Improve documentation

lib/GHCup/Version.hs

@@ -1,6 +1,15 @@
 {-# LANGUAGE QuasiQuotes       #-}
 
 
+{-|
+Module      : GHCup.Version
+Description : Static version information
+Copyright   : (c) Julian Ospald, 2020
+License     : GPL-3
+Maintainer  : hasufell@hasufell.de
+Stability   : experimental
+Portability : POSIX
+-}
 module GHCup.Version where
 
 import           GHCup.Utils.Version.QQ
@@ -15,8 +24,10 @@ import qualified Data.Text                     as T
 ghcupURL :: URI
 ghcupURL = [uri|https://www.haskell.org/ghcup/data/ghcup-0.0.2.json|]
 
+-- | The curren ghcup version.
 ghcUpVer :: PVP
 ghcUpVer = [pver|0.1.8|]
 
+-- | ghcup version as numeric string.
 numericVer :: String
 numericVer = T.unpack . prettyPVP $ ghcUpVer