On Wed, 2018-06-20 at 07:59 -0400, Josh Boyer wrote:
> On Wed, Jun 20, 2018 at 7:52 AM Severin Gehwolf <sgehwolf@xxxxxxxxxx> wrote:
> >
> > Hi,
> >
> > I'm exploring the Fedora Modularity world and would like to know
> > whether it's possible to have two different module streams install two
> > different sets of packages? If that's possible, would installing one
> > stream remove the packages from the other stream even though the set of
> > packages don't overlap? I'm aware that it's not a goal of modularity to
> > support parallel installability. But what if the packages themselves
> > already allow parallel installability?
> >
> > Example:
> >
> > Module name: jdk
> > Streams: 8, 11
> >
> > 1) "dnf module install jdk:8/default" installs these packages:
> >
> > java-1.8.0-openjdk
> > java-1.8.0-openjdk-devel
> > java-1.8.0-openjdk-headless
> >
> > 2) "dnf module install jdk:11/default" installs these packages:
> >
> > java-11-openjdk
> > java-11-openjdk-headless
> > java-11-openjdk-devel
> >
> > After 1) *and* 2) would I have both module streams' packages on my
> > system? Would I have only the set from 2) with 1) removed?
>
> I think you would only have the set from 2.
>
> Parallel installation can't be done via streams, so it must be done at
> the module level. So you'd have jdk8 and jdk11 modules, each with a
> default stream. Given the default is specified, an installation would
> look something like:
>
> "dnf module install jdk8; dnf module install jdk11"
That's interesting, thanks!
FWIW, I've tried the reverse :) I had jdk10 and jdk11 both specifying
packages java-openjdk{,-devel,-headless} and the install of jdk11
*upgraded* packages from the other (jdk10) module.
Cheers,
Severin
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