Back to app/src, since it seems they're the default convention for stack

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diff --git a/src/Xmobar/Plugins/Monitors/CoreTemp.hs b/src/Xmobar/Plugins/Monitors/CoreTemp.hs
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+++ b/src/Xmobar/Plugins/Monitors/CoreTemp.hs
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+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Plugins.Monitors.CoreTemp
+-- Copyright   :  (c) Juraj Hercek
+-- License     :  BSD-style (see LICENSE)
+--
+-- Maintainer  :  Juraj Hercek <juhe_haskell@hck.sk>
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- A core temperature monitor for Xmobar
+--
+-----------------------------------------------------------------------------
+
+module Xmobar.Plugins.Monitors.CoreTemp where
+
+import Xmobar.Plugins.Monitors.Common
+import Xmobar.Plugins.Monitors.CoreCommon
+
+
+import Data.Char (isDigit)
+
+-- |
+-- Core temperature default configuration. Default template contains only one
+-- core temperature, user should specify custom template in order to get more
+-- core frequencies.
+coreTempConfig :: IO MConfig
+coreTempConfig = mkMConfig
+       "Temp: <core0>C" -- template
+       (map ((++) "core" . show) [0 :: Int ..]) -- available
+                                                -- replacements
+
+-- |
+-- Function retrieves monitor string holding the core temperature
+-- (or temperatures)
+runCoreTemp :: [String] -> Monitor String
+runCoreTemp _ = do
+   dn <- getConfigValue decDigits
+   failureMessage <- getConfigValue naString
+   let path = ["/sys/bus/platform/devices/coretemp.", "/temp", "_input"]
+       path' = ["/sys/bus/platform/devices/coretemp.", "/hwmon/hwmon", "/temp", "_input"]
+       lbl  = Just ("_label", read . dropWhile (not . isDigit))
+       divisor = 1e3 :: Double
+       show' = showDigits (max 0 dn)
+   checkedDataRetrieval failureMessage [path, path'] lbl (/divisor) show'