On Thu, Jul 23, 2020 at 11:29:17AM +0200, Remi Collet wrote: > Le 09/07/2020 à 20:00, Ben Cotton a écrit : > > https://fedoraproject.org/wiki/Changes/ModularPolicy > > > There is a preview of the new policy available at > > https://sgallagh.fedorapeople.org/docs/modularity/modularity/policies/ > > > I think this part may be confusing > > Packages provided at runtime by the default stream of a module MUST > depend only on packages provided by packages from default module > streams or the non-modular package set. By extension, default streams > of a module MUST NOT have a dependency on any non-default stream.[3] > > I think if should be possible, and modularity have been designed for > such usage, to depend on "all" versions of a dependant stream > > Example, > > LANG as a module with version 1, 2, 3 > > APP using LANG build using each version > > So in metadata > > data > name: APP > dependencies: > - buildrequires: > LANG: [] > - requires > LANG: [] > > And documentation seems to forbid this usage. > I believe that an intention of the documentation is that if APP is a default stream, then exactly one of LANG streams must be default. That assures that when installing a package (non-modular, or from a default stream), no non-default stream becomes enabled.
I agree that the documentation could be understood in the other way, you
pointed, and that is that every package of a default stream _regardless of
a context_ must not depend on a non-default stream.
The documentation could be clarified like this:
Packages provided at runtime by at least one context of a default stream
of a module MUST depend only on packages provided by packages from default
module streams or the non-modular package set. By extension, at least one
context of the default streams of a module MUST NOT have a dependency on
any non-default stream on each platfrom.
But it becomes less comprehensive.
-- Petr
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