[commit: packages/time] format-widths, ghc, improve-leapseconds, master, posix-perf, tasty, wip/travis: instance Show UniversalTime (7b06a35)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/time

On branches: format-widths,ghc,improve-leapseconds,master,posix-perf,tasty,wip/travis
Link       : http://git.haskell.org/packages/time.git/commitdiff/7b06a35f56e85fc2c1d2929fa2e174432d319211

>---------------------------------------------------------------

commit 7b06a35f56e85fc2c1d2929fa2e174432d319211
Author: Ashley Yakeley <ashley at yakeley.org>
Date:   Sat Feb 21 02:34:10 2015 -0800

    instance Show UniversalTime


>---------------------------------------------------------------

7b06a35f56e85fc2c1d2929fa2e174432d319211
 lib/Data/Time/Clock/Scale.hs         | 3 +++
 lib/Data/Time/LocalTime/LocalTime.hs | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/lib/Data/Time/Clock/Scale.hs b/lib/Data/Time/Clock/Scale.hs
index 5838b4d..c511829 100644
--- a/lib/Data/Time/Clock/Scale.hs
+++ b/lib/Data/Time/Clock/Scale.hs
@@ -23,6 +23,9 @@ import Data.Data
 
 -- | The Modified Julian Date is the day with the fraction of the day, measured from UT midnight.
 -- It's used to represent UT1, which is time as measured by the earth's rotation, adjusted for various wobbles.
+--
+-- For the 'Show' instance of 'UniversalTime',
+-- import "Data.Time" or "Data.Time.LocalTime".
 newtype UniversalTime = ModJulianDate {getModJulianDate :: Rational} deriving (Eq,Ord
 #if LANGUAGE_DeriveDataTypeable
 #if LANGUAGE_Rank2Types
diff --git a/lib/Data/Time/LocalTime/LocalTime.hs b/lib/Data/Time/LocalTime/LocalTime.hs
index d653fb5..360a2c6 100644
--- a/lib/Data/Time/LocalTime/LocalTime.hs
+++ b/lib/Data/Time/LocalTime/LocalTime.hs
@@ -70,6 +70,10 @@ ut1ToLocalTime long (ModJulianDate date) = LocalTime (ModifiedJulianDay localMJD
 localTimeToUT1 :: Rational -> LocalTime -> UniversalTime
 localTimeToUT1 long (LocalTime (ModifiedJulianDay localMJD) tod) = ModJulianDate ((fromIntegral localMJD) + (timeOfDayToDayFraction tod) - (long / 360))
 
+-- orphan instance
+instance Show UniversalTime where
+    show t = show (ut1ToLocalTime 0 t)
+
 -- | A local time together with a TimeZone.
 --
 -- For the 'Read' instance of 'ZonedTime',