Shared files referenced by multiple projects break KPM Pack

[lukewaters]

In the entity framework project there are multiple projects that reference shared assemblies. When the entityframework project is directly referenced by an external application, and then the application is attempted to be packed using kpm pack, KPM throws an error complaining that there is a file that already exists and therefore does not finish packing.

To reproduce this issue checkout the EntityFramework source code and navigate to EntityFramework\test\Performance\EntityFramework.Performance.DbContext.Tests

Execute the following two commands, the KPM pack command will fail:

PS> mkdir ..\..\EntityFramework.Performance.DbContext.Tests.desktop
PS> kpm pack -o ..\..\EntityFramework.Performance.DbContext.Tests.desktop --runtime KRE-CLR-x86.1.0.0-beta1-10491 --configuration release > ..\..\EntityFramework.Performance.DbContext.Tests.desktop\build.log

[ChengTian]

@lukewaters , thank you for reporting this bug. I can reproduce it with your steps. @davidfowl , this bug is blocking EF team, please assign it to me if you think it's Ok.

[lukewaters]

+1 for getting this fixed in an expedited fashion as it is a blocking issue