Hi Christopher,

well, I have seen this "perfectly valid and correct scenario" with Microsoft
Project Server 2007. The server assemblies have the assembly version
"12.0.0.0" in both retail and SP1. Only the file versions are different.

So what happens in real life? Some dev has accidentally overwritten the SP1
version of some shared assembly by the retail version. The result was no
error message and no warning. A few hours later the dev server stopped
working and no one knows why. The problem took us additional two hours to
diagnose and fix.

The problem with that approach is simply this: two assemblies that have the
same strong name should be the same. That is what tools expect and people
assume. If this is not true you are asking for trouble.

You said it would not be possible to ship service packs without the ability
to keep the assembly version stable. That is not correct. You can ship
policy files as well (called "Publisher Policy" or "Redirecting Assembly
Versions", see http://msdn.microsoft.com/en-us/library/7wd6ex19.aspx). This
way you can replace the old assembly by a new one that has a different
assembly version (e.g. "12.1.0.0") and specify that all applications will
get that new version although they were compiled against version "12.0.0.0".

IIRC, that is exactly how the .NET Framework team does handle service packs.

Kind Regards,
Immo Landwerth

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Christopher
Painter
Sent: Sonntag, 6. Juli 2008 00:37
To: General discussion for Windows Installer XML toolset.
Subject: Re: [WiX-users] Assembly file versions in wixlibs

There are perfectly valid and correct scenarios where one would need to
update the AssemblyFileVersion but not the AssemblyVersion.  It would be
pretty hard to deploy .NET framework service packs ( or any other strong
named SDK runtime ) without this ability.

Unfortunatly I've also seen developers abuse this story during development
simply because they didn't want to have to rebuild certain components.
Between that and trying to do multiple instance installs with components in
the GAC, it would get ugly.   So in short I'd reccomend always changing
AssemblyVersion/AssemblyFileVerson during the development cycle and only
change AssemblyFileVersion on a case by case basis.

Christopher Painter, Author of Deployment Engineering Blog
Have a hot tip, know a secret or read a really good thread that deserves
attention? E-Mail Me


--- On Sat, 7/5/08, Rob Mensching <[EMAIL PROTECTED]> wrote:

> From: Rob Mensching <[EMAIL PROTECTED]>
> Subject: Re: [WiX-users] Assembly file versions in wixlibs
> To: "General discussion for Windows Installer XML toolset."
<wix-users@lists.sourceforge.net>
> Date: Saturday, July 5, 2008, 5:05 PM
> Using "-fv" is not the "correct way" to
> install files into the GAC.  The "correct way" is
> to update the Assembly version not the assembly file
> version.  One more legacies of Fusion and its, IMHO,
> under-informed design choices.
> 
> You might try and see if a binary .wixlib (pass
> "-bf" switch) gets you what you want.
> 
> If that doesn't work, you can author the
> MsiAssemblyName table using AssemblyName elements.
> 
> 
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf
> Of Neil Sleightholm
> Sent: Friday, July 04, 2008 11:19
> To: General discussion for Windows Installer XML toolset.
> Subject: [WiX-users] Assembly file versions in wixlibs
> 
> I am creating a wixlib that contains some components that
> go in the GAC,
> because the assembly version stays the same but the file
> version changes
> I need to use the light option "-fv" to get them
> to install. Is there
> any way to embed the assembly file versions in the wixlib
> so that I
> don't have to rely on the consumer of the wixlib
> setting the "-fv"
> option?
> 
> 
> 
> Neil
> 
> 
> 
> P.S. Personally I think "-fv" should be on by
> default, it is too
> confusing to explain to someone why an assembly isn't
> being overritten
> in the GAC and I can't see any penalty for using it.
> 
> 
> 
> Neil Sleightholm
> X2 Systems Limited
> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
> 
> 
> 
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