diff --git a/ext/manifest.json b/ext/manifest.json
index 3867329..b89cf1f 100644
--- a/ext/manifest.json
+++ b/ext/manifest.json
@@ -10,7 +10,11 @@
         "128": "icons/icon128.png"
     },
     "background": {
-        "scripts": ["js/browser-polyfill.min.js", "js/generated/main.js"]
+        "scripts": [
+            "js/browser-polyfill.min.js",
+            "js/generated/out/cljs_base.js",
+            "js/generated/background.js"
+        ]
     },
     "browser_action": {
         "default_icon": "icons/icon48.png",
diff --git a/project.clj b/project.clj
index d008910..0363001 100644
--- a/project.clj
+++ b/project.clj
@@ -12,6 +12,11 @@
   :cljsbuild {:builds [{:source-paths ["src"]
                         :compiler {:optimizations :simple
                                    :pretty-print true
-                                   :output-to "ext/js/generated/main.js"
-                                   :source-map "ext/js/generated/main.js.map"
-                                   :output-dir "ext/js/generated/out"}}]})
+                                   :source-map true
+                                   :output-dir "ext/js/generated/out"
+                                   :modules {:background
+                                             {:output-to "ext/js/generated/background.js"
+                                              :entries #{"looped-in.background"}}
+                                             :popup
+                                             {:output-to "ext/js/generated/popup.js"
+                                              :entries #{"looped-in.popup"}}}}}]})
diff --git a/src/looped_in/main.cljs b/src/looped_in/background.cljs
similarity index 94%
rename from src/looped_in/main.cljs
rename to src/looped_in/background.cljs
index c636f0b..d373021 100644
--- a/src/looped_in/main.cljs
+++ b/src/looped_in/background.cljs
@@ -1,4 +1,4 @@
-(ns looped-in.main
+(ns looped-in.background
   (:require [clojure.core.match :refer [match]]
             [cljs.core.async :refer [go go-loop chan close! >! <!]]
             [ajax.core :refer [GET]]
@@ -103,5 +103,7 @@
 ;; 2. Fetch HN hits
 ;; 3. Filter and sort hits
 ;; 4. Count comments, update badge
-;; 5. Fetch item details
-;; 6. Construct popup (or sidebar?) html
+;; 5. When the popup is opened:
+;; 6. Fetch items based on the id (this will have to come
+;; from the background script to avoid repeating the request)
+;; 7. Render the popup
diff --git a/src/looped_in/popup.cljs b/src/looped_in/popup.cljs
new file mode 100644
index 0000000..0c54bdd
--- /dev/null
+++ b/src/looped_in/popup.cljs
@@ -0,0 +1,4 @@
+(ns looped-in.popup
+  (:require [looped-in.logging :as log]))
+
+(log/info "Hello from the popup script!")