Revert "Disabled /package/ page. See #299"

This reverts commit 6389b4468f.

src/Handler/PackageList.hs

@@ -1,26 +1,22 @@
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE NoImplicitPrelude #-}
+{-# LANGUAGE TemplateHaskell   #-}
 module Handler.PackageList where
 
 import Import
-import Text.Blaze
+import Stackage.Database
+
 
 -- FIXME maybe just redirect to the LTS or nightly package list
 getPackageListR :: Handler Html
-getPackageListR = do
-    sendResponseStatus status404 =<<
-        defaultLayout
-            (toWidget (preEscapedText
-                 ("Page has been disabled, see: " <>
-                   "<a href=\"https://github.com/fpco/stackage-server/issues/299\">" <>
-                   "github:fpco/stackage-server#299</a>")))
-  --   track "Handler.PackageList.getPackageListR" $
-  --   defaultLayout $ do
-  --       cacheSeconds $ 60 * 60 * 2
-  --       setTitle "Package list"
-  --       packages <- getAllPackages
-  --       $(widgetFile "package-list")
-  -- where
-  --   strip x = fromMaybe x (stripSuffix "." x)
-  --   makePackageLink snapName pli =
-  --       SnapshotR snapName $ StackageSdistR $ PNVNameVersion (pliName pli) (pliVersion pli)
+getPackageListR =
+    track "Handler.PackageList.getPackageListR" $
+    defaultLayout $ do
+        cacheSeconds $ 60 * 60 * 2
+        setTitle "Package list"
+        packages <- getAllPackages
+        $(widgetFile "package-list")
+  where
+    strip x = fromMaybe x (stripSuffix "." x)
+    makePackageLink snapName pli =
+        SnapshotR snapName $ StackageSdistR $ PNVNameVersion (pliName pli) (pliVersion pli)