[sugar] specifying what services Activities may use

[Mikus Grinbergs]

There was an earlier discussion of how to provide the right build 
level for users out in the field, since now Builds can be installed 
separately from Activities -- leading to the possibility that for 
someone an Activity_version on his XO will find itself *mismatched* 
with the Build_version on his XO.


The problem is bigger than that.

Since Joyride 2210, I have seen three of the Activities I often show 
off get broken by the *removal* of services from the Joyride builds. 
If the current software distribution process has trouble matching 
existing Activities to the services_provided_by_a_Build -- how will 
NOT YET EXISTING Activities be accommodated by the software that 
Sugar is supposed to run on top of ???

I'm thinking of someone in a far-off land who has an idea for a 
"killer" Activity, to be run under Sugar.  HOW does he learn which 
(library, or kernel, or whatever) services will be available 
*everywhere* Sugar can be installed, which services will be 
available only with *specific* builds/platforms, and which services 
would *never* be available for functions fitted into Sugar ?


mikus