[Haskell-cafe] GHC including System.Time but not Data.Time?
jgoerzen at complete.org
Tue Apr 14 12:44:12 EDT 2009
Apologies in advance because this sounds rantish...
So I went to my friendly API reference at
noticed that I couldn't find Data.Time there anymore. Though it was
After some checking on IRC, apparently this is on purpose.
I find it *incredibly* annoying, and leaves us with the following
unfortunate set of circumstances:
1) GHC ships with NO way to do date/time calculations in the preferred
2) GHC's docs reference only the obsolete (System.Time) way of doing
things, with no reference to the preferred way.
3) I can't tell people to just install GHC and expect them to be able
to perform date & time calculations the preferred way. Just about EVERY other
language (C, Perl, Java, Python, etc.) come with this as part of
the base install.
4) I can't update all my apps to use Data.Time without worrying about
Yet Another Dependency.
5) Result: black eye on us.
As I saw on IRC:
<quicksilver> the system isn't supposed to work out the box.
<quicksilver> the haskell platform is supposed to work out of the box.
<quicksilver> (shame it doesn't exist)
Which is a fine goal, but until then, pretty please don't go dropping
Data.Time out of GHC.
I understand the goal of removing stuff from GHC, but the practical
implications can be rather annoying.
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