Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sources.redhat.com/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
X-Authentication-Warning:	slinky.cs.nyu.edu: pechtcha owned process doing -bs
Date:	Tue, 16 Sep 2003 18:05:07 -0400 (EDT)
From:	Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To:	cygwin AT cygwin DOT com
To:	Rolf Campbell <Endlisnis AT mailc DOT net>
cc:	cygwin AT cygwin DOT com
Subject:	Re: Setup installation order?
In-Reply-To:	<bk7uuv$of3$1@sea.gmane.org>
Message-ID:	<Pine.GSO.4.56.0309161804460.12411@slinky.cs.nyu.edu>
References:	<20030916174957 DOT 2533 DOT qmail AT web21405 DOT mail DOT yahoo DOT com>
	<Pine DOT GSO DOT 4 DOT 56 DOT 0309161356460 DOT 12411 AT slinky DOT cs DOT nyu DOT edu> <bk7uuv$of3$1 AT sea DOT gmane DOT org>
Importance:	Normal
MIME-Version:	1.0

On Tue, 16 Sep 2003, Rolf Campbell wrote:

> Igor Pechtchanski wrote:
>
> > On Tue, 16 Sep 2003, Rick Rankin wrote:
> >>I ran into a situation I hadn't seen before a few days ago when I used
> >>setup to update my Cygwin installation from 1.5.3 to 1.5.4. What
> >>happened was that there were several packages, in addition to
> >>cygwin-1.5.4, that had updates available. Setup downloaded the updates,
> >>then uninstalled the old packages, including cygwin-1.5.3. When it went
> >>to install the updates, cygwin-1.5.4 was *not* the first package that
> >>got installed, so any postinstallion scripts failed with a dialog box
> >>from the O/S saying that "Windows cannot find cygwin1.dll in <path
> >>list>" until after cygwin itself was updated. After setup installed the
> >>cygwin package, the rest of the postinstall scripts ran fine.
> >>
> >>Is the cygwin package given any special consideration during the install
> >>process (e.g., last to be uninstalled, first to be (re)installed), or is
> >>this something that's expected to be handled by the dependency list?
> >>I've been perusing the setup sources, but I haven't quite figured out
> >>the dependency processing, yet. So far, I haven't found anything related
> >>via Google searches, either.
> >>
> >>--Rick
> >
> >
> > The setup program simply performs a topological sort of the package
> > dependence graph, and then traverses the packages in that order.  Of
> > course, since the graph is cyclic, topological order is not unique.  In
> > any case, the postinstall scripts should run after *all* the packages are
> > unpacked, so you shouldn't be missing cygwin1.dll on postinstall.
> >
> > However, preremove scripts are run just before the corresponding package
> > is removed (in alphabetical order, IIRC).  This presents a problem, but
> > noone so far has considered it a large enough problem to invest the effort
> > in a fix.  It's likely that you saw this particular problem in your
> > upgrade.  <http://cygwin.com/acronyms/#PTC>.
> >       Igor
>
> Wouldn't it make sence to call each preremove script before any packages
> are actually removed?

It would make sense.  It's currently not done that way.  PTC.
	Igor
-- 
				http://cs.nyu.edu/~pechtcha/
      |\      _,,,---,,_		pechtcha AT cs DOT nyu DOT edu
ZZZzz /,`.-'`'    -.  ;-;;,_		igor AT watson DOT ibm DOT com
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

"I have since come to realize that being between your mentor and his route
to the bathroom is a major career booster."  -- Patrick Naughton

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -