On Mon, Aug 09, 2004 at 03:44:30PM +0100, Richard Jones wrote: > On Mon, Aug 09, 2004 at 04:36:34PM +0200, Sven Luther wrote: > > If you have libdbi-ocaml-dev installed, and no driver or only some > > of them, will you still be able to use libdbi-ocaml-dev to develop > > software ? to build mod-caml for example ? > > In the particular instance of mod_caml, there is no actual dependency > between mod_caml and ocamldbi any more. > > mod_caml previously depended on a module called Dbi.Factory which was > part of ocamldbi. However, I removed Dbi.Factory from ocamldbi, and > rewrite mod_caml to use a functor approach. All mod_caml needs is a > module which contains a 'type connection' and various functions like > 'val connect : ... -> connection' and 'val rollback : connection -> > unit'. Modules that look like this happen to be supplied by ocamldbi, > but there is no actual necessary dependency. > > If you have libdbi-ocaml-dev installed, but didn't have any drivers > installed, then the extent of your development work would be quite > limited. You could write programs which linked to dbi.cma, but they > wouldn't do very much of interest. > > As soon as you tried to use one of the drivers in libdbi-ocaml-dev, > eg. if you tried to link your program with dbi_postgres.cmo, then > you'd get an error. You would need to install libpgsql-ocaml-dev to > proceed with the linking. This would be fairly obvious, because the > way to link a PG program anyway is: > > ocamlc -I +pcre -I +postgres -I +dbi \ > pcre.cma postgres.cma dbi.cma dbi_postgres.cmo program.ml > > However, think of the alternative! Which is that we have a > libdbi-ocaml-dev with so many dependencies it needs half of X install > to make it work!
Well, the correct way would be to either reduce the dependencies of libmysql-ocaml[-dev] or even reduce the dependencies of the mysql stuff itself, or split it in a nox package or something. Friendly, Sven Luther -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
