I agree with that last sentence. Fusion was a good idea, poorly executed.

On Thu, Jan 17, 2013 at 2:26 AM, John Ludlow <[email protected]>wrote:

> On 16 January 2013 09:44, Bruce Cran <[email protected]> wrote:
> > On 16/01/2013 09:26, Rob Hamflett wrote:
> >> Doesn't this just bring back DLL Hell?  It seems that we have to
> >> completely abandon using merge modules for runtime deployment.  How is a
> >> user performing a command line installation or repair supposed to know
> >> whether or not it's safe to use the 'a' option for file replacement?
> >> They probably don't know (and have no easy way to find out) whether or
> >> not the installer contains the runtime.  It seems like the only safe
> >> option is to copy the runtime DLLs into your application's folder.  Sure
> >> you could use the redistributable exe and then link to the system ones,
> >> but given that these could be accidentally downgraded, that's not really
> >> an option.  Deploying the DLLs locally doesn't get you any of the
> >> benefits when the shared DLLs are updated, but at least they're less
> >> likely to be downgraded without your knowledge.
> >
> > Yes, it brings back DLL hell - but isn't the answer not to use 'a' for
> > exactly this reason?
> >
>
> In theory the issue would be *other* installations being badly behaved
> and breaking our (well-behaved) software, and when later versions are
> *not* compatible with older versions.
>
> WinSxS was a good idea poorly implemented, and in particular poorly
> implemented in MSI (but then the GAC has some of the same problems).
>
> > --
> > Bruce Cran
> >
> >
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