Revert "add build cache action"

This reverts commit d53981c94b.

.github/workflows/flake-update.yml

@@ -5,25 +5,68 @@ on:
   schedule:
     - cron: "00 12 * * *"
 jobs:
+  createPullRequest:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      # - name: Login to Docker Hub
+        # uses: docker/login-action@v3
+        # with:
+        #   username: ${{ secrets.DOCKERHUB_USERNAME }}
+        #   password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Install Nix
+        uses: cachix/install-nix-action@v24
+        with:
+          extra_nix_config: |
+            experimental-features = nix-command flakes auto-allocate-uids configurable-impure-env
+      - name: Calculate pre-drv
+        run: nix run git+https://nayeonie.com/ahuston-0/flake-update-diff -- --build .
+      # - name: Pull latest docker images
+      #   run: nix ./utils/fetch-docker.sh
+      - name: Update flake.lock (part 1)
+        run: nix flake update
+      - name: Calculate post-drv
+        run: nix run git+https://nayeonie.com/ahuston-0/flake-update-diff --  --build .
+      # - name: Calculate diff
+      #   run: nix ./utils/diff-evals.sh
+      # - name: Read diff into environment
+      #   run: |
+      #     delimiter="$(openssl rand -hex 8)"
+      #     {
+      #     echo "POSTDIFF<<${delimiter}"
+      #     cat post-diff
+      #     echo "${delimiter}"
+      #     } >> $GITHUB_ENV
+
+
+      # - name: Restore flake.lock for next step
+      #   run: git restore flake.lock
+      # - name: Update flake.lock
+      #   id: update
+      #   uses: DeterminateSystems/update-flake-lock@main
+      #   with:
+      #     token: ${{ secrets.GH_TOKEN_FOR_UPDATES }}
+      #     pr-body: |
+      #       Automated changes by the [update-flake-lock](https://github.com/DeterminateSystems/update-flake-lock) GitHub Action.
+
+      #       ```
+      #       {{ env.GIT_COMMIT_MESSAGE }}
+      #       ```
+
+      #       ```
+      #       {{ env.POSTDIFF }}
+      #       ```
+      #     pr-labels: |                  # Labels to be set on the PR
+      #       dependencies
+      #       automated
   update_lockfile:
     runs-on: ubuntu-latest
     if: github.ref == 'refs/heads/main' # ensure workflow_dispatch only runs on main
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-
       - name: Install nix
         uses: https://github.com/DeterminateSystems/nix-installer-action@main
-
-      - name: Restore Nix store
-        id: restore
-        uses: nix-community/cache-nix-action@v6
-        with:
-          # save a new cache every time `ci.yaml` changes
-          primary-key: similar-cache-${{ matrix.os }}-individual-${{ hashFiles('flake.lock', '*.nix') }}
-          # otherwise, restore a common cache if and only if it matches the current `ci.yaml`
-          restore-prefixes-first-match: similar-cache-${{ matrix.os }}-common-
-
       - name: Setup Attic cache
         uses: ryanccn/attic-action@v0
         with:
@@ -31,10 +74,8 @@ jobs:
           cache: ${{ secrets.ATTIC_CACHE }}
           token: ${{ secrets.ATTIC_TOKEN }}
           skip-push: "true"
-
       - name: Get pre-snapshot of evaluations
         run: nix ./utils/eval-to-drv.sh pre
-
       - name: Update flake.lock
         id: update
         run: |
@@ -49,13 +90,10 @@ jobs:
           echo "EOF" >> $GITHUB_ENV
 
           rm update.log
-
       - name: Get post-snapshot of evaluations
         run: nix ./utils/eval-to-drv.sh post
-
       - name: Calculate diff
         run: nix ./utils/diff-evals.sh
-
       - name: Read diff into environment
         run: |
           delimiter="$(openssl rand -hex 8)"
@@ -64,7 +102,6 @@ jobs:
           cat post-diff
           echo "${delimiter}"
           } >> $GITHUB_ENV
-
       - name: Write PR body template
         uses: https://github.com/DamianReeves/write-file-action@v1.3
         with:
@@ -91,7 +128,6 @@ jobs:
         with:
           files: "pr_body.template"
           output-filename: "pr_body.md"
-
       - name: Save PR body
         id: pr_body
         uses: juliangruber/read-file-action@v1
@@ -125,25 +161,9 @@ jobs:
           pr-labels: |                  # Labels to be set on the PR
             dependencies
             automated
-
       - name: Push to Attic
         run: nix ./utils/attic-push.bash
         continue-on-error: true
-
-      - name: Save Nix store
-        uses: nix-community/cache-nix-action@v6
-        with:
-          # save a new cache every time `ci.yaml` changes
-          primary-key: similar-cache-${{ matrix.os }}-individual-${{ hashFiles('flake.lock', '*.nix') }}
-          # do purge caches
-          purge: true
-          # purge all versions of the individual cache
-          purge-prefixes: similar-cache-${{ matrix.os }}-individual-
-          # created more than 0 seconds ago relative to the start of the `Post Restore` phase
-          purge-created: 0
-          # except the version with the `primary-key`, if it exists
-          purge-primary-key: never
-
       - name: Print PR number
         run: |
           echo "Pull request number is ${{ steps.create-pull-request.outputs.pull-request-number }}."