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diff --git a/apps/media/builder.scm b/apps/media/builder.scm
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+;;; Harmonic Flow web site
+
+(define-module (apps media builder)
+  #:use-module (apps aux system)
+  #:use-module (apps base utils)
+  #:use-module (apps media data)
+  #:use-module (apps media templates screenshot)
+  #:use-module (apps media templates screenshots-overview)
+  #:use-module (apps media types)
+  #:use-module (haunt artifact)
+  #:use-module (haunt html)
+  #:use-module (haunt utils)
+  #:use-module (apps aux web)
+  #:use-module (srfi srfi-19)
+  #:export (builder))
+
+
+;;;
+;;; Application builder.
+;;;
+
+(define (builder site posts)
+  "Return the list of web resources that compose the app.
+
+   This procedure is a Haunt builder procedure.
+
+   SITE (<site>)
+     A site object that defines all the properties of the website. See
+     Haunt <site> objects for more information.
+
+   POSTS (list of <post>)
+     A list of post objects that represent articles from the blog. See
+     Haunt <post> objects for more information.
+
+   RETURN (list of <artifact> and <page>)
+     A list of objects that represent the web resources of the
+     application. See Haunt <artifact> and <page> objects for more
+     information."
+  (flatten
+   (list (screenshots-overview-builder)
+         (screenshots-builder)
+         )))
+
+
+;;;
+;;; Helper builders.
+;;;
+
+
+(define (screenshots-builder)
+  "Return a list of Haunt pages representing screenshot pages."
+  (map
+   (lambda (shot)
+     (let ((context
+            (list (cons "screenshot" shot)
+                  (cons "screenshots" screenshots))))
+       (serialized-artifact (path-join "screenshots"
+                             (screenshot-slug shot)
+                             "index.html")
+                  (screenshot-t context)
+                  sxml->html)))
+   screenshots))
+
+
+(define (screenshots-overview-builder)
+  "Return a Haunt page representing the screenshots overview page."
+  (serialized-artifact "screenshots/index.html"
+             (screenshots-overview-t screenshots)
+             sxml->html))
+\ No newline at end of file