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Date:      Wed, 16 Jul 2014 09:44:53 +0000
From:      Alexey Dokuchaev <danfe@FreeBSD.org>
To:        Vsevolod Stakhov <vsevolod@FreeBSD.org>
Cc:        svn-ports-head <svn-ports-head@freebsd.org>, "Timur I. Bakeyev" <timur@FreeBSD.org>, Steve Wills <swills@freebsd.org>, svn-ports-all <svn-ports-all@freebsd.org>, marino@freebsd.org, "ports-committers@freebsd.org" <ports-committers@freebsd.org>
Subject:   Re: svn commit: r361646 - in head/net/samba36: . files
Message-ID:  <20140716094453.GA53961@FreeBSD.org>
In-Reply-To: <53C5618F.2020104@FreeBSD.org>
References:  <201407122229.s6CMTN42057554@svn.freebsd.org> <CALdFvJGQq=PNpAqBBEZXi-q0GT=Ro-fRSjGcHFR1R01=FBtQOQ@mail.gmail.com> <53C322A7.2090705@marino.st> <20140714003112.GA54756@mouf.net> <CALdFvJEvf4-RSJNUVxX08T8K-tq9PoKge-XxmhDafAn_QxjEcg@mail.gmail.com> <53C451FA.2020304@marino.st> <20140715170501.GA73101@FreeBSD.org> <53C5618F.2020104@FreeBSD.org>

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On Tue, Jul 15, 2014 at 06:14:55PM +0100, Vsevolod Stakhov wrote:
> Let me explain the situation with pkg. Pkg needs to find so called
> ``upgrade chains'' that are used to upgrade packages. To find out
> packages that are suitable for upgrade we use origins in pkg 1.2 and
> name~origin in pkg 1.3.
> 
> However, each package is identified by a special field called
> `manifestdigest'. In pkg 1.2, this field is just sha256(manifest).
> Unfortunately, this means that if *any* field of a package is changed a
> version bump is required. By fields I mean files and directories as well
> which leads thus to a policy where we need to bump a revision even if we
> have meaningless changes in the files a package provides (that happens
> after this particular change).
> 
> With pkg 1.3 this behaviour has been changed to recognize the following
> fields only:
> 
> *  name
> *  origin
> *  version
> *  arch
> *  maintainer
> *  www
> *  message
> *  comment
> *  options
> 
> Hence, I think that with the release 1.3 of pkg we should define
> revision bump policy to reflect this change.

I do not find this design good enough.  I don't use pkg, I like to build
things.  I'm happy with pkgng for keeping track of what I have installed,
but still prefer to build stuff from ports the old way.

Now perhaps my gear is not as fast as yours; it takes about two hours to
build heavy ports like gcc47 or Boost on PowerPC 7447A (1250.35 MHz), and
even on much faster Pentium M 780 (2.26GHz) building e.g. Clang takes an
hour or so.  So while I like to build things from source code, I certainly
do not like to *rebuild* them over and over again for gratuitous reasons.

Tell me, why on earth shall i bump revision for a typo fix in COMMENT or
pkg-message, www, maintainer change?  Why do I have to waste time and CPU
cycles for rebuilding my otherwise perfectly fine packages?

There should be a saner way to figure out those upgrade chains.  If even
a trivial change requires revbump to allow pkg to work correctly, then it
must be doing it wrong, sorry.

./danfe



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