caching round 2

.drone.jsonnet

@@ -1,21 +1,15 @@
+local CacheVolume = "cache";
+
 local Cache(name, settings) = {
   name: name,
-  image: "meltwater/drone-cache",
-  pull: true,
-  settings: {
-    backend: "filesystem",
-    cache_key: "{{ .Repo.Name }}",
-    archive_format: "gzip",
-    mount: [
-      "/nix/store"
-    ]
-  } + settings,
-  volumes: [
-    {
-      name: "cache",
-      path: "/tmp/cache"
-    }
-  ]
+  image: "drillster/drone-volume-cache",
+  volumes: [ {
+    name: CacheVolume,
+    path: "/cache"
+  } ],
+  settings: settings + {
+    mount: ["/nix/store"]
+  }
 };
 
 local Pipeline(channel) = {
@@ -30,12 +24,12 @@ local Pipeline(channel) = {
     CACHIX_CACHE: "xeals",
     CACHIX_SIGNING_KEY: { from_secret: "cachix_key" },
   },
-  volumes: [
-    {
-      name: "cache",
-      temp: {}
+  volumes: [ {
+    name: CacheVolume,
+    host: {
+      path: "/tmp/drone/cache"
     }
-  ],
+  } ],
   steps: [
     Cache("restore-nix-store", {
       restore: true