Re: R 3.0.0 and required rebuilds of all reverse Depends: of R
On Monday, April 01, 2013 09:54:51 AM Don Armstrong wrote:
> On Sun, 31 Mar 2013, Dirk Eddelbuettel wrote:
> > It really does not add much as well already have a, say, Dependds:
> > r-base-core (>= 3.0.0~20130327) so we are really just trading one
> > for the other as far as I can tell.
>
> The difference is that you can do the following:
>
> r-base-core Provides: r-base-api-3
>
> and all cran depends on r-base-api-3.
>
> When the API changes incompatibly, and an entire rebuild is required,
> you change the api, so that r-base-core now Provides r-base-api-4.
>
> Now, all cran packages have to be upgraded in lockstep with R, and you
> cannot have R packages installed which are incompatible with the R
> interpreter.
>
> The version number attached to the API only increments when the API
> changes incompatibly. If the API changes in a complex way, you could
> also conceivably provide multiple versions of the API in the base
> package.
In sip4 with dh_sip (and sh_sip3 for python3) we do the latter and it seems to
work pretty well.
Scott K
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