* Peter Geoghegan (p...@heroku.com) wrote: > On Thu, Feb 27, 2014 at 6:08 PM, Stephen Frost <sfr...@snowman.net> wrote: > > Extensions can't depend on other extensions directly- hence you can't > > write an extension that depends on hstore, which sucks. It'd be > > preferrable to not have that issue w/ json/jsonb/whatever. > > I think it depends of what you mean by "depend". The earthdistance > extension "requires" 'cube', for example, "a data type cube for > representing multidimensional cubes". Although I am aware of the > lengths that drivers like psycopg2 go to to support hstore because > it's an extension, which is undesirable.
What earthdistance does is simply use the 'cube' data type- that's quite
different from needing to be able to make calls from one .so into the
other .so directly. With earthdistance/cube, everything goes through
PG.
Thanks,
Stephen
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