On Thu, 2019-04-04 at 14:05 +0100, Ray Kinsella wrote: > > > Question for Kevin, Luca and others who look at distro-packaging: > > > is > > > it the > > > case that each distro will only ship one version of DPDK, or is > > > it > > > possible > > > that if we have ABI breaks, a distro will provide two copies of > > > DPDK > > > simultaneously, e.g. a 19.11 ABI version and a 20.11 ABI version? > > > > We can ship multiple versions, although it's more work so there > > should > > be a good reason to do it. > > Well you already kind of do right. > You ship 16.11.8 with Debian 9 and then 18.11 with Debian 9 > backports.
Yes indeed - backports has a different policy and is not part of "Debian main" - for example, stability and security support are not guaranteed. Also there is no guarantee of compatibility of co- installability - while you can have the individual libraries from each version at the same time, you can't have both libdpdk-dev packages which are necessary to build an application. So you have to choose and install either libdpdk-dev=16.11 or libdpdk-dev=18.11. It is possible to have multiple versions in the same archive at the same time, and with multiple -dev packages, and that's what I meant when I mentioned it was more work. > > At the moment in Debian and Ubuntu we don't, > > and we tend to ship whatever the latest LTS version is at the > > distro > > freeze milestone - for example Debian 10 which will be released > > soon > > (TM) will have 18.11.0. > > Presumably when 19.11 arrives, it will land in Debian 10 backports > similarly. > > I assume anything that lands in backports is not guaranteed to be ABI > compatible with stable? Yes, there's no guarantee. -- Kind regards, Luca Boccassi
