web: fix stack ghci duplicate main error

hledger-web/Hledger/Web/Main.hs

@@ -35,8 +35,8 @@ import Hledger.Cli hiding (progname,prognameandversion)
 import Hledger.Web.WebOptions
 
 
-main :: IO ()
-main = do
+hledgerWebMain :: IO ()
+hledgerWebMain = do
   opts <- getHledgerWebOpts
   when (debug_ (cliopts_ opts) > 0) $ printf "%s\n" prognameandversion >> printf "opts: %s\n" (show opts)
   runWith opts

hledger-web/app/main.hs

@@ -1,9 +1,9 @@
 import Prelude              (IO)
 
-import qualified Hledger.Web.Main
+import Hledger.Web.Main
 
 main :: IO ()
-main = Hledger.Web.Main.main
+main = hledgerWebMain
 
 -- more standard yesod main, for reloading experiments