # ------------------------------------------------------------- | |
| # 第三阶段：执行构建与上传 | |
| # ------------------------------------------------------------- | |
| - name: Setup Cachix | |
| if: steps.nixpkgs_check.outputs.changed == 'true' && steps.hash_check.outputs.build_needed == 'true' | |
| uses: cachix/cachix-action@v15 | |
| with: | |
| name: rxda-cache # 【替换】你的 Cachix 名字 | |
| authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}' | |
| - name: Build and Push | |
| if: steps.nixpkgs_check.outputs.changed == 'true' && steps.hash_check.outputs.build_needed == 'true' | |
| env: | |
| NIXPKGS_ALLOW_UNFREE: 1 | |
| run: | | |
| HOSTNAME="xiaomi-notebook" | |
| LATEST_REV="${{ steps.nixpkgs_check.outputs.latest_rev }}" | |
| nix build .#nixosConfigurations."$HOSTNAME".config.boot.kernelPackages.kernel \ | |
| .#nixosConfigurations."$HOSTNAME".config.boot.kernelPackages.nvidia_x11 \ | |
| --override-input nixpkgs "github:NixOS/nixpkgs/$LATEST_REV" \ | |
| --accept-flake-config \ | |
| --print-build-logs | |
| # ------------------------------------------------------------- | |
| # 第四阶段：更新记录文件并提交 | |
| # ------------------------------------------------------------- | |
| - name: Update Records | |
| # 只要 nixpkgs 变了，无论是否需要构建，我们都更新记录，防止下次重复校验 | |
| if: steps.nixpkgs_check.outputs.changed == 'true' && success() | |
| run: | | |
| echo "${{ steps.nixpkgs_check.outputs.latest_rev }}" > last-built-nixpkgs.txt | |
| echo "${{ steps.hash_check.outputs.new_hash }}" > last-hashes.txt | |
| - name: Commit and Push | |
| if: steps.nixpkgs_check.outputs.changed == 'true' && success() | |
| uses: stefanzweifel/git-auto-commit-action@v5 | |
| with: | |
| commit_message: "chore: sync nixpkgs to ${{ steps.nixpkgs_check.outputs.latest_rev }} [skip ci]" | |
| file_pattern: 'last-hashes.txt last-built-nixpkgs.txt' |