diff --git a/hs/Setup.hs b/hs/Setup.hs
index 80b4740..e0c5053 100644
--- a/hs/Setup.hs
+++ b/hs/Setup.hs
@@ -6,15 +6,25 @@ import Distribution.Simple.Utils
 import Distribution.PackageDescription
 import Distribution.Simple.LocalBuildInfo
 import System.Process (readProcess)
+import System.Environment (setEnv)
+import System.FilePath (splitPath, isPathSeparator, dropExtension, (</>))
 
 main = defaultMainWithHooks
   simpleUserHooks
-    { hookedPreProcessors = [("erb", runErb)] }
-
-runErb _ _ =
-  PreProcessor
-    { platformIndependent = True
-    , runPreProcessor = mkSimplePreProcessor $ \fin fout verbosity -> do
-      info verbosity $ "erb-processing " ++ fin ++ " to " ++ fout
-      readProcess "erb" [fin] "" >>= writeFile fout
+    { hookedPreProcessors = [("erb", \_ _ -> PreProcessor
+      { platformIndependent = True
+      , runPreProcessor = runErb
+      })]
     }
+
+runErb (din, fin) (dout, fout) verbosity = do
+  let fin' = din </> fin
+      fout' = dout </> fout
+      modName
+        = filter (not . isPathSeparator)
+        $ intercalate "."
+        $ splitPath
+        $ dropExtension fin
+  info verbosity $ "erb-processing " ++ fin' ++ " to " ++ fout'
+  setEnv "ERB_HS_MODULE" modName
+  readProcess "erb" [fin'] "" >>= writeFile fout'
diff --git a/hs/buildjs b/hs/buildjs
new file mode 100755
index 0000000..68e9ebe
--- /dev/null
+++ b/hs/buildjs
@@ -0,0 +1,2 @@
+#!/bin/sh
+cabal configure --ghcjs && node dist/setup/setup.jsexe/all.js build
diff --git a/hs/rb/enums.rb b/hs/rb/enums.rb
index 5401915..5fd0566 100644
--- a/hs/rb/enums.rb
+++ b/hs/rb/enums.rb
@@ -6,21 +6,13 @@ def initialize(nameHs, exprJs = nameHs.upcase)
   attr_reader :nameHs, :exprJs
 end
 
-def erbFileToModule(erb_file)
-  parts = erb_file.split('/')
-  parts.shift until parts[0] == 'lib'
-  parts.shift
-  parts[-1] = parts[-1].match(/\.erb$/) { |md| md.pre_match }
-  parts.join('.')
-end
-
-def makeEnumModule(erb_file, name, tags, exprPrefix = '')
+def makeEnumModule(name, tags, exprPrefix = '')
   tags = tags.map do |t|
     t.is_a?(String) ? Tag.new(t) : t
   end
   lines = []
 
-  lines << "module #{erbFileToModule(erb_file)} where"
+  lines << "module #{ENV['ERB_HS_MODULE']} where"
 
   lines << "import GHCJS.Types"
   lines << "import GHCJS.Marshal"
diff --git a/hs/rb/records.rb b/hs/rb/records.rb
index a1689cc..f8df415 100644
--- a/hs/rb/records.rb
+++ b/hs/rb/records.rb
@@ -7,21 +7,13 @@ def initialize(type, nameHs, nameJs = nameHs)
   attr_reader :type, :nameHs, :nameJs
 end
 
-def erbFileToModule(erb_file)
-  parts = erb_file.split('/')
-  parts.shift until parts[0] == 'lib'
-  parts.shift
-  parts[-1] = parts[-1].match(/\.erb$/) { |md| md.pre_match }
-  parts.join('.')
-end
-
-def makeRecordModule(erb_file, imports, name, fields)
+def makeRecordModule(imports, name, fields)
   fieldDefs = fields.map do |field|
     "#{field.nameHs} :: #{field.type}"
   end
   lines = []
 
-  lines << "module #{erbFileToModule(erb_file)} where"
+  lines << "module #{ENV['ERB_HS_MODULE']} where"
 
   lines << "import GHCJS.Foreign"
   lines << "import GHCJS.Marshal"
diff --git a/hs/src/lib/System/Cordova/Camera/CameraOptions.erb b/hs/src/lib/System/Cordova/Camera/CameraOptions.erb
index f4398d6..7a96c3b 100644
--- a/hs/src/lib/System/Cordova/Camera/CameraOptions.erb
+++ b/hs/src/lib/System/Cordova/Camera/CameraOptions.erb
@@ -1,7 +1,7 @@
 <%
 require File.expand_path(File.dirname(__FILE__) + '/../../../../../rb/records.rb')
 %>
-<%= makeRecordModule(__FILE__, [
+<%= makeRecordModule([
   'import System.Cordova.Camera.DestinationType',
   'import System.Cordova.Camera.SourceType',
   'import System.Cordova.Camera.EncodingType',
diff --git a/hs/src/lib/System/Cordova/Camera/DestinationType.erb b/hs/src/lib/System/Cordova/Camera/DestinationType.erb
index 2dcc061..0214eec 100644
--- a/hs/src/lib/System/Cordova/Camera/DestinationType.erb
+++ b/hs/src/lib/System/Cordova/Camera/DestinationType.erb
@@ -1,7 +1,7 @@
 <%
 require File.expand_path(File.dirname(__FILE__) + '/../../../../../rb/enums.rb')
 %>
-<%= makeEnumModule(__FILE__, 'DestinationType', [
+<%= makeEnumModule('DestinationType', [
   Tag.new('DataURL', 'DATA_URL'),
   Tag.new('FileURI', 'FILE_URI'),
   Tag.new('NativeURI', 'NATIVE_URI'),
diff --git a/hs/src/lib/System/Cordova/Camera/Direction.erb b/hs/src/lib/System/Cordova/Camera/Direction.erb
index 4599670..57b444f 100644
--- a/hs/src/lib/System/Cordova/Camera/Direction.erb
+++ b/hs/src/lib/System/Cordova/Camera/Direction.erb
@@ -1,7 +1,7 @@
 <%
 require File.expand_path(File.dirname(__FILE__) + '/../../../../../rb/enums.rb')
 %>
-<%= makeEnumModule(__FILE__, 'Direction', %w{
+<%= makeEnumModule('Direction', %w{
   Back
   Front
 }, 'Camera.Direction.') %>
diff --git a/hs/src/lib/System/Cordova/Camera/EncodingType.erb b/hs/src/lib/System/Cordova/Camera/EncodingType.erb
index 983ddde..039fd59 100644
--- a/hs/src/lib/System/Cordova/Camera/EncodingType.erb
+++ b/hs/src/lib/System/Cordova/Camera/EncodingType.erb
@@ -1,7 +1,7 @@
 <%
 require File.expand_path(File.dirname(__FILE__) + '/../../../../../rb/enums.rb')
 %>
-<%= makeEnumModule(__FILE__, 'EncodingType', %w{
+<%= makeEnumModule('EncodingType', %w{
   JPEG
   PNG
 }, 'Camera.EncodingType.') %>
diff --git a/hs/src/lib/System/Cordova/Camera/MediaType.erb b/hs/src/lib/System/Cordova/Camera/MediaType.erb
index 37cbbf8..3b7ed37 100644
--- a/hs/src/lib/System/Cordova/Camera/MediaType.erb
+++ b/hs/src/lib/System/Cordova/Camera/MediaType.erb
@@ -1,7 +1,7 @@
 <%
 require File.expand_path(File.dirname(__FILE__) + '/../../../../../rb/enums.rb')
 %>
-<%= makeEnumModule(__FILE__, 'MediaType', %w{
+<%= makeEnumModule('MediaType', %w{
   Picture
   Video
   AllMedia
diff --git a/hs/src/lib/System/Cordova/Camera/PopoverArrowDirection.erb b/hs/src/lib/System/Cordova/Camera/PopoverArrowDirection.erb
index 41fb669..93be672 100644
--- a/hs/src/lib/System/Cordova/Camera/PopoverArrowDirection.erb
+++ b/hs/src/lib/System/Cordova/Camera/PopoverArrowDirection.erb
@@ -1,7 +1,7 @@
 <%
 require File.expand_path(File.dirname(__FILE__) + '/../../../../../rb/enums.rb')
 %>
-<%= makeEnumModule(__FILE__, 'PopoverArrowDirection', [
+<%= makeEnumModule('PopoverArrowDirection', [
   Tag.new('ArrowUp', 'ARROW_UP'),
   Tag.new('ArrowDown', 'ARROW_DOWN'),
   Tag.new('ArrowLeft', 'ARROW_LEFT'),
diff --git a/hs/src/lib/System/Cordova/Camera/PopoverOptions.erb b/hs/src/lib/System/Cordova/Camera/PopoverOptions.erb
index 1ab9b6e..69d2978 100644
--- a/hs/src/lib/System/Cordova/Camera/PopoverOptions.erb
+++ b/hs/src/lib/System/Cordova/Camera/PopoverOptions.erb
@@ -1,7 +1,7 @@
 <%
 require File.expand_path(File.dirname(__FILE__) + '/../../../../../rb/records.rb')
 %>
-<%= makeRecordModule(__FILE__, [], 'PopoverOptions', [
+<%= makeRecordModule([], 'PopoverOptions', [
   Field.new('Maybe Int', 'popX', 'x'),
   Field.new('Maybe Int', 'popY', 'y'),
   Field.new('Maybe Int', 'popWidth', 'width'),
diff --git a/hs/src/lib/System/Cordova/Camera/SourceType.erb b/hs/src/lib/System/Cordova/Camera/SourceType.erb
index 2277bd2..1c83d76 100644
--- a/hs/src/lib/System/Cordova/Camera/SourceType.erb
+++ b/hs/src/lib/System/Cordova/Camera/SourceType.erb
@@ -1,7 +1,7 @@
 <%
 require File.expand_path(File.dirname(__FILE__) + '/../../../../../rb/enums.rb')
 %>
-<%= makeEnumModule(__FILE__, 'SourceType', %w{
+<%= makeEnumModule('SourceType', %w{
   PhotoLibrary
   Camera
   SavedPhotoAlbum
diff --git a/hs/src/lib/System/Cordova/FileSystem/FileErrorCode.erb b/hs/src/lib/System/Cordova/FileSystem/FileErrorCode.erb
index d158657..b0e3c3c 100644
--- a/hs/src/lib/System/Cordova/FileSystem/FileErrorCode.erb
+++ b/hs/src/lib/System/Cordova/FileSystem/FileErrorCode.erb
@@ -1,7 +1,7 @@
 <%
 require File.expand_path(File.dirname(__FILE__) + '/../../../../../rb/enums.rb')
 %>
-<%= makeEnumModule(__FILE__, 'FileErrorCode', %w{
+<%= makeEnumModule('FileErrorCode', %w{
   NOT_FOUND_ERR
   SECURITY_ERR
   ABORT_ERR
diff --git a/hs/src/lib/System/Cordova/FileSystem/Storage.erb b/hs/src/lib/System/Cordova/FileSystem/Storage.erb
index b585094..cab204d 100644
--- a/hs/src/lib/System/Cordova/FileSystem/Storage.erb
+++ b/hs/src/lib/System/Cordova/FileSystem/Storage.erb
@@ -1,7 +1,7 @@
 <%
 require File.expand_path(File.dirname(__FILE__) + '/../../../../../rb/enums.rb')
 %>
-<%= makeEnumModule(__FILE__, 'Storage', %w{
+<%= makeEnumModule('Storage', %w{
   Temporary
   Persistent
 }, 'window.') %>
diff --git a/hs/src/lib/System/Cordova/NetworkInformation/Connection.erb b/hs/src/lib/System/Cordova/NetworkInformation/Connection.erb
index 9d31065..8e3837f 100644
--- a/hs/src/lib/System/Cordova/NetworkInformation/Connection.erb
+++ b/hs/src/lib/System/Cordova/NetworkInformation/Connection.erb
@@ -1,7 +1,7 @@
 <%
 require File.expand_path(File.dirname(__FILE__) + '/../../../../../rb/enums.rb')
 %>
-<%= makeEnumModule(__FILE__, 'Connection', [
+<%= makeEnumModule('Connection', [
   'Unknown',
   'Ethernet',
   'Wifi',