If you want to make your Visual Studio 2010 extensions work in Visual Studio 2011 Developer Preview, there is a little hack that you can do.
NOTE: Since this is a hack, there is NO guarantee that the extension will work properly. But it might be worth giving a shot if, like me, the only thing stopping you from using VS 2011 is a few extensions that you just cannot live without :)
Also note that this only applies to vsix extensions.
1. Download the vsix file
To do this, go to the Visual Studio Gallery and search for your extension of choice.
Once you find you extension, download it to your desktop (or wherever)
(yes, that is one extension that I just cannot live without, it’s fantastic! Get it here)
2. Rename the file to zip
Once the file is downloaded, simply append .zip to the file name.
3.Edit the manifest
Next, in the expanded folder, edit the file extension.manifest using notepad, wordpad or whatever (I use Notepad++).
Look for the text ‘
<VisualStudio Version‘, and change the value to read
4. Compress the folder content
Now, compress the folder content back into a zip file, using whatever tool you want.
In Windows, you can select all the content in the folder (CTRL+A), right-click, and select ‘send to’ and ‘compressed (zipped) folder’
Once compressed, rename the file back to .vsix
Now all you need to do to install it is to Double-Click it.
Good luck :) It might not work, or it might partially work… but this system should allow you to install it.
Hope it helps :) If anyone has any great extension suggestions, please let me know.