[IronPython] Two engines and clr.AddReference don't work together.

[Michael Foord]

Dino Viehland wrote:
> You're right that it worked in 1.0 - but of course in 1.0 we would also end up with an arbitrary ordering between engines.  For example you could have:
>
> Engine 1:
> 	Sys.path = C:\
> 		Contains "Foo.dll"
>
> Engine 2:
> 	Sys.Path = D:\
> 		Contains "Foo.dll"
>
> Which Foo.dll gets loaded? :)  Unfortunately we don't necessarily know what engine is actually making the request.  We can certainly go back to the 1.0 behavior in the mean time but I believe this will be truly fixed when we get better control over this in some future version of the CLR.
>   

Unfortunately the current behaviour breaks certain Resolver One 
functionality. With IronPython 1 users could put assemblies their 
spreadsheet systems depended on in the same directory as the spreadsheet 
and it 'just worked', which isn't the case with the IronPython 2 port.

Even if it isn't always guaranteed to be correct, the old behaviour was 
much better for us. :-)

Thanks

Michael
> -----Original Message-----
> From: users-bounces at lists.ironpython.com [mailto:users-bounces at lists.ironpython.com] On Behalf Of Tom Wright
> Sent: Friday, January 30, 2009 10:34 AM
> To: Discussion of IronPython
> Subject: [IronPython] Two engines and clr.AddReference don't work together.
>
> Hi,
>
> Having two engines in the same AppDomain causes interesting behaviour
> when trying trying to add references.
>
> Only the sys.path of the first engine that was created seems to be taken
> into account when calling clr.AddReference, the second sys.path is ignored.
>
> See
> http://www.codeplex.com/IronPython/WorkItem/View.aspx?WorkItemId=20921
> for more details and a repro.
>
> Tom Wright
> Resolver Systems Ltd.
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