yesod-auth: use blaze-html 0.5

yesod-auth/Yesod/Auth/GoogleEmail.hs

@@ -1,5 +1,6 @@
 {-# LANGUAGE QuasiQuotes #-}
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE CPP #-}
 -- | Use an email address as an identifier via Google's OpenID login system.
 --
 -- This backend will not use the OpenID identifier at all. It only uses OpenID
@@ -20,7 +21,11 @@ import qualified Web.Authenticate.OpenId as OpenId
 import Yesod.Handler
 import Yesod.Widget (whamlet)
 import Yesod.Request
+#if MIN_VERSION_blaze_html(0, 5, 0)
+import Text.Blaze.Html (toHtml)
+#else
 import Text.Blaze (toHtml)
+#endif
 import Data.Text (Text)
 import qualified Yesod.Auth.Message as Msg
 import qualified Data.Text as T

yesod-auth/Yesod/Auth/OpenId.hs

@@ -1,5 +1,6 @@
 {-# LANGUAGE QuasiQuotes #-}
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE CPP #-}
 module Yesod.Auth.OpenId
     ( authOpenId
     , authOpenIdExtended
@@ -16,7 +17,11 @@ import Yesod.Handler
 import Yesod.Widget (toWidget, whamlet)
 import Yesod.Request
 import Text.Cassius (cassius)
+#if MIN_VERSION_blaze_html(0, 5, 0)
+import Text.Blaze.Html (toHtml)
+#else
 import Text.Blaze (toHtml)
+#endif
 import Data.Text (Text, isPrefixOf)
 import qualified Yesod.Auth.Message as Msg
 import Control.Exception.Lifted (SomeException, try)

yesod-auth/yesod-auth.cabal

@@ -14,6 +14,10 @@ description:     Authentication for Yesod.
 
 flag ghc7
 
+flag blaze_html_0_5
+    description: use blaze-html 0.5 and blaze-markup 0.5
+    default: False
+
 library
     build-depends:   base                    >= 4         && < 5
                    , authenticate            >= 1.2.1     && < 1.3
@@ -25,7 +29,6 @@ library
                    , random                  >= 1.0.0.2  && < 1.1
                    , text                    >= 0.7       && < 0.12
                    , mime-mail               >= 0.3       && < 0.5
-                   , blaze-html              >= 0.4.1.3   && < 0.5
                    , yesod-persistent        >= 1.0       && < 1.1
                    , hamlet                  >= 1.0       && < 1.1
                    , shakespeare-css         >= 1.0       && < 1.1
@@ -42,6 +45,14 @@ library
                    , pwstore-fast            >= 2.2       && < 3
                    , lifted-base             >= 0.1       && < 0.2
 
+    if flag(blaze_html_0_5)
+        build-depends:
+                     blaze-html               >= 0.5     && < 0.6
+                   , blaze-markup             >= 0.5.1   && < 0.6
+    else
+        build-depends:
+                     blaze-html               >= 0.4     && < 0.5
+
     exposed-modules: Yesod.Auth
                      Yesod.Auth.BrowserId
                      Yesod.Auth.Dummy