Re: [Fwd: [Bug 1618698] New: [modularity] drop postgresql-libs - create libpq.spec and libecpg.spec instead]
От | Pavel Raiskup |
---|---|
Тема | Re: [Fwd: [Bug 1618698] New: [modularity] drop postgresql-libs - create libpq.spec and libecpg.spec instead] |
Дата | |
Msg-id | 4157216.yXmPSteUxy@nb.usersys.redhat.com обсуждение исходный текст |
Ответ на | [Fwd: [Bug 1618698] New: [modularity] drop postgresql-libs - createlibpq.spec and libecpg.spec instead] (Devrim Gündüz <devrim@gunduz.org>) |
Список | pgsql-pkg-yum |
On Friday, August 17, 2018 2:20:20 PM CEST Devrim Gündüz wrote: > Comments, please? Since pgrpms are parallel installable, and use completely different package names - that Fedora change should make no noise here. In case something in PGRPMS is built against system-default libpq.so.5, the built packages might get generated slightly different Requires - but it should be for good. I have a playground here, but it's a WIP! https://copr.fedorainfracloud.org/coprs/praiskup/libpq/ https://copr.fedorainfracloud.org/coprs/praiskup/libpq-postgresql-10/ Any comment is welcome here as well :-), thanks for bringing this up! Pavel > -------- Forwarded Message -------- > From: bugzilla@redhat.com > To: devrim@gunduz.org > Subject: [Bug 1618698] New: [modularity] drop postgresql-libs - create > libpq.spec and libecpg.spec instead > Date: Fri, 17 Aug 2018 11:18:09 +0000 > > > https://bugzilla.redhat.com/show_bug.cgi?id=1618698 > > > > Bug ID: 1618698 > > Summary: [modularity] drop postgresql-libs - create libpq.spec > > and libecpg.spec instead > > Product: Fedora > > Version: rawhide > > Component: postgresql > > Keywords: FutureFeature, Tracking > > Assignee: praiskup@redhat.com > > Reporter: praiskup@redhat.com > > QA Contact: extras-qa@fedoraproject.org > > CC: anon.amish@gmail.com, devrim@gunduz.org, > > hhorak@redhat.com, jmlich83@gmail.com, > > jstanek@redhat.com, pkajaba@redhat.com, > > pkubat@redhat.com, praiskup@redhat.com, > > tgl@sss.pgh.pa.us > > > > > > > > Fedora (28+) already provides multiple versions of PostgreSQL packages, the > > default version AND the modular version (even though DB team has not started > > maintaining the modular PG stack, it's done by modularity people - available > > for testing in /etc/yum.repos.d/fedora-modular.repo). > > > > The ongoing plan is to support the modular PostgreSQL server, too, and make > > that server interchangeable with system-default version (note that this is > > not about parallel install-ability/SCL!). > > > > The new layout should be 100% compatible with what we have provided so far, > > so regular user shouldn't really observe big differences. I.e. each Fedora > > version should still (by default) provide/install the latest PostgreSQL > > major server version which was available at the time of Fedora branching > > (from Fedora Rawhide). > > > > So the change is that, in module repository (in module streams), we'll > > provide different versions of set of PostgreSQL server packages > > (postgresql-server, postgresql-contrib, postgresql-pl*, etc., + third party > > modules built against that server). > > > > The major change in 'postgresql.spec' is that we'll drop shared libraries > > from there - the postgresql-libs subpackage. Newly the contents of > > postgresql-libs subpackage will be provided in 'libpq' and 'libecpg' > > packages (with *-devel counterparts). The benefit of this layout is that, > > even though servers will be distributed in multiple versions, the _client_ > > library can be built and maintained only once per system. > > > > We expect to provide older PG stack version usually in modules, but it _is_ > > expected (we at least wish) that we could even start shipping newer version > > of > > PostgreSQL server module in the middle of Fedora stable release. For this > > purpose, we might need to have libpq updated to newer major version (if the > > newly provided server version will require a newer libpq, e.g. because there > > are newer symbols). So to automatically guard against server/client-lib > > mis-installation, we'll start with small downstream change -- with versioned > > ABI of the libpq library. > > > > This approach (single version of libpq and ABI versioning) has been > > discussed upstream and the result is that: > > > > - Debian packagers do something similar (slightly differently because > > they maintain several libpq.so.5 versions in parallel, but only > > the latest required libpq is installed) > > > > - upstream is not ATM very much interested in ABI versioning support > > > > If upstream decided to implement ABI versioning one day, we'd migrate to > > that scheme in the next branched distro version. > > > > [1] > > > https://www.postgresql.org/message-id/5261375.z5KIV9Ssac%40nb.usersys.redhat.com > > > > This bug is meant to serve the tracking purpose. > > > >
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