úÎ z  portableUnstable%Michael Snoyman <michael@snoyman.com>"An openid identifier (ie, a URL). 8Returns a URL to forward the user to in order to login. BHandle a redirect from an OpenID provider and check that the user - logged in properly. If it was successfully,  s the openid.  Otherwise,  s an explanation. 6Information received from Rpxnow after a valid login. Attempt to log a user in.       authenticate-0.0.0Web.Authenticate.OpenIdWeb.Authenticate.Rpxnowbase Control.Monad Identifier identifier getForwardUrl authenticate extraDataGHC.Basereturnfail