On Mon, May 28, 2018 at 11:05 AM, Fabio Valentini <decatho...@gmail.com> wrote:
> On Mon, May 28, 2018 at 10:58 AM Petr Šabata <con...@redhat.com> wrote: > > > On Sat, May 26, 2018 at 05:00:43PM +0200, Fabio Valentini wrote: > > > On Sat, May 26, 2018 at 3:44 PM Neal Gompa <ngomp...@gmail.com> wrote: > > > > > > > On Sat, May 26, 2018 at 9:35 AM Fabio Valentini < > decatho...@gmail.com> > > > > wrote: > > > > > > > > Hi all, > > > > > > > > I think I finally found a scenario where building some of my (and > > > > others') packages as modules would be beneficial. > > > > > > > > The situation is: > > > > > > > > - The syncthing package has a lot of golang dependencies. > > > > > - Some of them are too old in fedora, even in fedora rawhide, and > some > > > of > > > > them have not been touched in years. > > > > > - However, some other packages may depend on those older versions, > or > > > the > > > > packagers don't have time to check for compatibility. > > > > > > > > The idea for a solution I came up with: > > > > > > > > - Build syncthing as a module. > > > > > - Add "syncthing" branches to all incompatible dependencies (I > guess I > > > > have to request commit/admin access to do that for packages I don't > own > > > > yet?). > > > > > - Update those branches to use the exact same commit as the > vendored > > > > sources in upstream syncthing. > > > > > - Use those modules as dependencies for the syncthing module. > > > > > > > > Is that a valid, feasible use case of modularity? > > > > > > > > > > You can kind of pigeonhole it into that, but I think you might be > better > > > > served by vendoring things you can't use from Fedora packages and > going > > > > from there. > > > > > > > The problem is that you're touching other people's packages and > hoping > > > they > > > > don't make those branches go away. And at the end of it, the output > would > > > > be a single package that lives outside of the normal repo metadata > and > > > only > > > > modularity-enabled clients would be able to install it. > > > > > > > The excludes most of the package managers that people can use in > Fedora > > > > right now. > > > > > > > It might make sense if you could describe which dist-git commit to > use in > > > > the module definition, regardless of what's actually released in the > main > > > > repos, and it would just build from those until you upgrade it. That > would > > > > avoid the need for branches in all the golang packages you need for > > > > syncthing. > > > > > > I don't think that would be the case. > > > An upstream commit that's newer than anything that has ever been > packaged > > > before for a fedora branch is never available, not even if I could > target > > > other dist-git commits. That's why I thought of modularity. > > > I might not be following but: > > > * you can link to any git refs -- branches, tags, or commits > > Yes, Neal also pointed that out to me - but it doesn't help if the required > dependency has to be newer than anything that has ever been packaged for > fedora, does it? > Modules can only include RPM packages — so having an upstream dependency which is not packaged is not gonna work. But if you package it yourself (possibly in a stream branch), you'll be fine. > > > * if you branch the dependencies, it's really up to you to maintain > > those; that also means you can use any versions and patches > > > I think modularity could solve your problem provided that you > > are fine with the syncthing module overriding those dependency > > packages when people enable it. > > Neal's comment on support in package managers is valid. > > This will get better over time but the current state of things > > is also something to consider. > > > P > > _______________________________________________ > > devel mailing list -- devel@lists.fedoraproject.org > > To unsubscribe send an email to devel-le...@lists.fedoraproject.org > > Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html > > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > > List Archives: > https://lists.fedoraproject.org/archives/list/devel@lists. > fedoraproject.org/message/2XSSRRCHAKOFCSHJ5NMVWK2LHFEXOA5W/ > _______________________________________________ > devel mailing list -- devel@lists.fedoraproject.org > To unsubscribe send an email to devel-le...@lists.fedoraproject.org > Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: https://lists.fedoraproject.org/archives/list/devel@lists. > fedoraproject.org/message/Y2RRCYPTCK7WN6ZSC3XOCNX3Z2SA7XF5/ > -- Adam Šamalík --------------------------- Software Engineer Red Hat
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