My ghci can’t find the Calendar module even though the time package is installed.
$ ghc-pkg list | grep time
old-time-1.0.0.6
time-1.2.0.3
time-1.4.0.1
I tried to remove the old one but that broke a lot of other packages. How can I resolve the problem?
Assuming your question is phrased correctly: the module is called
Data.Time.Calendarand notDate.Time.Calendar.