stackage-setup prerelease download page #87

Handler/Download.hs

@@ -12,6 +12,7 @@ executableFor Win32 = StackageWindowsExecutable
 executableFor Win64 = StackageWindowsExecutable
 executableFor _ = StackageUnixExecutable
 
+-- TODO: link to s3
 executableLink :: SupportedArch -> StackageExecutable -> Route App
 executableLink arch exe =
     StaticR $ StaticRoute ["setup", toPathPiece arch, toPathPiece exe] []
@@ -21,6 +22,10 @@ downloadCandidates =
     map (\arch -> (arch, executableFor arch))
         [minBound .. maxBound]
 
+currentlySupported :: SupportedArch -> Bool
+currentlySupported Linux64 = True
+currentlySupported _ = False
+
 getDownloadR :: Handler Html
 getDownloadR = defaultLayout $ do
     $(widgetFile "download")

templates/download.hamlet

@@ -1,5 +1,21 @@
+<h1>Warning: pre-release
+
+<p>The following executable is considered experimental.
+<p>More operating systems and architectures will be supported upon official release.
+
+<h1>Download
 $forall (arch, exe) <- downloadCandidates
   <ul .downloads>
-    <li>
+    $if currentlySupported arch
-      <a href=@{executableLink arch exe}>
+      <li>
-        #{toPathPiece arch}: #{toPathPiece exe}
+        #{toPathPiece arch}:
+        <a href=@{executableLink arch exe}>
+          #{toPathPiece exe}
+
+<h1>What is stackage-setup?
+
+<p>The stackage-setup executable is an easy way to download and set up the basic executables needed for developing Haskell.
+<p>You can find these executables in:
+<code>~/.stackage/environment/$group/$group-$version/bin/
+<p>For example, ghc, ghc-pkg, haddock, etc for ghc-7.8.4 are installed here:
+<code>~/.stackage/environment/ghc/ghc-7.8.4/bin/