flora-6: move forgejo-runner cache directory to /data

[2024-04-22 23:46:26][Info] Skipping /nix/store/w2zp8k8yy2avv5r92w0cpq9aixkir2sp-LocalSettings.php
...

.forgejo/workflows/check.yml

@@ -24,22 +24,37 @@ jobs:
           echo "hash=$(md5sum flake.lock | awk '{print $1}')" >> $GITHUB_OUTPUT
 
       - name: Restore and cache Nix store
-        uses: https://github.com/nix-community/cache-nix-action@v5
+        uses: https://github.com/nix-community/cache-nix-action@v4.0.3
         id: nix-store-cache
         with:
-          primary-key: cache-${{ runner.os }}-nix-store-${{ steps.flake-lock-hash.outputs.hash }}
-          restore-prefixes-first-match: |
+          key: cache-${{ runner.os }}-nix-store-${{ steps.flake-lock-hash.outputs.hash }}
+          restore-keys: |
             cache-${{ runner.os }}-nix-store-
 
           gc-linux: true
           gc-max-store-size-linux: 10000000000
 
+          purge-caches: true
+          purge-key: cache-${{ runner.os }}-nix-store-
+          purge-created: true
+          purge-created-max-age: 42
+
       - name: Prepare cachix
         uses: https://github.com/cachix/cachix-action@v14
         with:
           name: pub-solar
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+          useDaemon: false
 
       - name: Run flake checks
         run: |
           nix --print-build-logs --verbose --accept-flake-config --access-tokens '' flake check
+          # Prevent cache garbage collection
+          for target in $(nix flake show --json --all-systems | jq '
+            .["nixosConfigurations"] |
+            to_entries[] |
+            .key
+            ' | tr -d '"'
+          ); do
+            nix profile install --profile "/nix/var/nix/profiles/$target" ".#nixosConfigurations.${target}.config.system.build.toplevel"
+          done

hosts/flora-6/apps/forgejo-actions-runner.nix

@@ -13,6 +13,9 @@
   # Needed for the docker runner to communicate with the act_runner cache
   networking.firewall.trustedInterfaces = [ "br-+" ];
 
+  systemd.services."gitea-runner-flora\\x2d6".serviceConfig = {
+    CacheDirectory = "/data/gitea-actions-runner";
+  };
   # forgejo actions runner
   # https://forgejo.org/docs/latest/admin/actions/
   # https://docs.gitea.com/usage/actions/quickstart
@@ -23,6 +26,15 @@
       name = config.networking.hostName;
       url = "https://git.pub.solar";
       tokenFile = config.age.secrets.forgejo-actions-runner-token.path;
+      settings = {
+        cache = {
+          enabled = true;
+          dir = "/data/gitea-actions-runner/actcache";
+          host = "";
+          port = 0;
+          external_server = "";
+        };
+      };
       labels = [
         # provide a debian 12 bookworm base with Node.js for actions
         "debian-latest:docker://git.pub.solar/pub-solar/actions-base-image:20-bookworm"