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Date:	Tue, 06 Apr 2010 23:31:23 +0200
From:	Nicolas <cuicui DOT oizo AT free DOT fr>
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Subject:	Re: Cygwin 1.7 deployment : disabling MD5 check?
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Dave Korn a écrit :

>> I'm on the edge of massively deploying Cygwin 1.7 from Cygwin 1.5
>> (+400 workstations), and I'm concerned about the time setup.exe
>> takes to verify MD5 packages signature.
>> 
>> When the repository is a remote SaMBa share, it looks that
>> setup.exe download all packages one time to check the signature and
>> another time to install the package.
>> 
>> Is there a possibly to disable this check? As a workaround, I can 
>> silently synchronize the repository on the local drive and
>> launching the setup from there, but it's more complicated that
>> using a single repository on the network.
> 
> There's no command-line option for it - yet.  (And I'm not really
> sure if there should be in general, either.  I'm already
> uncomfortable about the mere existence of the -X option, but I had to
> be practical about it.)
> 
> For situations like this, I'd recommend building and distributing
> internally a custom version of setup.exe anyway, so that you can edit
> IDS_MIRROR_LST and point it to your own internal mirror with its own
> mirrors.lst with just a single entry pointing straight back at
> itself, and avoid any confused users trying to install from an
> external mirror by accident.
> 
> So if you're happy with hacking the code about, just delete all the
> contents of the md5_one() function at the end of install.cc.  Or you
> could try the attached patch if you want a command-line option for
> it.  Builds OK but not tested yet.

I finally didn't change the setup.exe and I just rsynced the content of
the repository (which is about 75MB) before upgrading from the local
hard drive and it's way faster than installing directly from a network
share.

No problem to upgrade from 1.5.x to 1.7.x hundreds of installations of
Cygwin : no script breaker, no weird workaround (besides the slow MD5
verification but it's not specific to the version change), I just had to
properly set LANG and CYGWIN environment variables and that was it. Great.

Nicolas

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