[Evolution-hackers] evolution default timezone

[William Jon McCann <mccannwj pha jhu edu>]

Hi,

The clock applet now uses the GConf key 
/apps/evolution/calendar/display/timezone to set the default timezone on 
sources.

It is a little awkward that programs using libecal will have to know the 
Olson timezone string.  Right now I don't see any way around this since 
the Olson zone is required to get the icaltimezone.  The icaltimezone is 
needed in two places, primarily:

 * to call e_cal_set_default_timezone()
   which is then used to generate instances

 * manually parsing DATE and DATE-TIME properties
   which then uses icaltime_as_timet_with_zone()

It seems much easier to compute the offset from UTC directly from the 
localtime than it is to keep track of the Olson string.

It should be possible to create a utility function to return the 
icaltimezone given the offset from UTC and the DST flag, right?

If we have this then it might be appropriate for sources to default to 
the system timezone instead of UTC.

I guess a better solution would be to get the Olson string from the 
system but there doesn't seem to be a reliable way to do that.

Jon