Sorry, I didn't mean to give the impression of shooting the messenger. I just want to make sure that WiX doesn't turn "won't guarantee it" into "guarantee it won't".
> -----Original Message----- > From: Bryan Reich [mailto:bryan.re...@microsoft.com] > Sent: Monday, February 15, 2010 3:41 PM > To: General discussion for Windows Installer XML toolset. > Subject: Re: [WiX-users] WiXNetFxExtension conditions > > Don't shoot the messanger John. I'm just passing along what I know > about the current situation. Also note that with the 4.0 FW, the CLR > changed the way is registers itself and where you have to look in the > registry to determine the current version, which is why the preexisting > detection logic would now fail. Assemblies are not FW agnostic, so they > won't "just load" into whatever CLR you tell them to. They might, but > the CLR has basically said they won't guarantee it. That doesn't mean > they won't try to maintain compat whenever possible, but there is a > disconnect between the 2.0 runtime and the 4.0 runtime with regards to > how much compat they are guranteeing. > -- > Bryan > > > ________________________________________ > From: John Vottero [jvott...@mvpsi.com] > Sent: Monday, February 15, 2010 11:49 AM > To: General discussion for Windows Installer XML toolset. > Subject: Re: [WiX-users] WiXNetFxExtension conditions > > > > > There is no guarantee that your product would work just fine with CLR > > 4.0 just because it works with CLR 2.0 (Framework 3.5). > > The WiX version test is a guarantee that it WON'T work because it will > refuse to install. > > We work very hard to make sure that our software is "upwardly > compatible" and the .NET Framework > people do the same. All that hard work is negated if the installer has > a pedantic version test. > > The test for a version of the Framework must (optionally) be "Vx.x or > any version that claims to support Vx.x". > > We write "enterprise grade" software. Enterprises don't want to > upgrade without a good reason. Ten years from now, when a customer > calls us up to ask if they can install a ten year old release on > Windows 2020, I want to say yes. I don't want to explain that it won't > work because the installer will refuse to install. > > > > > For CLR 4.0 the CLR has moved into a SxS model whereby 4.0 can be > > loaded in-proc SxS 2.0 runtime, and the 5.0 runtime will be loaded > into > > process alongside the 4.0 runtime, etc. Therefore, they are moving > away > > from a model where CLR 4.0 assumes it can run CLR 2.0 runtime > solutions > > with compatibility. There is extra work you will have to do with > > manifests to allow that scenario to work, and you will have to update > > that manifest for each new FW released. Your setup would also have to > > change to take this into account. > > The SxS model only works for applications. Libraries are still loaded > into whatever version is loading them. I think you can also create a > manifest that says "run on whatever is installed" (I haven't tried > that). > > > > > So actually it's a good thing that the 3.5 detection logic doesn't > > assume 4.0 matches because if it did you may find your solution > > installed onto a platform that is not back compat with your solution. > > No, it's actually a bad thing because it forces my software to break > for no reason. Give me a chance to install so I can see if it works. > > John Vottero > > > ----------------------------------------------------------------------- > ------- > SOLARIS 10 is the OS for Data Centers - provides features such as > DTrace, > Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW > http://p.sf.net/sfu/solaris-dev2dev > _______________________________________________ > WiX-users mailing list > WiX-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wix-users > > ----------------------------------------------------------------------- > ------- > SOLARIS 10 is the OS for Data Centers - provides features such as > DTrace, > Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW > http://p.sf.net/sfu/solaris-dev2dev > _______________________________________________ > WiX-users mailing list > WiX-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wix-users ------------------------------------------------------------------------------ SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
