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Message-ID: <3CE48EC3.E981F981@bnl.gov>
Date: Fri, 17 May 2002 01:01:55 -0400
From: John Haggerty <haggerty AT bnl DOT gov>
Organization: Brookhaven National Laboratory
MIME-Version: 1.0
To: Charles Wilson <cwilson AT ece DOT gatech DOT edu>
CC: cygwin AT cygwin DOT com
Subject: Re: setup.exe 2.218.2.8/9 broken
References: <3CE46BA4 DOT B9D34815 AT bnl DOT gov> <3CE47E5D DOT 4070306 AT ece DOT gatech DOT edu>
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Thanks for the explanation; I won't send my laptop back yet, although
I'm still having problems with "Download Incomplete Retry?" with
2.218.2.9, but by now, I may have screwed up something else (like maybe
HOME has gotten undefined, or such) since I have been installed and
uninstalled maybe 25 times.  I'd send the log file, but I have to get
ssh working first... it's not very illuminating for me.

I have been doing an "All Install," perhaps that still breaks the setup?

Charles Wilson wrote:
> 
> John Haggerty wrote:
> 
> >
> > If you're going to work on this, could you leave a working version in
> > place while you do so, and try it before posting it?  Thanks.
> >
> 
> Long story:
> 
> (1)
> In order to allow HEAD testing to go forward with md5sums, there was a
> minor change to the 'stable release' of setup.exe (and to the setup.ini
> format and to the upset script that generates setup.ini) to
>    a) put md5sums for each tarball into setup.ini
>    b) make the current setup.exe not barf when it saw them
> 
> This was a simple change, and was uploaded with little testing or
> fanfare.  BUT, since setup.ini's format changed, it broke all older
> setup.exe's.  This forced everybody to use the most recent 'stable
> release' of setup.exe; many people had been 'hanging back' with old
> obsolete versions.  Perhaps this was impolite of us (and it wasn't
> intended as a "we're gonna force everyone to always ride the bleeding
> edge" thing) -- but it ended up having exactly that effect.
> 
> As it happened, the 'most recent stable release' of setup.exe (non-HEAD)
> was teetering on the edge of a number of bugs...and the wider (forced)
> testing made those bugs visible.
> 
> (2) bug #1: we ran out of parser stack space when all the new XFree86
> packages were added to the distribution.  This was the source of most of
> the problems over the last week.  Too many packages in setup.ini + not
> enough stack space + RHS recursion(?) == the lex setup.ini parser barfed.
> 
> (3) bug #2: minor issues with parsing "buried" setup.ini files -- that
> belong to things NOT cygwin-setup.exe-related.  This happens only when
> someone says "My local setup directory is HERE" when HERE has
> subdirectories that don't belong to cygwin-setup.  (That's bad, don't do
> that: setup's 'local directory' is his own personal playground and he
> doesn't play well with others)
>    This is what happens when user-error meets bad filename parsing...and
> since the userbase of the 'most recent stable release' of setup.exe
> expanded drastically overnight, we got hit with lots of reports about
> this problem.
> 
> Normally, it is Robert and Chris's policy that unstable development of
> setup.exe happens on the HEAD branch (currently 2.A, A > 218).  Bugfixes
> for the officially released setup.exe happens on a side branch (in this
> case, 2.218.2.X).  Unfortunately, a confluence of events, plus an
> accomodation for HEAD's setup.ini format change, led to serious
> instability in the "stable release" of setup.exe for a while.
> 
> Hopefully things are better now...just think of setup-2.218.2.X as linux
> kernel 2.4.X, where X < 9...
> 
> --Chuck
> 
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-- 
John Haggerty
internet: haggerty AT bnl DOT gov
voice/fax: 631 344 2286/4592
http://www.phenix.bnl.gov/~haggerty

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